- Add braintrust_mock_client.py with mock HTTP client for Braintrust integration testing
- Integrate mock client into BraintrustLogger with mock mode detection
- Refactor Helicone mock client to fully utilize factory's HTTPHandler.post patching
- Extend mock_client_factory to support patching HTTPHandler.post for sync calls
- Enable endpoint-specific mock responses for Braintrust (/project vs /project_logs)
- All mock clients now properly handle both async (AsyncHTTPHandler) and sync (HTTPHandler) calls
- Created helicone_mock_client.py using factory pattern (similar to GCS)
- Integrated mock mode detection and initialization in HeliconeLogger
- Mock client patches HTTPHandler.post to intercept Helicone API calls
- Uses factory pattern for should_use_mock and MockResponse utilities
- Custom HTTPHandler.post patching required since HTTPHandler uses self.client.send()
- Create mock_client_factory.py to centralize common mock HTTP client logic
- Refactor GCS, Langfuse, LangSmith, and Datadog mock clients to use factory
- Improve GET/DELETE mock accuracy for GCS (return valid StandardLoggingPayload)
- Fix DELETE mock to return empty body (204 No Content) instead of JSON
- Reduce code duplication across integration mock clients
- Create datadog_mock_client.py following GCS, Langfuse, and LangSmith patterns
- Add mock mode detection via DATADOG_MOCK environment variable
- Intercept Datadog API calls via AsyncHTTPHandler.post and httpx.Client.post patching
- Add verbose logging throughout mock implementation
- Update DataDogLogger and DataDogLLMObsLogger to initialize mock client when mock mode enabled
- Supports both async and sync logging paths
- Supports configurable mock latency via DATADOG_MOCK_LATENCY_MS
Google announced that Gemini 2.0 Flash and Flash Lite models will be discontinued on March 31, 2026. Updated deprecation_date field for all affected model variants across different providers (vertex_ai, gemini, deepinfra, openrouter, vercel_ai_gateway).
Models updated:
- gemini-2.0-flash (added deprecation date)
- gemini-2.0-flash-001 (updated from 2026-02-05)
- gemini-2.0-flash-lite (added deprecation date)
- gemini-2.0-flash-lite-001 (updated from 2026-02-25)
All variants now correctly reflect the March 31, 2026 shutdown date.
- Add @lru_cache decorator to get_model_info() and _cached_get_model_info_helper()
- Update _invalidate_model_cost_lowercase_map() to clear these caches when model_cost changes
- Update test to call cache invalidation after modifying litellm.model_cost
Reduces get_model_cost_information from 46% to <1% of request handling time.
* perf: Optimize use_custom_pricing_for_model with set intersection
Cache CustomPricingLiteLLMParams.model_fields.keys() as a module-level
frozenset and use set intersection to reduce loop iterations from 882k
to 90k (only iterating over keys that exist in both sets).
Performance improvement: 84% faster (6.3x speedup)
- Before: 1.17s total, 65µs per call
- After: 0.19s total, 10µs per call
* Use .get() for defensive dictionary access
* perf: Optimize strip_trailing_slash with O(1) index check
Replace rstrip("/") with direct index check for O(1) performance
instead of O(n) string scanning.
Results:
- strip_trailing_slash: 311ms → 13ms (96% faster)
- get_standard_logging_object_payload: 6.11s → 5.80s (5% faster)
* Handle multiple trailing slashes in strip_trailing_slash
Use rstrip for correctness when URL ends with "//" or more,
otherwise use O(1) index check for single trailing slash.
