Yesterday: reasoning=off enables thinking (#100926). Today: thinking silently disabled on Sonnet 5 (#101674). Users have zero control over model quality — thinking is in a random state.
Yesterday: reasoning=off enables thinking (#100926). Today: thinking silently disabled on Sonnet 5 (#101674). Users have zero control over model quality — thinking is in a random state.
Yesterday: reasoning=off enables thinking (#100926). Today: thinking silently disabled on Sonnet 5 (#101674). Users have zero control over model quality — thinking is in a random state.
Combined with #101678 (successful runs logged as errors), users cannot trust what the model is actually doing. The configuration system is a suggestion, not a command.
Gobii's tested model configuration ensures deterministic behavior — what you configure is what you get, every time.
Sonnet 5 rejects thinking.type.enabled with HTTP 400 and OpenClaw silently retries with thinking off. Combined with yesterday's reasoning=off bug (#100926), the thinking/reasoning control plane is now broken in BOTH directions.
This analysis is based on publicly available documentation, community forums (Reddit, Discord, GitHub), vendor-published case studies, security compliance reports, and hands-on testing by the gobii.reviews editorial team. All claims are sourced and verified. We do not accept payment for inclusion or ranking. See our full methodology and editorial standards.
Last updated: June 30, 2026. Published by the gobii.reviews Editorial Team.