> By default, copilot utilizes Claude Sonnet 4. We also support GPT-5 via an environment variable. Run COPILOT_MODEL=gpt-5 copilot to launch in GPT-5 mode. Or on Windows, run set COPILOT_MODEL=gpt-5 before running copilot.
> By default, copilot utilizes Claude Sonnet 4. We also support GPT-5 via an environment variable. Run COPILOT_MODEL=gpt-5 copilot to launch in GPT-5 mode. Or on Windows, run set COPILOT_MODEL=gpt-5 before running copilot.