Anthropic launches Claude Fable 5.2 and Mythos 5.2, topping capability benchmarks
Anthropic announced Claude Fable 5.2 and Mythos 5.2 on November 9, 2026, its first frontier models since Dario Amodei's call for a slowdown. Fable 5.2 scores 174 on Epoch's Capabilities Index, five points above prior leader GPT-6 Astra, with faster, cheaper output.
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Timeline · 40 reports
- 2026-11-09 22:40 · DEV Community — AI
Claude Fable 5.2 & Mythos 5.2: The AI Models That Cut Your Lab Time in Half - 2026-11-09 22:32 · TestingCatalog AI News
Anthropic launches Claude Fable 5.2 and Mythos 5.2 - 2026-11-09 22:20 · CNET AI
Anthropic Introduces New Fable 5.2 and Mythos 5.2 AI Models - 2026-11-09 21:57 · DEV Community — Machine Learning
Anthropic releases Mythos and Fable models - 2026-11-09 21:55 · CNBC Technology
Anthropic releases first frontier models since Amodei’s call for slowdown - 2026-11-09 21:53 · DEV Community — AI
Anthropic Just Launched Claude Fable 5.2 and Mythos 5.2: 30% Faster, Cheaper, and Built for the Hardest Technical Work - 2026-11-09 21:27 · Mashable AI
Anthropic announces Claude Fable 5.2 and Mythos 5.2. Theye already solved black hole physics problems. - 2026-11-09 21:22 · AlphaSignal
Anthropic's Claude Fable 5.2 Beats GPT-6 Astra With a Rare Five-Point Jump - 2026-11-09 21:22 · The Information AI
Anthropic Releases New Frontier Models as IPO Nears - 2026-11-09 21:18 · Anthropic (X)
During pre-release testing, Claude Fable 5.2 and Claude Mythos 5.2 worked on ambitious projects in many different fields - 2026-11-09 21:15 · The Decoder
Claude Fable 5.2 and Mythos 5.2 cement Anthropic's AI lead just before its IPO - 2026-11-09 21:02 · Fortune AI
Anthropic debuts Claude Fable, Mythos 5.2 models, priced 20% below OpenAI's GPT-6 Astra - 2026-11-09 21:02 · Fortune AI
Anthropic debuts Claude Fable, Mythos 5.2 models, priced 20% below OpenAI’s GPT-6 Astra - 2026-11-09 20:45 · Reuters AI
Anthropic unveils new Fable, Mythos models as competition heats up ahead of IPO - 2026-11-09 20:41 · r/singularity
Claude solved two unsolved problems in black-hole physics: settling a 23-year-old question about whether black holes form suddenly in models of tiny universes, and discovering the exact limits of a 15-year-old method physicists use to rule out theories of quantum gravity. - 2026-11-09 20:40 · TechXplore AI & ML
Anthropic launches powerful new models ahead of Wall Street debut - 2026-11-09 20:04 · AWS Machine Learning Blog
Introducing Claude Fable 5.2 on AWS - 2026-11-09 20:00 · Techmeme
Anthropic prices Fable 5.2 and Mythos 5.2 at $8/1M input and $40/1M output tokens, down 20% from 5.1; fast mode costs $16/1M input and $80/1M output tokens - 2026-11-09 19:55 · VentureBeat AI
Anthropic releases Claude Fable 5.2 and Mythos 5.2, pairing new, record-high benchmarks with 20% API cost reduction - 2026-11-09 19:52 · AlphaSignal
Cursor's Claude Fable 5.2 Tops CursorBench at 60% With 20% Cheaper Tokens - 2026-11-09 19:24 · TechCrunch AI
Anthropic releases new Mythos and Fable models amid RSI concerns - 2026-11-09 19:22 · CNBC Technology
Anthropic unveils updated Fable, Mythos frontier models ahead of anticipated IPO - 2026-11-09 19:22 · The Next Web
Anthropic launches Claude Fable 5.2 and Mythos 5.2, and cuts Fable’s price - 2026-11-09 19:20 · r/ClaudeAI
Claude Fable 5.2 builds an operating system from scratch - 2026-11-09 19:20 · Anthropic (X)
Fable 5.2 is now available in the Claude Platform and Claude Code - 2026-11-09 19:17 · France 24 — Artificial Intelligence
Anthropic launches powerful new models ahead of Wall Street debut - 2026-11-09 19:17 · Anthropic (X)
Introducing Claude Fable 5.2 and Claude Mythos 5.2, designed to tackle the most daunting technical challenges - 2026-11-09 19:17 · Anthropic (X)
Claude Fable 5.2 and Claude Mythos 5.2 are available now - 2026-11-09 19:16 · Barron's
Anthropic Launches Powerful New Models Ahead Of Wall Street Debut - 2026-11-09 19:15 · Techmeme
Anthropic says during prerelease testing Mythos 5.2 and Fable 5.2 formalized the proof of Fermat's Last Theorem and solved two open black hole physics problems - 2026-11-09 19:09 · AlphaSignal
Anthropic's Claude Fable 5.2 Tops Cognition's Coding Benchmark at a Third of the Cost - 2026-11-09 19:08 · AlphaSignal
Anthropic's Claude Fable 5.2 Tops 36 Models but Max Reasoning Backfires - 2026-11-09 19:02 · Techmeme
Anthropic releases Mythos 5.2 and Fable 5.2, saying they are "best for the most ambitious, open-ended technical work", with outputs up to 30% faster than 5.1 (Anthropic) - 2026-11-09 19:00 · Bloomberg AI
Anthropic Unveils New Fable, Mythos AI Models Ahead of IPO - 2026-11-09 19:00 · CNBC Technology
Anthropic releases first frontier models since Amodei's call for slowdown as IPO buzz builds - 2026-11-09 19:00 · The Verge AI
Anthropic launches new Claude Fable and Mythos 5.2 models - 2026-11-09 18:59 · r/singularity
Introducing Fable 5.2 and Mythos 5.2 - 2026-11-09 18:57 · AlphaSignal
Anthropic's Claude Fable 5.2 Builds a Working OS From an Empty Folder - 2026-11-09 18:56 · Hacker News Front Page
Claude Fable 5.2 and Mythos 5.2 - 2026-11-09 00:00 · Vercel Blog
Claude Fable 5.2 now available on AI Gateway