Claude Fable 5 arrives: the first Mythos-class model for everyone
Anthropic released Claude Fable 5, a public version of Mythos that falls back to Opus 4.8 in high-risk areas.
What's new
Anthropic released Claude Fable 5, the first publicly available Mythos-class model.
Pricing (API)
| Input | Output | |
|---|---|---|
| Fable 5 / Mythos 5 | $10 / M tokens | $50 / M tokens |
That's double Opus 4.8.
Availability
- Claude API and consumption-based Enterprise plans.
- Included in Pro, Max, Team and seat-based Enterprise through June 22; usage credits required from June 23.
Safeguards
- In high-risk areas (cybersecurity, biology, chemistry), it falls back to Opus 4.8.
- Anthropic says at least 95% of sessions run entirely on Fable 5.
- "Internally, we ran an external bug bounty that produced no universal jailbreaks in over 1,000 hours of testing."
Games too
TechCrunch found Fable 5 can make fun video games with the click of a button.
Founder and editor-in-chief of Kurd Developers. Phone and tech news on YouTube, Instagram and TikTok.
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