GPT5 throws:
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Description
GPT5 throws:
Execution failed: CAPIError: 400 Function tools with reasoning_effort are not supported for gpt-5.6-terra in /v1/chat/completions. To use function tools, use /v1/responses or set reasoning_effort to 'none'. (Request ID: req_2e5baf1ac3b8436fb0cc959397f68f04)
---
| Field | Value |
| --- | --- |
| App version | 1.1.14 |
| OS | macOS 26.6.2 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Day 2 (Week 1) |
Contributor guide
Research direction
Reproduce the failure in the /chat path using app version 1.1.14 on macOS and compare the request against the reported gpt-5.6-terra error. Check how the request selects /v1/chat/completions, function tools, and reasoning_effort; done means the GPT5 request no longer throws this 400 error.
Written by the indexing model from the issue text.
Assessment
- Domain
- api, desktop
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Active
- Clarity
- Needs clarification
- Newbie friendliness
- 45/100