docs: Replace deprecated Cohere model 'command' with 'command-r7b-12-… (#3201)

Co-authored-by: Marcelo Trylesinski <[email protected]>

Author: sijanonly

docs/models/cohere.md

@@ -27,7 +27,7 @@ You can then use `CohereModel` by name:
 ```python
 from pydantic_ai import Agent
 
-agent = Agent('cohere:command')
+agent = Agent('cohere:command-r7b-12-2024')
 ...
 ```
 
@@ -37,7 +37,7 @@ Or initialise the model directly with just the model name:
 from pydantic_ai import Agent
 from pydantic_ai.models.cohere import CohereModel
 
-model = CohereModel('command')
+model = CohereModel('command-r7b-12-2024')
 agent = Agent(model)
 ...
 ```
@@ -51,7 +51,7 @@ from pydantic_ai import Agent
 from pydantic_ai.models.cohere import CohereModel
 from pydantic_ai.providers.cohere import CohereProvider
 
-model = CohereModel('command', provider=CohereProvider(api_key='your-api-key'))
+model = CohereModel('command-r7b-12-2024', provider=CohereProvider(api_key='your-api-key'))
 agent = Agent(model)
 ...
 ```
@@ -67,7 +67,7 @@ from pydantic_ai.providers.cohere import CohereProvider
 
 custom_http_client = AsyncClient(timeout=30)
 model = CohereModel(
-    'command',
+    'command-r7b-12-2024',
     provider=CohereProvider(api_key='your-api-key', http_client=custom_http_client),
 )
 agent = Agent(model)

pydantic_ai_slim/pydantic_ai/models/__init__.py

@@ -129,15 +129,8 @@
         'cerebras:qwen-3-235b-a22b-thinking-2507',
         'cohere:c4ai-aya-expanse-32b',
         'cohere:c4ai-aya-expanse-8b',
-        'cohere:command',
-        'cohere:command-light',
-        'cohere:command-light-nightly',
         'cohere:command-nightly',
-        'cohere:command-r',
-        'cohere:command-r-03-2024',
         'cohere:command-r-08-2024',
-        'cohere:command-r-plus',
-        'cohere:command-r-plus-04-2024',
         'cohere:command-r-plus-08-2024',
         'cohere:command-r7b-12-2024',
         'deepseek:deepseek-chat',

pydantic_ai_slim/pydantic_ai/models/cohere.py

@@ -62,15 +62,8 @@
 LatestCohereModelNames = Literal[
     'c4ai-aya-expanse-32b',
     'c4ai-aya-expanse-8b',
-    'command',
-    'command-light',
-    'command-light-nightly',
     'command-nightly',
-    'command-r',
-    'command-r-03-2024',
     'command-r-08-2024',
-    'command-r-plus',
-    'command-r-plus-04-2024',
     'command-r-plus-08-2024',
     'command-r7b-12-2024',
 ]