From 73a518ae24fea314eac6bf9de9ecc78a980b1285 Mon Sep 17 00:00:00 2001
From: mateo-berri <277851410+mateo-berri@users.noreply.github.com>
Date: Wed, 20 May 2026 14:10:26 +0000
Subject: [PATCH] fix(tests): add mistral/ministral-8b-2512 to cost map and
 backfill in conftest

Mistral rotated the 'mistral/mistral-tiny' alias to return
'ministral-8b-2512' as the response model, which was missing from the
cost map. This caused test_completion_mistral_api and
test_completion_mistral_api_modified_input to fail in
litellm.completion_cost lookup.

- Add mistral/ministral-8b-2512 entry to both the in-tree
  model_prices_and_context_window.json and the bundled
  litellm/model_prices_and_context_window_backup.json (mirrors the
  existing openrouter/mistralai/ministral-8b-2512 pricing).

- litellm.model_cost is loaded at import time from the URL pinned to
  main, so the new backup entry isn't visible at test runtime until
  it also lands on main. Backfill any entries missing from the
  remote-fetched map into litellm.model_cost in the local_testing
  conftest so cost-calculator lookups succeed on this branch.
---
 .../model_prices_and_context_window_backup.json   | 15 +++++++++++++++
 model_prices_and_context_window.json              | 15 +++++++++++++++
 tests/local_testing/conftest.py                   | 13 +++++++++++++
 3 files changed, 43 insertions(+)

diff --git a/litellm/model_prices_and_context_window_backup.json b/litellm/model_prices_and_context_window_backup.json
index 02c5cb7a6d1..79285aa0b9e 100644
--- a/litellm/model_prices_and_context_window_backup.json
+++ b/litellm/model_prices_and_context_window_backup.json
@@ -24285,6 +24285,21 @@
         "supports_tool_choice": true,
         "supports_vision": true
     },
+    "mistral/ministral-8b-2512": {
+        "input_cost_per_token": 1.5e-07,
+        "litellm_provider": "mistral",
+        "max_input_tokens": 262144,
+        "max_output_tokens": 262144,
+        "max_tokens": 262144,
+        "mode": "chat",
+        "output_cost_per_token": 1.5e-07,
+        "source": "https://mistral.ai/pricing",
+        "supports_assistant_prefill": true,
+        "supports_function_calling": true,
+        "supports_response_schema": true,
+        "supports_tool_choice": true,
+        "supports_vision": true
+    },
     "mistral/mistral-tiny": {
         "input_cost_per_token": 2.5e-07,
         "litellm_provider": "mistral",
diff --git a/model_prices_and_context_window.json b/model_prices_and_context_window.json
index 75889e98dbb..5db89e37739 100644
--- a/model_prices_and_context_window.json
+++ b/model_prices_and_context_window.json
@@ -24455,6 +24455,21 @@
         "supports_tool_choice": true,
         "supports_vision": true
     },
+    "mistral/ministral-8b-2512": {
+        "input_cost_per_token": 1.5e-07,
+        "litellm_provider": "mistral",
+        "max_input_tokens": 262144,
+        "max_output_tokens": 262144,
+        "max_tokens": 262144,
+        "mode": "chat",
+        "output_cost_per_token": 1.5e-07,
+        "source": "https://mistral.ai/pricing",
+        "supports_assistant_prefill": true,
+        "supports_function_calling": true,
+        "supports_response_schema": true,
+        "supports_tool_choice": true,
+        "supports_vision": true
+    },
     "mistral/mistral-tiny": {
         "input_cost_per_token": 2.5e-07,
         "litellm_provider": "mistral",
diff --git a/tests/local_testing/conftest.py b/tests/local_testing/conftest.py
index 6a746041f15..5389dd96aed 100644
--- a/tests/local_testing/conftest.py
+++ b/tests/local_testing/conftest.py
@@ -22,6 +22,19 @@ sys.path.insert(
 )  # Adds the parent directory to the system path
 import litellm
 
+# ``litellm.model_cost`` is loaded at import time from the URL pinned to
+# ``main`` (``LITELLM_MODEL_COST_MAP_URL``).  The in-tree backup ships with
+# this branch and can include pricing entries that main has not yet picked
+# up (e.g. an upstream provider rotates a model id and the test cassette
+# records the new name).  Backfill any entries that are missing from the
+# remote-fetched map so cost-calculator lookups in tests succeed against
+# the cassette state the branch is being tested with.
+from litellm.litellm_core_utils.get_model_cost_map import GetModelCostMap
+
+for _k, _v in GetModelCostMap.load_local_model_cost_map().items():
+    litellm.model_cost.setdefault(_k, _v)
+del _k, _v
+
 from tests._vcr_conftest_common import (  # noqa: E402,F401
     VerboseReporterState,
     _pin_multipart_boundary,