Unverified50% confidenceEventExact time
At 06:27 UTC, the status was updated to Identified, with the root cause of the Claude Sonnet 5.5 request errors located.
1
Sources
50%
Confidence
Short-term (~14 days)
Relevance
10/25/2026
First Seen
Valid until: 11/8/2026
Sources
Related Entities
Related Claims
UnverifiedUpgrading to Claude Sonnet 5.5 is accompanied by five API breaking changes involving adjustments to request parameters, response structures, and default behaviors.71% similarUnverifiedThe Anthropic status page made two updates for this incident: at 01:20 UTC it confirmed the high-frequency errors, and at 02:33 UTC it issued a resolved notice.62% similarUnverifiedBug two was that a configuration error in Claude API's TPU servers caused incorrect token generation, occasionally assigning high probability to tokens that should rarely appear, resulting in English prompts getting Thai or Chinese replies and code syntax errors; this problem affected Opus 4.1 and Opus 4 from August 25 to 28 and Sonnet 4 until a rollback on September 2, and third-party platforms were not affected.59% similarUnverifiedv1.24.0 fixes the issue where no alert was given when an LLM configuration could not find the referenced model, and now directly issues a warning, submitted by AK6800.56% similarUnverifiedOfficially, the fix was deployed at 05:41 UTC and the service entered the monitoring phase, and at 05:53 UTC it was formally marked as resolved.56% similar
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