Anthropic releases Claude Fable 5.2 and Mythos 5.2

First seen Nov 2 Updated Nov 10, 16:12 UTC Heat 100 trending high evidence

Anthropic announced Claude Fable 5.2 and Claude Mythos 5.2. An Artificial Analysis post on Hacker News claims Fable 5.2 scores 65 on its index, the highest so far. A support page mentions launch offers.

What to do: Read Anthropic's announcement and the launch offers page for availability and pricing.
Who should care: Developers building on Claude models and teams comparing frontier models.

Why it matters: Developers can evaluate the new Fable 5.2 and Mythos 5.2 models, though the items give no pricing or API details.

Key facts

Models: Claude Fable 5.2 and Claude Mythos 5.2
Artificial Analysis score for Fable 5.2: 65 (per an HN post)

Models

nex-n2.6 Nex Agi

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claude-fable-5.2 Anthropic

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muse-ember Meta

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lfm-3-1.7b Liquid

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gemini-omni-1.2-flash Google

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Timeline

Official

Nov 5, 17:00 UTCNov 5
Gemini Omni 1.2 Flash: Fast and cost-effective with longer clipsblog.google · Google
Nov 5, 17:05 UTCNov 5
Gemini Omni 1.2 Flash: Fast and cost-effective with longer clipsdeepmind.google · Google DeepMind
Nov 8, 08:54 UTCNov 8
Claude status: Degraded performance for Claude Fable 5.1status.claude.com · Anthropic
Nov 9, 16:46 UTC23h ago
Claude Fable 5.2 in GitHub Copilotgithub.blog · GitHub
Nov 9, 20:04 UTC20h ago
Introducing Claude Fable 5.2 on AWSaws.amazon.com · Amazon
Nov 10, 00:05 UTC16h ago
GitHub status: Degraded availability for GPT-5.3 Codex and GPT-5.6 models in Copilotgithubstatus.com · Githubstatus

Evidence

High evidence: the claim comes from an official source (the company or project itself), or at least two independent sites reported it.

Details written Nov 10, 16:10 UTC from the sources listed above.