Anthropic Ships Claude Fable 5 to Public, Mythos 5 to Trusted Orgs

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- Anthropic released Claude Mythos 5 to trusted organizations and Claude Fable 5 to the public, with Fable 5 described as a "safe" Mythos-class model that "can't be used for cyberattacks."
- Anthropic priced both Claude Fable 5 and Mythos 5 at $10 per 1M input tokens and $50 per 1M output tokens, per ZDNET.
- Claude Fable 5 is available on Amazon's AWS Bedrock platform, per About Amazon.
- Bloomberg framed the release as happening "ahead of IPO," connecting the model launch to Anthropic's market trajectory.
- TechRadar noted that Anthropic "spent months saying Mythos was too dangerous to release" before launching the public Fable 5 version "with risks."
- MakeUseOf reported there is only a 10-day window for the public to try the Mythos-level model.
Why it matters: Anthropic is splitting its most powerful model into a restricted tier (Mythos 5 for trusted organizations) and a public tier (Fable 5) with safety guardrails, pricing both at $10/$50 per million tokens. The tiered release structure, combined with Bloomberg's IPO framing, signals Anthropic is managing capability disclosure and public-facing brand risk ahead of a potential public offering.
