Limit sub-session models based on the main session model
Nobody has claimed this yet.
Assessment
- Difficulty
- 5/5
- Estimated time
- Over a week
- Newbie friendliness
- 48/100
- Issue type
- Feature
- Clarity
- Mostly clear
- Activity status
- Active
- Domain
- ai
Research direction
Start by tracing how the Copilot app selects models for main sessions, sub-sessions, and nested sub-sessions, then locate the settings surface where a restriction could be configured. Done means supporting the same-model, same-or-cheaper, and unrestricted choices, with the selected limit enforced recursively and documented or tested as appropriate.
Written by the indexing model from the issue text.
Description
Feature summary
Allow users to prevent sub-sessions from using models that are more expensive than the model selected for the main session.
What problem are you trying to solve?
A Copilot session can launch sub-sessions that choose more expensive models than the one explicitly selected for the main session.
This makes usage costs unpredictable, especially in workflows that spawn multiple sub-sessions.
Proposed solution
Add a setting to limit sub-sessions to:
- The same model as the parent session
- The same model or cheaper models
- Any model
The restriction should also apply recursively to nested sub-sessions.
Workflow impact
This would give users and teams better cost control while still allowing Copilot to choose models automatically within a defined limit.
Installation context
No response
Additional context
No response
- Dominant language
- No language data
- Stars
- 2.1k
- Forks
- 157
- PR merge metrics
- No merged PRs in 30d
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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