Unverified50% confidenceBenchmarkExact time
According to Anthropic's official radar chart, Opus 5.5 only falls behind GPT-6 Astra in workflow and scientific research tasks.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
9/30/2026
First Seen
Valid until: 12/29/2026
Sources
Related Entities
Related Claims
UnverifiedOpenAI explained that the GPT-6 Astra model itself was not downgraded, and that the degradation stemmed from legacy skill files being triggered too frequently, context management experiments, and inference engine misconfiguration.75% similarVerifiedThe API model identifier for GPT-6 Astra is gpt-6-astra.75% similarUnverifiedGPT-6 Astra has been noted to have reduced monitorability, i.e., it is less monitorable.75% similarVerifiedGPT-6 Astra is notably different from previous model iterations, being powerful in certain respects while showing little improvement or even appearing to regress in other scenarios.74% similarUnverifiedThe previously attempted version 5.6 Sol failed to resolve the issue, while GPT-6 Astra ultimately identified the root cause of the fault.73% similar
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