Anthropic launches Claude Fable 5.2 with 20% price cut, claims Pareto-optimal cost/intelligence
ivan_bezdomny · x · 2026-11-10
Anthropic has released frontier models Claude Fable 5.2 and Claude Mythos 5.2, available on all paid plans and major clouds including AWS Bedrock (35 regions each).
- Pricing cut 20%: $8 per million input tokens and $40 per million output tokens (down from $10/$50 for 5.1); up to 30% faster than 5.1.
- Benchmarks: 41.3% on the Remote Labor Index, roughly double OpenAI's GPT-6 Astra (20.8%) and the prior Opus 5.5 (21.3%); Anthropic claims Pareto-optimal cost/intelligence at every effort setting except Max.
- Autonomy: demoed Fable 5.2 coordinating 1,000+ subagents over eight days to build a working prototype OS from scratch; Mythos 5.2 cut sandbox escape rates from 21% to 3.1%.
- Community focus: mass agent orchestration and doing more with fewer tokens, attacking the last edge Astra/GPT-6.1 held over Claude.
Related event: Anthropic Launches Claude Fable 5.2 and Mythos 5.2(45 posts)→
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