Unverified50% confidenceBenchmarkExact time
Fable 5.2 beat every model on the market on the vast majority of benchmarks, losing only to Gemini 4 Carbon on the commercial workflow test and to Opus 5.5 on the knowledge work test.
1
Sources
50%
Confidence
Short-term (~14 days)
Relevance
11/10/2026
First Seen
Valid until: 11/24/2026
Sources
Anthropic Releases Fable 5.2 and Mythos 5.2: Benchmark Dominance and Biorobotics Breakthroughs
bilibiliPigfg00711/10/2026
Related Entities
Related Claims
UnverifiedGemini 4 Carbon lost to GPT-6 in large-scale software engineering tests.79% similarUnverifiedCoding assistant Klein commented that Gemini 4 Carbon is the industry's first frontier model to comprehensively surpass Claude and GPT, defeating Opus 5.5 on almost all benchmarks while costing only half as much to invoke.75% similarUnverifiedAcross multiple tests, Gemini 4 Carbon is about 3 times cheaper and about 2.5 times faster than Claude Opus 5.5, while output quality is comparable or even slightly better in most scenarios.72% similarUnverifiedReddit community users question whether the Gemini 4 Carbon benchmark table is meant to "cap" model capability by placing Astra above Opus 5.5.71% similar
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