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Reasoning effort dropped, Claude Code

Quick fix

Wait for the next release containing the merged Responses proxy fix so reasoning.effort can be forwarded after model mapping.

Symptom

Section titled “Symptom”
Error output
Changing effort in the client has no effect.

Cause

Section titled “Cause”

This occurs when a Claude request is converted by CC Switch to the OpenAI Responses format. For `grok-4.7`, `supports_reasoning_effort()` does not include this model or its `grok-4.7-*` variants in its supported list. The conversion therefore omits `reasoning.effort`, causing xAI to use the default `high`.

A second variant exists in the same conversion path: in CC Switch `3.17.0`, an explicit `max` request from Claude Code is globally downgraded to `xhigh`. For the GPT-5.6 series, model-specific handling was proposed and implemented: preserve explicit `max`, while older models continue to fall back to `xhigh`.

Fix

Section titled “Fix”

  1. For `grok-4.7`, wait for the next release containing the merged #7369 fix; it forwards mapped `output_config.effort` as `reasoning.effort`.

  2. For an explicit `max` request in the GPT-5.6 series, use a version with the model-aware fix described in #7531; it preserves `max`, while older models remain compatible by falling back to `xhigh`.

Affected Versions

Section titled “Affected Versions”
ToolClaude Code
Version3.17.0
PlatformsLinux

Source Issues

Section titled “Source Issues”

This page is distilled from 2 real issues

FAQ

Section titled “FAQ”

(No FAQ yet)

Section titled “Related problems”
exceeded the 64000/128000 output tokenRemove or rewrite the rejected MCP tool JSON Schema `pattern` to prevent Codex OAuth from falsely reporting an output token limit.1 issues mergedOptional isolation forced output Claude CodeSet `strict: false` on ordinary function tools during Responses conversion and preserve the existing required fields in `required`.1 issues merged401 UnauthorizedUpgrade to cc-switch 4.0.x, or clear the stale third-party OPENAI_API_KEY from ~/.codex/auth.json manually, restart Codex, and sign in again with ChatGPT OAuth.2 issues merged

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