Allow configuration of AI models for Copilot CLI built-in agents #1263
Description
Describe the feature or problem you'd like to solve
Allow users to specify and configure which AI models are used by built-in agents in Copilot CLI, including the possibility to choose from multiple available models and set model preferences in config files or per session.
Proposed solution
This feature would give users more control and flexibility over the language models powering their Copilot CLI workflows. It would enable advanced users to select the best model for their needs (e.g., latest Codex, GPT-4/5, GROK, etc.) for different built in sub-agents. Different codebases need different models which is a key capability of copilot CLI.
Example prompts or workflows
- Set or change the default model used by the Copilot CLI built in agents via a config file or a slash command
Additional context
When develpoing a math heavy codebase i usually need to plan using Gemini then implement in codex. Or for UX heavy i usually plan using Opus then implement using codex.