change clai default model to gpt-4.1 (#2227)

Author: samuelcolvin

clai/README.md

@@ -68,7 +68,7 @@ positional arguments:
 options:
   -h, --help            show this help message and exit
   -m [MODEL], --model [MODEL]
-                        Model to use, in format "<provider>:<model>" e.g. "openai:gpt-4o" or "anthropic:claude-3-7-sonnet-latest". Defaults to "openai:gpt-4o".
+                        Model to use, in format "<provider>:<model>" e.g. "openai:gpt-4.1" or "anthropic:claude-sonnet-4-0". Defaults to "openai:gpt-4.1".
   -a AGENT, --agent AGENT
                         Custom Agent to use, in format "module:variable", e.g. "mymodule.submodule:my_agent"
   -l, --list-models     List all available models and exit

docs/cli.md

@@ -60,7 +60,7 @@ uvx clai --help
 You can specify which model to use with the `--model` flag:
 
 ```bash
-uvx clai --model anthropic:claude-3-7-sonnet-latest
+uvx clai --model anthropic:claude-sonnet-4-0
 ```
 
 (a full list of models available can be printed with `uvx clai --list-models`)
@@ -72,7 +72,7 @@ You can specify a custom agent using the `--agent` flag with a module path and v
 ```python {title="custom_agent.py" test="skip"}
 from pydantic_ai import Agent
 
-agent = Agent('openai:gpt-4o', instructions='You always respond in Italian.')
+agent = Agent('openai:gpt-4.1', instructions='You always respond in Italian.')
 ```
 
 Then run:
@@ -92,7 +92,7 @@ Additionally, you can directly launch CLI mode from an `Agent` instance using `A
 ```python {title="agent_to_cli_sync.py" test="skip" hl_lines=4}
 from pydantic_ai import Agent
 
-agent = Agent('openai:gpt-4o', instructions='You always respond in Italian.')
+agent = Agent('openai:gpt-4.1', instructions='You always respond in Italian.')
 agent.to_cli_sync()
 ```
 
@@ -101,7 +101,7 @@ You can also use the async interface with `Agent.to_cli()`:
 ```python {title="agent_to_cli.py" test="skip" hl_lines=6}
 from pydantic_ai import Agent
 
-agent = Agent('openai:gpt-4o', instructions='You always respond in Italian.')
+agent = Agent('openai:gpt-4.1', instructions='You always respond in Italian.')
 
 async def main():
     await agent.to_cli()

pydantic_ai_slim/pydantic_ai/_cli.py

@@ -101,7 +101,9 @@ def cli_exit(prog_name: str = 'pai'):  # pragma: no cover
     sys.exit(cli(prog_name=prog_name))
 
 
-def cli(args_list: Sequence[str] | None = None, *, prog_name: str = 'pai') -> int:  # noqa: C901
+def cli(  # noqa: C901
+    args_list: Sequence[str] | None = None, *, prog_name: str = 'pai', default_model: str = 'openai:gpt-4.1'
+) -> int:
     """Run the CLI and return the exit code for the process."""
     parser = argparse.ArgumentParser(
         prog=prog_name,
@@ -120,7 +122,7 @@ def cli(args_list: Sequence[str] | None = None, *, prog_name: str = 'pai') -> in
         '-m',
         '--model',
         nargs='?',
-        help='Model to use, in format "<provider>:<model>" e.g. "openai:gpt-4o" or "anthropic:claude-3-7-sonnet-latest". Defaults to "openai:gpt-4o".',
+        help=f'Model to use, in format "<provider>:<model>" e.g. "openai:gpt-4.1" or "anthropic:claude-sonnet-4-0". Defaults to "{default_model}".',
     )
     # we don't want to autocomplete or list models that don't include the provider,
     # e.g. we want to show `openai:gpt-4o` but not `gpt-4o`
@@ -179,7 +181,7 @@ def cli(args_list: Sequence[str] | None = None, *, prog_name: str = 'pai') -> in
     model_arg_set = args.model is not None
     if agent.model is None or model_arg_set:
         try:
-            agent.model = infer_model(args.model or 'openai:gpt-4o')
+            agent.model = infer_model(args.model or default_model)
         except UserError as e:
             console.print(f'Error initializing [magenta]{args.model}[/magenta]:\n[red]{e}[/red]')
             return 1