pr-agent/docs/docs/usage-guide/PR_agent_pro_models.md

PR-Agent Pro Models

The default models used by PR-Agent Pro are OpenAI's GPT-4 models. We use a combination of GPT-4-Turbo and GPT-4o to strike a balance between speed and quality.

However, users can change the model used by PR-Agent Pro to Claude-3.5-sonnet, which also excels at code tasks. To do so, add the following to your configuration file:

[config]
model="claude-3-5-sonnet"

Note that Claude models tend to give lower scores for each suggestion, so if you are using a threshold:

[pr_code_suggestions]
suggestions_score_threshold=...

You might need to adjust this value when switching models.

Dedicated models per tool

You can also use different models for different tools. For example, you can use the Claude-3.5-sonnet model only for the improve tool (and keep the default GPT-4 model for the other tools) by adding the following to your configuration file:

[github_app]
pr_commands = [
    "/describe --pr_description.final_update_message=false",
    "/review --pr_reviewer.num_code_suggestions=0",
    "/improve --config.model=claude-3-5-sonnet",
]