Unverified50% confidenceFactExact time
GPT-6 Astra and GPT-6.1 Sol do not support disabling reasoning, and receiving reasoning.effort: "none" causes them to return a 400 error.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/8/2026
First Seen
Valid until: 1/6/2027
Sources
Related Entities
Related Claims
Unverifiedv3.0.70 fixes a 400 error triggered when generating commit messages and executing tasks in reasoning-off mode, affecting models including GPT-6 Astra, GPT-6.1 Sol, Claude Fable 5, and Claude Opus 5.5.79% similarUnverifiedThe previously attempted version 5.6 Sol failed to resolve the issue, while GPT-6 Astra ultimately identified the root cause of the fault.77% similarVerifiedGPT-6.1 Sol lacks publicly available benchmark data to support its claim of intelligence approaching that of Astra.74% similarUnverifiedGPT-6.1 Sol performs poorly on long-duration unattended rewriting tasks, stubbornly adhering to process rules without seeking help when progress stalls.72% similarUnverifiedThe reasoningEffortUpdate: 'none' capability is designed for GPT-6 Sol and Luna models and can be used in request-level options and localized system messages.70% similar
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