Expired60% confidenceBenchmarkExact time
Referencing the LiveBench benchmark, Claude Fable 5.1 and GPT-6 Astra have comparable capabilities.
2
Sources
60%
Confidence
Short-term (~14 days)
Relevance
9/25/2026
First Seen
This claim has expired. It is kept for the record and no longer describes the current state.
Valid until: 10/9/2026(expired)
Sources
Related Entities
Related Claims
UnverifiedClaude Opus 5.5 topped the FrontierCode 1.1 benchmark, surpassing Fable 5 and GPT-6 Astra.79% similarVerifiedThe API model identifier for GPT-6 Astra is gpt-6-astra.79% similarUnverifiedUnder comparable performance, GPT-6 Astra's Token cost is approximately half that of Claude Fable 5.1.78% similarUnverifiedThe mixed version (GPT-6 Astra for planning and review + GLM 5.3 Flash for writing all code) consumes approximately one-quarter the tokens of the pure Claude version while performing almost on par.77% similarUnverifiedWithin the usage period, the Zenslab platform can invoke multiple models including GPT-5.5, GPT-5.6, and GPT-6 Astra.77% similar
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