From f5c35034cadfc2ff3853952611a460d3cf5bac34 Mon Sep 17 00:00:00 2001
From: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Date: Sat, 19 Sep 2026 13:17:01 +0000
Subject: [PATCH 1/4] fix(model_prices): add claude-mythos-5 deprecation date
 from Anthropic's model deprecations page

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
---
 litellm/model_prices_and_context_window_backup.json | 1 +
 model_prices_and_context_window.json                | 1 +
 2 files changed, 2 insertions(+)

diff --git a/litellm/model_prices_and_context_window_backup.json b/litellm/model_prices_and_context_window_backup.json
index 32619a86247..49d983f0254 100644
--- a/litellm/model_prices_and_context_window_backup.json
+++ b/litellm/model_prices_and_context_window_backup.json
@@ -60115,6 +60115,7 @@
         "supports_audio_output": true
     },
     "claude-mythos-5": {
+        "deprecation_date": "2027-06-09",
         "cache_creation_input_token_cost": 1.25e-05,
         "cache_creation_input_token_cost_above_1hr": 2e-05,
         "cache_read_input_token_cost": 1e-06,
diff --git a/model_prices_and_context_window.json b/model_prices_and_context_window.json
index 32619a86247..49d983f0254 100644
--- a/model_prices_and_context_window.json
+++ b/model_prices_and_context_window.json
@@ -60115,6 +60115,7 @@
         "supports_audio_output": true
     },
     "claude-mythos-5": {
+        "deprecation_date": "2027-06-09",
         "cache_creation_input_token_cost": 1.25e-05,
         "cache_creation_input_token_cost_above_1hr": 2e-05,
         "cache_read_input_token_cost": 1e-06,

From 60784c9d8ed3db186bc1311f3469c10fa041a5e5 Mon Sep 17 00:00:00 2001
From: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Date: Sat, 19 Sep 2026 13:17:45 +0000
Subject: [PATCH 2/4] fix(model_prices): update azure gpt-4.1-nano retirement
 date to 2027-04-14 per Microsoft schedule

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
---
 litellm/model_prices_and_context_window_backup.json | 10 +++++-----
 model_prices_and_context_window.json                | 10 +++++-----
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/litellm/model_prices_and_context_window_backup.json b/litellm/model_prices_and_context_window_backup.json
index 49d983f0254..5d909128cf7 100644
--- a/litellm/model_prices_and_context_window_backup.json
+++ b/litellm/model_prices_and_context_window_backup.json
@@ -5300,7 +5300,7 @@
         "supports_web_search": false
     },
     "azure/gpt-4.1-nano": {
-        "deprecation_date": "2026-10-14",
+        "deprecation_date": "2027-04-14",
         "cache_read_input_token_cost": 2.5e-08,
         "input_cost_per_token": 1e-07,
         "input_cost_per_token_batches": 5e-08,
@@ -5334,7 +5334,7 @@
         "supports_vision": true
     },
     "azure/gpt-4.1-nano-2025-04-14": {
-        "deprecation_date": "2026-10-14",
+        "deprecation_date": "2027-04-14",
         "cache_read_input_token_cost": 2.5e-08,
         "input_cost_per_token": 1e-07,
         "input_cost_per_token_batches": 5e-08,
@@ -10207,7 +10207,7 @@
         "supports_web_search": false
     },
     "azure/us/gpt-4.1-nano-2025-04-14": {
-        "deprecation_date": "2026-10-14",
+        "deprecation_date": "2027-04-14",
         "cache_read_input_token_cost": 2.8e-08,
         "input_cost_per_token": 1.1e-07,
         "input_cost_per_token_batches": 5.5e-08,
@@ -69115,7 +69115,7 @@
         "source": "https://prices.azure.com/api/retail/prices?$filter=serviceName%20eq%20'Foundry%20Models'%20and%20armRegionName%20eq%20'eastus'%20and%20priceType%20eq%20'Consumption'"
     },
     "azure/eu/gpt-4.1-nano": {
-        "deprecation_date": "2026-10-14",
+        "deprecation_date": "2027-04-14",
         "cache_read_input_token_cost": 2.8e-08,
         "input_cost_per_token": 1.1e-07,
         "input_cost_per_token_batches": 5.5e-08,
@@ -69469,7 +69469,7 @@
         "source": "https://prices.azure.com/api/retail/prices?$filter=serviceName%20eq%20'Foundry%20Models'%20and%20armRegionName%20eq%20'eastus'%20and%20priceType%20eq%20'Consumption'"
     },
     "azure/us/gpt-4.1-nano": {
-        "deprecation_date": "2026-10-14",
+        "deprecation_date": "2027-04-14",
         "cache_read_input_token_cost": 2.8e-08,
         "input_cost_per_token": 1.1e-07,
         "input_cost_per_token_batches": 5.5e-08,
diff --git a/model_prices_and_context_window.json b/model_prices_and_context_window.json
index 49d983f0254..5d909128cf7 100644
--- a/model_prices_and_context_window.json
+++ b/model_prices_and_context_window.json
@@ -5300,7 +5300,7 @@
         "supports_web_search": false
     },
     "azure/gpt-4.1-nano": {
-        "deprecation_date": "2026-10-14",
+        "deprecation_date": "2027-04-14",
         "cache_read_input_token_cost": 2.5e-08,
         "input_cost_per_token": 1e-07,
         "input_cost_per_token_batches": 5e-08,
@@ -5334,7 +5334,7 @@
         "supports_vision": true
     },
     "azure/gpt-4.1-nano-2025-04-14": {
-        "deprecation_date": "2026-10-14",
+        "deprecation_date": "2027-04-14",
         "cache_read_input_token_cost": 2.5e-08,
         "input_cost_per_token": 1e-07,
         "input_cost_per_token_batches": 5e-08,
@@ -10207,7 +10207,7 @@
         "supports_web_search": false
     },
     "azure/us/gpt-4.1-nano-2025-04-14": {
-        "deprecation_date": "2026-10-14",
+        "deprecation_date": "2027-04-14",
         "cache_read_input_token_cost": 2.8e-08,
         "input_cost_per_token": 1.1e-07,
         "input_cost_per_token_batches": 5.5e-08,
@@ -69115,7 +69115,7 @@
         "source": "https://prices.azure.com/api/retail/prices?$filter=serviceName%20eq%20'Foundry%20Models'%20and%20armRegionName%20eq%20'eastus'%20and%20priceType%20eq%20'Consumption'"
     },
     "azure/eu/gpt-4.1-nano": {
-        "deprecation_date": "2026-10-14",
+        "deprecation_date": "2027-04-14",
         "cache_read_input_token_cost": 2.8e-08,
         "input_cost_per_token": 1.1e-07,
         "input_cost_per_token_batches": 5.5e-08,
@@ -69469,7 +69469,7 @@
         "source": "https://prices.azure.com/api/retail/prices?$filter=serviceName%20eq%20'Foundry%20Models'%20and%20armRegionName%20eq%20'eastus'%20and%20priceType%20eq%20'Consumption'"
     },
     "azure/us/gpt-4.1-nano": {
-        "deprecation_date": "2026-10-14",
+        "deprecation_date": "2027-04-14",
         "cache_read_input_token_cost": 2.8e-08,
         "input_cost_per_token": 1.1e-07,
         "input_cost_per_token_batches": 5.5e-08,

From 8f613511cf557660dec8f5af557a99c8b8e4539b Mon Sep 17 00:00:00 2001
From: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Date: Sat, 19 Sep 2026 16:03:42 +0000
Subject: [PATCH 3/4] test(utils): use a synthetic snapshot date in the
 dated-to-undated fallback test

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
---
 tests/test_litellm/test_utils.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tests/test_litellm/test_utils.py b/tests/test_litellm/test_utils.py
index b0d3aa951b9..be4e2b6006c 100644
--- a/tests/test_litellm/test_utils.py
+++ b/tests/test_litellm/test_utils.py
@@ -186,14 +186,15 @@ def test_get_model_info_strips_openai_finetune_ids_without_a_custom_suffix(local
 @pytest.mark.parametrize(
     ("model", "custom_llm_provider", "expected_key"),
     [
-        ("gpt-5.6-luna-2026-07-09", "openai", "gpt-5.6-luna"),
-        ("gpt-5.6-luna-2026-07-09", "azure", "azure/gpt-5.6-luna"),
+        ("gpt-5.6-luna", "openai", "gpt-5.6-luna"),
+        ("gpt-5.6-luna", "azure", "azure/gpt-5.6-luna"),
     ],
 )
 def test_get_model_info_falls_back_from_dated_snapshot_to_undated_entry(
     local_model_cost_map, model, custom_llm_provider, expected_key
 ):
-    info = litellm.get_model_info(model=model, custom_llm_provider=custom_llm_provider)
+    """Uses a far-future snapshot date so the map never grows an exact dated key for it"""
+    info = litellm.get_model_info(model=f"{model}-2099-12-31", custom_llm_provider=custom_llm_provider)
     assert info["key"] == expected_key
 
 

From 2f1c8669ecfd54bf03d8111dd2826cf38087054c Mon Sep 17 00:00:00 2001
From: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Date: Sat, 19 Sep 2026 16:40:05 +0000
Subject: [PATCH 4/4] fix(model_prices): drop anthropic "not sooner than"
 floors from deprecation_date

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
---
 ...model_prices_and_context_window_backup.json | 18 ------------------
 model_prices_and_context_window.json           | 18 ------------------
 2 files changed, 36 deletions(-)

diff --git a/litellm/model_prices_and_context_window_backup.json b/litellm/model_prices_and_context_window_backup.json
index 339303ccfff..cf85bf03ad8 100644
--- a/litellm/model_prices_and_context_window_backup.json
+++ b/litellm/model_prices_and_context_window_backup.json
@@ -14246,7 +14246,6 @@
         "source": "https://developers.openai.com/api/docs/pricing"
     },
     "claude-haiku-4-5-20251001": {
-        "deprecation_date": "2026-10-15",
         "cache_creation_input_token_cost": 1.25e-06,
         "cache_creation_input_token_cost_above_1hr": 2e-06,
         "cache_read_input_token_cost": 1e-07,
@@ -14270,7 +14269,6 @@
         "prompt_cache_min_tokens": 4096
     },
     "claude-haiku-4-5": {
-        "deprecation_date": "2026-10-15",
         "cache_creation_input_token_cost": 1.25e-06,
         "cache_creation_input_token_cost_above_1hr": 2e-06,
         "cache_read_input_token_cost": 1e-07,
@@ -14420,7 +14418,6 @@
         "prompt_cache_min_tokens": 1024
     },
     "claude-sonnet-4-5": {
-        "deprecation_date": "2026-09-29",
         "cache_creation_input_token_cost": 3.75e-06,
         "cache_creation_input_token_cost_above_1hr": 6e-06,
         "cache_creation_input_token_cost_above_1hr_above_200k_tokens": 1.2e-05,
@@ -14455,7 +14452,6 @@
         "source": "https://platform.claude.com/docs/en/about-claude/pricing"
     },
     "claude-sonnet-4-5-20250929": {
-        "deprecation_date": "2026-09-29",
         "cache_creation_input_token_cost": 3.75e-06,
         "cache_creation_input_token_cost_above_1hr": 6e-06,
         "cache_creation_input_token_cost_above_1hr_above_200k_tokens": 1.2e-05,
@@ -14491,7 +14487,6 @@
         "source": "https://docs.anthropic.com/en/docs/about-claude/pricing"
     },
     "claude-sonnet-5": {
-        "deprecation_date": "2027-06-30",
         "cache_creation_input_token_cost": 2.5e-06,
         "cache_creation_input_token_cost_above_1hr": 4e-06,
         "cache_read_input_token_cost": 2e-07,
@@ -14530,7 +14525,6 @@
         "source": "https://platform.claude.com/docs/en/about-claude/pricing"
     },
     "claude-sonnet-4-6": {
-        "deprecation_date": "2027-02-17",
         "cache_creation_input_token_cost": 3.75e-06,
         "cache_creation_input_token_cost_above_1hr": 6e-06,
         "cache_read_input_token_cost": 3e-07,
@@ -14684,7 +14678,6 @@
         "prompt_cache_min_tokens": 1024
     },
     "claude-opus-4-5-20251101": {
-        "deprecation_date": "2026-11-24",
         "cache_creation_input_token_cost": 6.25e-06,
         "cache_creation_input_token_cost_above_1hr": 1e-05,
         "cache_read_input_token_cost": 5e-07,
@@ -14714,7 +14707,6 @@
         "prompt_cache_min_tokens": 4096
     },
     "claude-opus-4-5": {
-        "deprecation_date": "2026-11-24",
         "cache_creation_input_token_cost": 6.25e-06,
         "cache_creation_input_token_cost_above_1hr": 1e-05,
         "cache_read_input_token_cost": 5e-07,
@@ -14745,7 +14737,6 @@
         "source": "https://platform.claude.com/docs/en/about-claude/pricing"
     },
     "claude-opus-4-6": {
-        "deprecation_date": "2027-02-05",
         "cache_creation_input_token_cost": 6.25e-06,
         "cache_creation_input_token_cost_above_1hr": 1e-05,
         "cache_read_input_token_cost": 5e-07,
@@ -14783,7 +14774,6 @@
         "source": "https://platform.claude.com/docs/en/about-claude/pricing"
     },
     "claude-opus-4-6-20260205": {
-        "deprecation_date": "2027-02-05",
         "cache_creation_input_token_cost": 6.25e-06,
         "cache_creation_input_token_cost_above_1hr": 1e-05,
         "cache_read_input_token_cost": 5e-07,
@@ -14820,7 +14810,6 @@
         "prompt_cache_min_tokens": 4096
     },
     "claude-opus-4-7": {
-        "deprecation_date": "2027-04-16",
         "cache_creation_input_token_cost": 6.25e-06,
         "cache_creation_input_token_cost_above_1hr": 1e-05,
         "cache_read_input_token_cost": 5e-07,
@@ -14859,7 +14848,6 @@
         "source": "https://platform.claude.com/docs/en/about-claude/pricing"
     },
     "claude-opus-4-7-20260416": {
-        "deprecation_date": "2027-04-16",
         "cache_creation_input_token_cost": 6.25e-06,
         "cache_creation_input_token_cost_above_1hr": 1e-05,
         "cache_read_input_token_cost": 5e-07,
@@ -14897,7 +14885,6 @@
         "prompt_cache_min_tokens": 2048
     },
     "claude-fable-5": {
-        "deprecation_date": "2027-06-09",
         "cache_creation_input_token_cost": 1.25e-05,
         "cache_creation_input_token_cost_above_1hr": 2e-05,
         "cache_read_input_token_cost": 1e-06,
@@ -14937,7 +14924,6 @@
         "source": "https://platform.claude.com/docs/en/about-claude/pricing"
     },
     "claude-fable-5-1": {
-        "deprecation_date": "2027-09-01",
         "cache_creation_input_token_cost": 1.25e-05,
         "cache_creation_input_token_cost_above_1hr": 2e-05,
         "cache_read_input_token_cost": 2.5e-07,
@@ -14978,7 +14964,6 @@
         "source": "https://platform.claude.com/docs/en/about-claude/pricing"
     },
     "claude-opus-5": {
-        "deprecation_date": "2027-07-24",
         "cache_creation_input_token_cost": 6.25e-06,
         "cache_creation_input_token_cost_above_1hr": 1e-05,
         "cache_read_input_token_cost": 5e-07,
@@ -15020,7 +15005,6 @@
         "source": "https://platform.claude.com/docs/en/about-claude/pricing"
     },
     "claude-opus-4-8": {
-        "deprecation_date": "2027-05-28",
         "cache_creation_input_token_cost": 6.25e-06,
         "cache_creation_input_token_cost_above_1hr": 1e-05,
         "cache_read_input_token_cost": 5e-07,
@@ -60339,7 +60323,6 @@
         "supports_audio_output": true
     },
     "claude-mythos-5": {
-        "deprecation_date": "2027-06-09",
         "cache_creation_input_token_cost": 1.25e-05,
         "cache_creation_input_token_cost_above_1hr": 2e-05,
         "cache_read_input_token_cost": 1e-06,
@@ -60379,7 +60362,6 @@
         }
     },
     "claude-mythos-5-1": {
-        "deprecation_date": "2027-09-01",
         "cache_creation_input_token_cost": 1.25e-05,
         "cache_creation_input_token_cost_above_1hr": 2e-05,
         "cache_read_input_token_cost": 2.5e-07,
diff --git a/model_prices_and_context_window.json b/model_prices_and_context_window.json
index 339303ccfff..cf85bf03ad8 100644
--- a/model_prices_and_context_window.json
+++ b/model_prices_and_context_window.json
@@ -14246,7 +14246,6 @@
         "source": "https://developers.openai.com/api/docs/pricing"
     },
     "claude-haiku-4-5-20251001": {
-        "deprecation_date": "2026-10-15",
         "cache_creation_input_token_cost": 1.25e-06,
         "cache_creation_input_token_cost_above_1hr": 2e-06,
         "cache_read_input_token_cost": 1e-07,
@@ -14270,7 +14269,6 @@
         "prompt_cache_min_tokens": 4096
     },
     "claude-haiku-4-5": {
-        "deprecation_date": "2026-10-15",
         "cache_creation_input_token_cost": 1.25e-06,
         "cache_creation_input_token_cost_above_1hr": 2e-06,
         "cache_read_input_token_cost": 1e-07,
@@ -14420,7 +14418,6 @@
         "prompt_cache_min_tokens": 1024
     },
     "claude-sonnet-4-5": {
-        "deprecation_date": "2026-09-29",
         "cache_creation_input_token_cost": 3.75e-06,
         "cache_creation_input_token_cost_above_1hr": 6e-06,
         "cache_creation_input_token_cost_above_1hr_above_200k_tokens": 1.2e-05,
@@ -14455,7 +14452,6 @@
         "source": "https://platform.claude.com/docs/en/about-claude/pricing"
     },
     "claude-sonnet-4-5-20250929": {
-        "deprecation_date": "2026-09-29",
         "cache_creation_input_token_cost": 3.75e-06,
         "cache_creation_input_token_cost_above_1hr": 6e-06,
         "cache_creation_input_token_cost_above_1hr_above_200k_tokens": 1.2e-05,
@@ -14491,7 +14487,6 @@
         "source": "https://docs.anthropic.com/en/docs/about-claude/pricing"
     },
     "claude-sonnet-5": {
-        "deprecation_date": "2027-06-30",
         "cache_creation_input_token_cost": 2.5e-06,
         "cache_creation_input_token_cost_above_1hr": 4e-06,
         "cache_read_input_token_cost": 2e-07,
@@ -14530,7 +14525,6 @@
         "source": "https://platform.claude.com/docs/en/about-claude/pricing"
     },
     "claude-sonnet-4-6": {
-        "deprecation_date": "2027-02-17",
         "cache_creation_input_token_cost": 3.75e-06,
         "cache_creation_input_token_cost_above_1hr": 6e-06,
         "cache_read_input_token_cost": 3e-07,
@@ -14684,7 +14678,6 @@
         "prompt_cache_min_tokens": 1024
     },
     "claude-opus-4-5-20251101": {
-        "deprecation_date": "2026-11-24",
         "cache_creation_input_token_cost": 6.25e-06,
         "cache_creation_input_token_cost_above_1hr": 1e-05,
         "cache_read_input_token_cost": 5e-07,
@@ -14714,7 +14707,6 @@
         "prompt_cache_min_tokens": 4096
     },
     "claude-opus-4-5": {
-        "deprecation_date": "2026-11-24",
         "cache_creation_input_token_cost": 6.25e-06,
         "cache_creation_input_token_cost_above_1hr": 1e-05,
         "cache_read_input_token_cost": 5e-07,
@@ -14745,7 +14737,6 @@
         "source": "https://platform.claude.com/docs/en/about-claude/pricing"
     },
     "claude-opus-4-6": {
-        "deprecation_date": "2027-02-05",
         "cache_creation_input_token_cost": 6.25e-06,
         "cache_creation_input_token_cost_above_1hr": 1e-05,
         "cache_read_input_token_cost": 5e-07,
@@ -14783,7 +14774,6 @@
         "source": "https://platform.claude.com/docs/en/about-claude/pricing"
     },
     "claude-opus-4-6-20260205": {
-        "deprecation_date": "2027-02-05",
         "cache_creation_input_token_cost": 6.25e-06,
         "cache_creation_input_token_cost_above_1hr": 1e-05,
         "cache_read_input_token_cost": 5e-07,
@@ -14820,7 +14810,6 @@
         "prompt_cache_min_tokens": 4096
     },
     "claude-opus-4-7": {
-        "deprecation_date": "2027-04-16",
         "cache_creation_input_token_cost": 6.25e-06,
         "cache_creation_input_token_cost_above_1hr": 1e-05,
         "cache_read_input_token_cost": 5e-07,
@@ -14859,7 +14848,6 @@
         "source": "https://platform.claude.com/docs/en/about-claude/pricing"
     },
     "claude-opus-4-7-20260416": {
-        "deprecation_date": "2027-04-16",
         "cache_creation_input_token_cost": 6.25e-06,
         "cache_creation_input_token_cost_above_1hr": 1e-05,
         "cache_read_input_token_cost": 5e-07,
@@ -14897,7 +14885,6 @@
         "prompt_cache_min_tokens": 2048
     },
     "claude-fable-5": {
-        "deprecation_date": "2027-06-09",
         "cache_creation_input_token_cost": 1.25e-05,
         "cache_creation_input_token_cost_above_1hr": 2e-05,
         "cache_read_input_token_cost": 1e-06,
@@ -14937,7 +14924,6 @@
         "source": "https://platform.claude.com/docs/en/about-claude/pricing"
     },
     "claude-fable-5-1": {
-        "deprecation_date": "2027-09-01",
         "cache_creation_input_token_cost": 1.25e-05,
         "cache_creation_input_token_cost_above_1hr": 2e-05,
         "cache_read_input_token_cost": 2.5e-07,
@@ -14978,7 +14964,6 @@
         "source": "https://platform.claude.com/docs/en/about-claude/pricing"
     },
     "claude-opus-5": {
-        "deprecation_date": "2027-07-24",
         "cache_creation_input_token_cost": 6.25e-06,
         "cache_creation_input_token_cost_above_1hr": 1e-05,
         "cache_read_input_token_cost": 5e-07,
@@ -15020,7 +15005,6 @@
         "source": "https://platform.claude.com/docs/en/about-claude/pricing"
     },
     "claude-opus-4-8": {
-        "deprecation_date": "2027-05-28",
         "cache_creation_input_token_cost": 6.25e-06,
         "cache_creation_input_token_cost_above_1hr": 1e-05,
         "cache_read_input_token_cost": 5e-07,
@@ -60339,7 +60323,6 @@
         "supports_audio_output": true
     },
     "claude-mythos-5": {
-        "deprecation_date": "2027-06-09",
         "cache_creation_input_token_cost": 1.25e-05,
         "cache_creation_input_token_cost_above_1hr": 2e-05,
         "cache_read_input_token_cost": 1e-06,
@@ -60379,7 +60362,6 @@
         }
     },
     "claude-mythos-5-1": {
-        "deprecation_date": "2027-09-01",
         "cache_creation_input_token_cost": 1.25e-05,
         "cache_creation_input_token_cost_above_1hr": 2e-05,
         "cache_read_input_token_cost": 2.5e-07,