docs: v1.81.14-stable release notes (#21839)

* docs(release-notes): add v1.81.14-stable release notes * fix(docs): fix MDX compilation errors in auto_routing.md * docs(release-notes): polish v1.81.14 - narrative paragraph, consolidated guardrail templates, merged competitor bullet
2026-09-08 22:21:35 +00:00 · 2026-02-21 14:50:50 -08:00 · 2026-02-21 14:50:50 -08:00 · 8c7f667df2
commit 8c7f667df2
parent 698c46830b
2 changed files with 449 additions and 2 deletions
--- a/docs/my-website/docs/proxy/auto_routing.md
+++ b/docs/my-website/docs/proxy/auto_routing.md
@ -230,7 +230,7 @@ The Complexity Router provides an alternative to semantic routing that uses **ru
 | Feature | Semantic Auto Router | Complexity Router |
 |---------|---------------------|-------------------|
 | Classification | Embedding-based matching | Rule-based scoring |
-| Latency | ~100-500ms (embedding API) | <1ms |
+| Latency | ~100-500ms (embedding API) | &lt;1ms |
 | API Calls | Requires embedding model | None |
 | Training | Requires utterance examples | Works out of the box |
 | Best For | Intent-based routing | Cost optimization |
@ -395,7 +395,7 @@ The router scores each request across 7 dimensions:

 | Dimension | What It Detects | Effect |
 |-----------|-----------------|--------|
-| Token Count | Short (<15) or long (>400) prompts | Short = simple, long = complex |
+| Token Count | Short (&lt;15) or long (&gt;400) prompts | Short = simple, long = complex |
 | Code Presence | "function", "class", "api", "database", etc. | Increases complexity |
 | Reasoning Markers | "step by step", "think through", "analyze" | Triggers REASONING tier |
 | Technical Terms | "architecture", "distributed", "encryption" | Increases complexity |
--- a/docs/my-website/release_notes/v1.81.14.md
+++ b/docs/my-website/release_notes/v1.81.14.md
@ -0,0 +1,447 @@
+---
+title: "v1.81.14-stable - Claude Sonnet 4.6, Guardrail Garden & Major Performance Improvements"
+slug: "v1-81-14"
+date: 2026-02-21T00:00:00
+authors:
+  - name: Krrish Dholakia
+    title: CEO, LiteLLM
+    url: https://www.linkedin.com/in/krish-d/
+    image_url: https://pbs.twimg.com/profile_images/1298587542745358340/DZv3Oj-h_400x400.jpg
+  - name: Ishaan Jaff
+    title: CTO, LiteLLM
+    url: https://www.linkedin.com/in/reffajnaahsi/
+    image_url: https://pbs.twimg.com/profile_images/1613813310264340481/lz54oEiB_400x400.jpg
+hide_table_of_contents: false
+---
+
+## Deploy this version
+
+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+import Image from '@theme/IdealImage';
+
+<Tabs>
+<TabItem value="docker" label="Docker">
+
+``` showLineNumbers title="docker run litellm"
+docker run \
+-e STORE_MODEL_IN_DB=True \
+-p 4000:4000 \
+ghcr.io/berriai/litellm:main-v1.81.14-stable
+```
+
+</TabItem>
+<TabItem value="pip" label="Pip">
+
+``` showLineNumbers title="pip install litellm"
+pip install litellm==1.81.14
+```
+
+</TabItem>
+</Tabs>
+
+## Key Highlights
+
+- **Use Claude Sonnet 4.6 on day 0** — [reasoning, computer use, prompt caching, and 200K context, working across Anthropic and Vertex AI from the moment it launched](../../docs/providers/anthropic)
+- **Deploy guardrails without writing code** — [Guardrail Garden lets you browse a marketplace of pre-built policies (competitor blockers, GDPR PII, EU AI Act, prompt injection) and deploy in one click](../../docs/proxy/guardrails/policy_templates)
+- **Test guardrail policies before shipping** — [upload a CSV dataset to the compliance playground and validate policies against real traffic; get AI-generated policy suggestions with latency overhead estimates](../../docs/proxy/guardrails/policy_templates)
+- **Turn any OpenAPI spec into an MCP server** — [paste a spec and get a working MCP server instantly, via API or UI](../../docs/mcp)
+- **Call any prompt management system from a single API** — [the new Prompt Management API works with Langfuse, LangSmith, and others without requiring per-integration code](../../docs/proxy/prompt_management)
+- **Major performance batch** — 20+ targeted optimizations across router algorithms, logging overhead, cost calculator, and connection management — meaningfully lower latency and CPU overhead on every request
+
+---
+
+This release includes the largest single batch of performance work since v1.74. The most impactful change moves async/sync callback sorting from per-request to registration time (~30% speedup for callback-heavy deployments). On top of that: Pydantic round-trips eliminated from the logging hot path, OpenAI client init params pre-computed once at startup, quadratic deployment scan removed from usage-based routing, and several O(n²) → O(1) fixes in the router's team filter and model list lookups. Combined, these changes add up for high-throughput deployments that were hitting CPU ceilings.
+
+---
+
+## New Providers and Endpoints
+
+### New Providers (1 new provider)
+
+| Provider | Supported LiteLLM Endpoints | Description |
+| -------- | --------------------------- | ----------- |
+| [IBM watsonx.ai](../../docs/providers/watsonx) | `/rerank` | Rerank support for IBM watsonx.ai models |
+
+### New LLM API Endpoints (1 new endpoint)
+
+| Endpoint | Method | Description | Documentation |
+| -------- | ------ | ----------- | ------------- |
+| `/v1/evals` | POST/GET | OpenAI-compatible Evals API for model evaluation | [Docs](../../docs/evals_api) |
+
+---
+
+## New Models / Updated Models
+
+#### New Model Support (13 new models)
+
+| Provider | Model | Context Window | Input ($/1M tokens) | Output ($/1M tokens) | Features |
+| -------- | ----- | -------------- | ------------------- | -------------------- | -------- |
+| Anthropic | `claude-sonnet-4-6` | 200K | $3.00 | $15.00 | Reasoning, computer use, prompt caching, vision, PDF |
+| Vertex AI | `vertex_ai/claude-opus-4-6@default` | 1M | $5.00 | $25.00 | Reasoning, computer use, prompt caching |
+| Google Gemini | `gemini/gemini-3.1-pro-preview` | 1M | $2.00 | $12.00 | Audio, video, images, PDF |
+| Google Gemini | `gemini/gemini-3.1-pro-preview-customtools` | 1M | $2.00 | $12.00 | Custom tools |
+| GitHub Copilot | `github_copilot/gpt-5.3-codex` | 128K | - | - | Responses API, function calling, vision |
+| GitHub Copilot | `github_copilot/claude-opus-4.6-fast` | 128K | - | - | Chat completions, function calling, vision |
+| Mistral | `mistral/devstral-small-latest` | 256K | $0.10 | $0.30 | Function calling, response schema |
+| Mistral | `mistral/devstral-latest` | 256K | $0.40 | $2.00 | Function calling, response schema |
+| Mistral | `mistral/devstral-medium-latest` | 256K | $0.40 | $2.00 | Function calling, response schema |
+| OpenRouter | `openrouter/minimax/minimax-m2.5` | 196K | $0.30 | $1.10 | Function calling, reasoning, prompt caching |
+| Fireworks AI | `fireworks_ai/accounts/fireworks/models/glm-4p7` | - | - | - | Chat completions |
+| Fireworks AI | `fireworks_ai/accounts/fireworks/models/minimax-m2p1` | - | - | - | Chat completions |
+| Fireworks AI | `fireworks_ai/accounts/fireworks/models/kimi-k2p5` | - | - | - | Chat completions |
+
+#### Features
+
+- **[Anthropic](../../docs/providers/anthropic)**
+    - Day 0 support for Claude Sonnet 4.6 with reasoning, computer use, and 200K context - [PR #21401](https://github.com/BerriAI/litellm/pull/21401)
+    - Add Claude Sonnet 4.6 pricing - [PR #21395](https://github.com/BerriAI/litellm/pull/21395)
+    - Add day 0 feature support for Claude Sonnet 4.6 (streaming, function calling, vision) - [PR #21448](https://github.com/BerriAI/litellm/pull/21448)
+    - Add `reasoning` effort and extended thinking support for Sonnet 4.6 - [PR #21598](https://github.com/BerriAI/litellm/pull/21598)
+    - Fix empty system messages in `translate_system_message` - [PR #21630](https://github.com/BerriAI/litellm/pull/21630)
+    - Sanitize Anthropic messages for multi-turn compatibility - [PR #21464](https://github.com/BerriAI/litellm/pull/21464)
+    - Map `websearch` tool from `/v1/messages` to `/chat/completions` - [PR #21465](https://github.com/BerriAI/litellm/pull/21465)
+    - Forward `reasoning` field as `reasoning_content` in delta streaming - [PR #21468](https://github.com/BerriAI/litellm/pull/21468)
+    - Add server-side compaction translation from OpenAI to Anthropic format - [PR #21555](https://github.com/BerriAI/litellm/pull/21555)
+
+- **[AWS Bedrock](../../docs/providers/bedrock)**
+    - Native structured outputs API support (`outputConfig.textFormat`) - [PR #21222](https://github.com/BerriAI/litellm/pull/21222)
+    - Support `nova/` and `nova-2/` spec prefixes for custom imported models - [PR #21359](https://github.com/BerriAI/litellm/pull/21359)
+    - Broaden Nova 2 model detection to support all `nova-2-*` variants - [PR #21358](https://github.com/BerriAI/litellm/pull/21358)
+    - Add Accept header for AgentCore MCP server requests - [PR #21551](https://github.com/BerriAI/litellm/pull/21551)
+    - Clamp `thinking.budget_tokens` to minimum 1024 - [PR #21306](https://github.com/BerriAI/litellm/pull/21306)
+    - Fix `parallel_tool_calls` mapping for Bedrock Converse - [PR #21659](https://github.com/BerriAI/litellm/pull/21659)
+
+- **[Google Gemini / Vertex AI](../../docs/providers/gemini)**
+    - Day 0 support for `gemini-3.1-pro-preview` - [PR #21568](https://github.com/BerriAI/litellm/pull/21568)
+    - Fix `_map_reasoning_effort_to_thinking_level` for all Gemini 3 family models - [PR #21654](https://github.com/BerriAI/litellm/pull/21654)
+    - Add reasoning support via config for Gemini models - [PR #21663](https://github.com/BerriAI/litellm/pull/21663)
+
+- **[Databricks](../../docs/providers/databricks)**
+    - Add Databricks to supported providers for response schema - [PR #21368](https://github.com/BerriAI/litellm/pull/21368)
+    - Native Responses API support for Databricks GPT models - [PR #21460](https://github.com/BerriAI/litellm/pull/21460)
+
+- **[GitHub Copilot](../../docs/providers/github_copilot)**
+    - Add `github_copilot/gpt-5.3-codex` and `github_copilot/claude-opus-4.6-fast` models - [PR #21316](https://github.com/BerriAI/litellm/pull/21316)
+    - Fix unsupported params for ChatGPT Codex - [PR #21209](https://github.com/BerriAI/litellm/pull/21209)
+    - Allow GitHub model aliases to reuse upstream model metadata - [PR #21497](https://github.com/BerriAI/litellm/pull/21497)
+
+- **[Mistral](../../docs/providers/mistral)**
+    - Add `devstral-2512` model aliases (`devstral-small-latest`, `devstral-latest`, `devstral-medium-latest`) - [PR #21372](https://github.com/BerriAI/litellm/pull/21372)
+
+- **[IBM watsonx.ai](../../docs/providers/watsonx)**
+    - Add native rerank support - [PR #21303](https://github.com/BerriAI/litellm/pull/21303)
+
+- **[xAI](../../docs/providers/xai)**
+    - Fix usage object in xAI responses - [PR #21559](https://github.com/BerriAI/litellm/pull/21559)
+
+- **[Dashscope](../../docs/providers/dashscope)**
+    - Remove list-to-str transformation that caused incorrect request formatting - [PR #21547](https://github.com/BerriAI/litellm/pull/21547)
+
+- **[hosted_vllm](../../docs/providers/vllm)**
+    - Convert thinking blocks to content blocks for multi-turn conversations - [PR #21557](https://github.com/BerriAI/litellm/pull/21557)
+
+- **[OCI / Oracle](../../docs/providers/oci_cohere)**
+    - Fix Grok output pricing - [PR #21329](https://github.com/BerriAI/litellm/pull/21329)
+
+- **[AU Anthropic](../../docs/providers/anthropic)**
+    - Fix `au.anthropic.claude-opus-4-6-v1` model ID - [PR #20731](https://github.com/BerriAI/litellm/pull/20731)
+
+- **General**
+    - Add routing based on reasoning support — skip deployments that don't support reasoning when `thinking` params are present - [PR #21302](https://github.com/BerriAI/litellm/pull/21302)
+    - Add `stop` as supported param for OpenAI and Azure - [PR #21539](https://github.com/BerriAI/litellm/pull/21539)
+    - Add `store` and other missing params to `OPENAI_CHAT_COMPLETION_PARAMS` - [PR #21195](https://github.com/BerriAI/litellm/pull/21195), [PR #21360](https://github.com/BerriAI/litellm/pull/21360)
+    - Preserve `provider_specific_fields` from proxy responses - [PR #21220](https://github.com/BerriAI/litellm/pull/21220)
+    - Add default usage data configuration - [PR #21550](https://github.com/BerriAI/litellm/pull/21550)
+
+### Bug Fixes
+
+- **[AWS Bedrock](../../docs/providers/bedrock)**
+    - Fix service_tier cost propagation - [PR #21172](https://github.com/BerriAI/litellm/pull/21172)
+    - Fix per-image pricing for multimodal embeddings - [PR #21646](https://github.com/BerriAI/litellm/pull/21646)
+    - Use `batch_` prefix for Vertex AI batch IDs in `encode_file_id_with_model` - [PR #21624](https://github.com/BerriAI/litellm/pull/21624)
+
+- **[Bedrock Converse](../../docs/providers/bedrock)**
+    - Fix Anthropic usage object to match v1/messages spec - [PR #21295](https://github.com/BerriAI/litellm/pull/21295)
+
+- **[Fireworks AI](../../docs/providers/fireworks_ai)**
+    - Add missing model pricing for `glm-4p7`, `minimax-m2p1`, `kimi-k2p5` - [PR #21642](https://github.com/BerriAI/litellm/pull/21642)
+
+- **[Responses API](../../docs/response_api)**
+    - Fix `use None` instead of `Reasoning()` for reasoning parameter - [PR #21103](https://github.com/BerriAI/litellm/pull/21103)
+    - Preserve metadata for custom callbacks on codex/responses path - [PR #21243](https://github.com/BerriAI/litellm/pull/21243)
+
+---
+
+## LLM API Endpoints
+
+#### Features
+
+- **[Responses API](../../docs/response_api)**
+    - Return `finish_reason='tool_calls'` when response contains function_call items - [PR #19745](https://github.com/BerriAI/litellm/pull/19745)
+    - Eliminate per-chunk thread spawning in async streaming path for significantly better throughput - [PR #21709](https://github.com/BerriAI/litellm/pull/21709)
+
+- **[Evals API](../../docs/evals_api)**
+    - Add support for OpenAI Evals API - [PR #21375](https://github.com/BerriAI/litellm/pull/21375)
+
+- **[Batch API](../../docs/batches)**
+    - Add file deletion criteria with batch references - [PR #21456](https://github.com/BerriAI/litellm/pull/21456)
+    - Misc bug fixes for managed batches - [PR #21157](https://github.com/BerriAI/litellm/pull/21157)
+
+- **[Pass-Through Endpoints](../../docs/pass_through/bedrock)**
+    - Add method-based routing for passthrough endpoints - [PR #21543](https://github.com/BerriAI/litellm/pull/21543)
+    - Preserve and forward OAuth Authorization headers through proxy layer - [PR #19912](https://github.com/BerriAI/litellm/pull/19912)
+
+- **[Websearch / Tool Calling](../../docs/completion/input)**
+    - Add DuckDuckGo as a search tool - [PR #21467](https://github.com/BerriAI/litellm/pull/21467)
+    - Fix `pre_call_deployment_hook` not triggering via proxy router for websearch - [PR #21433](https://github.com/BerriAI/litellm/pull/21433)
+
+- **General**
+    - Exclude tool params for models without function calling support - [PR #21244](https://github.com/BerriAI/litellm/pull/21244)
+    - Add `store` param to OpenAI chat completion params - [PR #21195](https://github.com/BerriAI/litellm/pull/21195)
+    - Add reasoning support via config for per-model reasoning configuration - [PR #21663](https://github.com/BerriAI/litellm/pull/21663)
+
+#### Bugs
+
+- **General**
+    - Fix `api_base` resolution error for models with multiple potential endpoints - [PR #21658](https://github.com/BerriAI/litellm/pull/21658)
+    - Fix session grouping broken for dict rows from `query_raw` - [PR #21435](https://github.com/BerriAI/litellm/pull/21435)
+
+---
+
+## Management Endpoints / UI
+
+#### Features
+
+- **Access Groups**
+    - Add Access Group Selector to Create and Edit flow for Keys/Teams - [PR #21234](https://github.com/BerriAI/litellm/pull/21234)
+
+- **Virtual Keys**
+    - Fix virtual key grace period from env/UI - [PR #20321](https://github.com/BerriAI/litellm/pull/20321)
+    - Fix key expiry default duration - [PR #21362](https://github.com/BerriAI/litellm/pull/21362)
+    - Key Last Active Tracking — see when a key was last used - [PR #21545](https://github.com/BerriAI/litellm/pull/21545)
+    - Fix `/v1/models` returning wildcard instead of expanded models for BYOK team keys - [PR #21408](https://github.com/BerriAI/litellm/pull/21408)
+    - Return `failed_tokens` in delete_verification_tokens response - [PR #21609](https://github.com/BerriAI/litellm/pull/21609)
+
+- **Models + Endpoints**
+    - Add Model Settings Modal to Models & Endpoints page - [PR #21516](https://github.com/BerriAI/litellm/pull/21516)
+    - Allow `store_model_in_db` to be set via database (not just config) - [PR #21511](https://github.com/BerriAI/litellm/pull/21511)
+    - Fix `input_cost_per_token` masked/hidden in Model Info UI - [PR #21723](https://github.com/BerriAI/litellm/pull/21723)
+    - Fix credentials for UI-created models in batch file uploads - [PR #21502](https://github.com/BerriAI/litellm/pull/21502)
+    - Resolve credentials for UI-created models - [PR #21502](https://github.com/BerriAI/litellm/pull/21502)
+
+- **Teams**
+    - Allow team members to view entire team usage - [PR #21537](https://github.com/BerriAI/litellm/pull/21537)
+    - Fix service account visibility for team members - [PR #21627](https://github.com/BerriAI/litellm/pull/21627)
+    - Organization Info page: show member email, AntD tabs, reusable MemberTable - [PR #21745](https://github.com/BerriAI/litellm/pull/21745)
+
+- **Usage / Spend Logs**
+    - Allow filtering Usage by User - [PR #21351](https://github.com/BerriAI/litellm/pull/21351)
+    - Inject Credential Name as Tag for Usage Page filtering - [PR #21715](https://github.com/BerriAI/litellm/pull/21715)
+    - Prefix credential tags and update Tag usage banner - [PR #21739](https://github.com/BerriAI/litellm/pull/21739)
+    - Show retry count for requests in Logs view - [PR #21704](https://github.com/BerriAI/litellm/pull/21704)
+    - Fix Aggregated Daily Activity Endpoint performance - [PR #21613](https://github.com/BerriAI/litellm/pull/21613)
+
+- **SSO / Auth**
+    - Fix SSO PKCE support in multi-pod Kubernetes deployments - [PR #20314](https://github.com/BerriAI/litellm/pull/20314)
+    - Preserve SSO role regardless of `role_mappings` config - [PR #21503](https://github.com/BerriAI/litellm/pull/21503)
+
+- **Proxy CLI / Master Key**
+    - Fix master key rotation Prisma validation errors - [PR #21330](https://github.com/BerriAI/litellm/pull/21330)
+    - Handle missing `DATABASE_URL` in `append_query_params` - [PR #21239](https://github.com/BerriAI/litellm/pull/21239)
+
+- **Project Management**
+    - Add Project Management APIs for organizing resources - [PR #21078](https://github.com/BerriAI/litellm/pull/21078)
+
+- **UI Improvements**
+    - Content Filters: help edit/view categories and 1-click add with pagination - [PR #21223](https://github.com/BerriAI/litellm/pull/21223)
+    - Playground: test fallbacks with UI - [PR #21007](https://github.com/BerriAI/litellm/pull/21007)
+    - Add `forward_client_headers_to_llm_api` toggle to general settings - [PR #21776](https://github.com/BerriAI/litellm/pull/21776)
+    - Fix `is_premium()` debug log spam on every request - [PR #20841](https://github.com/BerriAI/litellm/pull/20841)
+
+#### Bugs
+
+- Spend Logs: Fix cost calculation - [PR #21152](https://github.com/BerriAI/litellm/pull/21152)
+- Logs: Fix table not updating and pagination issues - [PR #21708](https://github.com/BerriAI/litellm/pull/21708)
+- Fix `/get_image` ignoring `UI_LOGO_PATH` when `cached_logo.jpg` exists - [PR #21637](https://github.com/BerriAI/litellm/pull/21637)
+- Fix duplicate URL in `tagsSpendLogsCall` query string - [PR #20909](https://github.com/BerriAI/litellm/pull/20909)
+- Preserve `key_alias` and `team_id` metadata in `/user/daily/activity/aggregated` after key deletion or regeneration - [PR #20684](https://github.com/BerriAI/litellm/pull/20684)
+- Uncomment `response_model` in `user_info` endpoint - [PR #17430](https://github.com/BerriAI/litellm/pull/17430)
+- Allow `internal_user_viewer` to access RAG endpoints; restrict ingest to existing vector stores - [PR #21508](https://github.com/BerriAI/litellm/pull/21508)
+- Suppress warning for `litellm-dashboard` team in agent permission handler - [PR #21721](https://github.com/BerriAI/litellm/pull/21721)
+
+---
+
+## AI Integrations
+
+### Logging
+
+- **[DataDog](../../docs/proxy/logging#datadog)**
+    - Add `team` tag to logs, metrics, and cost management - [PR #21449](https://github.com/BerriAI/litellm/pull/21449)
+
+- **[Prometheus](../../docs/proxy/logging#prometheus)**
+    - Fix double-counting of `litellm_proxy_total_requests_metric` - [PR #21159](https://github.com/BerriAI/litellm/pull/21159)
+    - Guard against None metadata in Prometheus metrics - [PR #21489](https://github.com/BerriAI/litellm/pull/21489)
+    - Add ASGI middleware for improved Prometheus metrics collection - [PR #20434](https://github.com/BerriAI/litellm/pull/20434)
+
+- **[Langfuse](../../docs/proxy/logging#langfuse)**
+    - Improve Langfuse test isolation (multiple stability fixes) - [PR #21214](https://github.com/BerriAI/litellm/pull/21214)
+
+- **General**
+    - Fix cost to 0 for cached responses in logging - [PR #21816](https://github.com/BerriAI/litellm/pull/21816)
+    - Improve streaming proxy throughput by fixing middleware and logging bottlenecks - [PR #21501](https://github.com/BerriAI/litellm/pull/21501)
+    - Reduce proxy overhead for large base64 payloads - [PR #21594](https://github.com/BerriAI/litellm/pull/21594)
+    - Close streaming connections to prevent connection pool exhaustion - [PR #21213](https://github.com/BerriAI/litellm/pull/21213)
+
+### Guardrails
+
+- **Guardrail Garden**
+    - Launch Guardrail Garden — a marketplace for pre-built guardrails deployable in one click - [PR #21732](https://github.com/BerriAI/litellm/pull/21732)
+    - Redesign guardrail creation form with vertical stepper UI - [PR #21727](https://github.com/BerriAI/litellm/pull/21727)
+    - Add guardrail jump link in log detail view - [PR #21437](https://github.com/BerriAI/litellm/pull/21437)
+    - Guardrail tracing UI: show policy, detection method, and match details - [PR #21349](https://github.com/BerriAI/litellm/pull/21349)
+
+- **AI Policy Templates**
+    - Seven new ready-to-deploy policy templates ship in this release:
+        - GDPR Art. 32 EU PII Protection - [PR #21340](https://github.com/BerriAI/litellm/pull/21340)
+        - EU AI Act Article 5 (5 sub-guardrails, with French language support) - [PR #21342](https://github.com/BerriAI/litellm/pull/21342), [PR #21453](https://github.com/BerriAI/litellm/pull/21453), [PR #21427](https://github.com/BerriAI/litellm/pull/21427)
+        - Prompt injection detection - [PR #21520](https://github.com/BerriAI/litellm/pull/21520)
+        - Aviation and UAE topic filters with tag-based routing - [PR #21518](https://github.com/BerriAI/litellm/pull/21518)
+        - Airline off-topic restriction - [PR #21607](https://github.com/BerriAI/litellm/pull/21607)
+        - SQL injection - [PR #21806](https://github.com/BerriAI/litellm/pull/21806)
+    - AI-powered policy template suggestions with latency overhead estimates - [PR #21589](https://github.com/BerriAI/litellm/pull/21589), [PR #21608](https://github.com/BerriAI/litellm/pull/21608), [PR #21620](https://github.com/BerriAI/litellm/pull/21620)
+
+- **Compliance Checker**
+    - Add compliance checker endpoints + UI panel - [PR #21432](https://github.com/BerriAI/litellm/pull/21432)
+    - CSV dataset upload to compliance playground for batch testing - [PR #21526](https://github.com/BerriAI/litellm/pull/21526)
+
+- **Built-in Guardrails**
+    - Competitor name blocker: blocks by name, handles streaming, supports name variations, and splits pre/post call - [PR #21719](https://github.com/BerriAI/litellm/pull/21719), [PR #21533](https://github.com/BerriAI/litellm/pull/21533)
+    - Topic blocker with both keyword and embedding-based implementations - [PR #21713](https://github.com/BerriAI/litellm/pull/21713)
+    - Insults content filter - [PR #21729](https://github.com/BerriAI/litellm/pull/21729)
+    - MCP Security guardrail to block unregistered MCP servers - [PR #21429](https://github.com/BerriAI/litellm/pull/21429)
+
+- **[Generic Guardrails](../../docs/proxy/guardrails)**
+    - Add configurable fallback to handle generic guardrail endpoint connection failures - [PR #21245](https://github.com/BerriAI/litellm/pull/21245)
+
+- **[Presidio](../../docs/proxy/guardrails)**
+    - Fix Presidio controls configuration - [PR #21798](https://github.com/BerriAI/litellm/pull/21798)
+
+- **[LakeraAI](../../docs/proxy/guardrails)**
+    - Avoid `KeyError` on missing `LAKERA_API_KEY` during initialization - [PR #21422](https://github.com/BerriAI/litellm/pull/21422)
+
+### Prompt Management
+
+- **Prompt Management API**
+    - New API to interact with prompt management integrations without requiring a PR - [PR #17800](https://github.com/BerriAI/litellm/pull/17800), [PR #17946](https://github.com/BerriAI/litellm/pull/17946)
+    - Fix prompt registry configuration issues - [PR #21402](https://github.com/BerriAI/litellm/pull/21402)
+
+---
+
+## Spend Tracking, Budgets and Rate Limiting
+
+- **Fix Bedrock service_tier cost propagation** — costs from service-tier responses now correctly flow through to spend tracking - [PR #21172](https://github.com/BerriAI/litellm/pull/21172)
+- **Fix cost for cached responses** — cached responses now correctly log $0 cost instead of re-billing - [PR #21816](https://github.com/BerriAI/litellm/pull/21816)
+- **Aggregate daily activity endpoint performance** — faster queries for `/user/daily/activity/aggregated` - [PR #21613](https://github.com/BerriAI/litellm/pull/21613)
+- **Preserve key_alias and team_id metadata** in `/user/daily/activity/aggregated` after key deletion or regeneration - [PR #20684](https://github.com/BerriAI/litellm/pull/20684)
+- **Inject Credential Name as Tag** for granular usage page filtering by credential - [PR #21715](https://github.com/BerriAI/litellm/pull/21715)
+
+---
+
+## MCP Gateway
+
+- **OpenAPI-to-MCP** — Convert any OpenAPI spec to an MCP server via API or UI - [PR #21575](https://github.com/BerriAI/litellm/pull/21575), [PR #21662](https://github.com/BerriAI/litellm/pull/21662)
+- **MCP User Permissions** — Fine-grained permissions for end users on MCP servers - [PR #21462](https://github.com/BerriAI/litellm/pull/21462)
+- **MCP Security Guardrail** — Block calls to unregistered MCP servers - [PR #21429](https://github.com/BerriAI/litellm/pull/21429)
+- **Fix StreamableHTTPSessionManager** — Revert to stateless mode to prevent session state issues - [PR #21323](https://github.com/BerriAI/litellm/pull/21323)
+- **Fix Bedrock AgentCore Accept header** — Add required Accept header for AgentCore MCP server requests - [PR #21551](https://github.com/BerriAI/litellm/pull/21551)
+
+---
+
+## Performance / Loadbalancing / Reliability improvements
+
+**Logging & callback overhead**
+
+- Move async/sync callback separation from per-request to callback registration time — ~30% speedup for callback-heavy deployments - [PR #20354](https://github.com/BerriAI/litellm/pull/20354)
+- Skip Pydantic Usage round-trip in logging payload — reduces serialization overhead per request - [PR #21003](https://github.com/BerriAI/litellm/pull/21003)
+- Skip duplicate `get_standard_logging_object_payload` calls for non-streaming requests - [PR #20440](https://github.com/BerriAI/litellm/pull/20440)
+- Reuse `LiteLLM_Params` object across the request lifecycle - [PR #20593](https://github.com/BerriAI/litellm/pull/20593)
+- Optimize `add_litellm_data_to_request` hot path - [PR #20526](https://github.com/BerriAI/litellm/pull/20526)
+- Optimize `model_dump_with_preserved_fields` - [PR #20882](https://github.com/BerriAI/litellm/pull/20882)
+- Pre-compute OpenAI client init params at module load instead of per-request - [PR #20789](https://github.com/BerriAI/litellm/pull/20789)
+- Reduce proxy overhead for large base64 payloads - [PR #21594](https://github.com/BerriAI/litellm/pull/21594)
+- Improve streaming proxy throughput by fixing middleware and logging bottlenecks - [PR #21501](https://github.com/BerriAI/litellm/pull/21501)
+- Eliminate per-chunk thread spawning in Responses API async streaming - [PR #21709](https://github.com/BerriAI/litellm/pull/21709)
+
+**Cost calculation**
+
+- Optimize `completion_cost()` with early-exit and caching - [PR #20448](https://github.com/BerriAI/litellm/pull/20448)
+- Cost calculator: reduce repeated lookups and dict copies - [PR #20541](https://github.com/BerriAI/litellm/pull/20541)
+
+**Router & load balancing**
+
+- Remove quadratic deployment scan in usage-based routing v2 - [PR #21211](https://github.com/BerriAI/litellm/pull/21211)
+- Avoid O(n²) membership scans in team deployment filter - [PR #21210](https://github.com/BerriAI/litellm/pull/21210)
+- Avoid O(n) alias scan for non-alias `get_model_list` lookups - [PR #21136](https://github.com/BerriAI/litellm/pull/21136)
+- Increase default LRU cache size to reduce multi-model cache thrash - [PR #21139](https://github.com/BerriAI/litellm/pull/21139)
+- Cache `get_model_access_groups()` no-args result on Router - [PR #20374](https://github.com/BerriAI/litellm/pull/20374)
+- Deployment affinity routing callback — route to the same deployment for a session - [PR #19143](https://github.com/BerriAI/litellm/pull/19143)
+- Complexity-based auto routing — new router strategy that routes based on request complexity - [PR #21789](https://github.com/BerriAI/litellm/pull/21789)
+- Session-ID-based routing — use `session_id` for consistent routing within a session - [PR #21763](https://github.com/BerriAI/litellm/pull/21763)
+
+**Connection management & reliability**
+
+- Fix Redis connection pool reliability — prevent connection exhaustion under load - [PR #21717](https://github.com/BerriAI/litellm/pull/21717)
+- Fix Prisma connection self-heal for auth and runtime reconnection (reverted, will be re-introduced with fixes) - [PR #21706](https://github.com/BerriAI/litellm/pull/21706)
+- Make `PodLockManager.release_lock` atomic compare-and-delete - [PR #21226](https://github.com/BerriAI/litellm/pull/21226)
+
+---
+
+## Database Changes
+
+### Schema Updates
+
+| Table | Change Type | Description | PR |
+| ----- | ----------- | ----------- | -- |
+| `LiteLLM_DeletedVerificationToken` | New Column | Added `project_id` column | [PR #21587](https://github.com/BerriAI/litellm/pull/21587) |
+| `LiteLLM_ProjectTable` | New Table | Project management for organizing resources | [PR #21078](https://github.com/BerriAI/litellm/pull/21078) |
+| `LiteLLM_VerificationToken` | New Column | Added `last_active` timestamp for key activity tracking | [PR #21545](https://github.com/BerriAI/litellm/pull/21545) |
+| `LiteLLM_ManagedVectorStoreTable` | Migration | Make vector store migration idempotent | [PR #21325](https://github.com/BerriAI/litellm/pull/21325) |
+
+---
+
+## Documentation Updates
+
+- Add OpenAI Agents SDK with LiteLLM guide - [PR #21311](https://github.com/BerriAI/litellm/pull/21311)
+- Access Groups documentation - [PR #21236](https://github.com/BerriAI/litellm/pull/21236)
+- Anthropic beta headers documentation - [PR #21320](https://github.com/BerriAI/litellm/pull/21320)
+- Latency overhead troubleshooting guide - [PR #21600](https://github.com/BerriAI/litellm/pull/21600), [PR #21603](https://github.com/BerriAI/litellm/pull/21603)
+- Add rollback safety check guide - [PR #21743](https://github.com/BerriAI/litellm/pull/21743)
+- Incident report: vLLM Embeddings broken by encoding_format parameter - [PR #21474](https://github.com/BerriAI/litellm/pull/21474)
+- Incident report: Claude Code beta headers - [PR #21485](https://github.com/BerriAI/litellm/pull/21485)
+- Mark v1.81.12 as stable - [PR #21809](https://github.com/BerriAI/litellm/pull/21809)
+
+---
+
+## New Contributors
+
+* @mjkam made their first contribution in [PR #21306](https://github.com/BerriAI/litellm/pull/21306)
+* @saneroen made their first contribution in [PR #21243](https://github.com/BerriAI/litellm/pull/21243)
+* @vincentkoc made their first contribution in [PR #21239](https://github.com/BerriAI/litellm/pull/21239)
+* @felixti made their first contribution in [PR #19745](https://github.com/BerriAI/litellm/pull/19745)
+* @anttttti made their first contribution in [PR #20731](https://github.com/BerriAI/litellm/pull/20731)
+* @ndgigliotti made their first contribution in [PR #21222](https://github.com/BerriAI/litellm/pull/21222)
+* @iamadamreed made their first contribution in [PR #19912](https://github.com/BerriAI/litellm/pull/19912)
+* @sahukanishka made their first contribution in [PR #21220](https://github.com/BerriAI/litellm/pull/21220)
+* @namabile made their first contribution in [PR #21195](https://github.com/BerriAI/litellm/pull/21195)
+* @stronk7 made their first contribution in [PR #21372](https://github.com/BerriAI/litellm/pull/21372)
+* @ZeroAurora made their first contribution in [PR #21547](https://github.com/BerriAI/litellm/pull/21547)
+* @SolitudePy made their first contribution in [PR #21497](https://github.com/BerriAI/litellm/pull/21497)
+* @SherifWaly made their first contribution in [PR #21557](https://github.com/BerriAI/litellm/pull/21557)
+* @dkindlund made their first contribution in [PR #21633](https://github.com/BerriAI/litellm/pull/21633)
+* @cagojeiger made their first contribution in [PR #21664](https://github.com/BerriAI/litellm/pull/21664)
+
+---
+
+## Full Changelog
+[v1.81.12.rc.1...v1.81.14.rc.1](https://github.com/BerriAI/litellm/compare/v1.81.12.rc.1...v1.81.14.rc.1)