Claude Fable 5
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A to Z
- A · App
- Yes
- B · Built By
- Anthropic
- C · CEO & Politics
- Dario Amodei — Pro-AI-regulation; first-ever $1M personal donation to bipartisan Public First super PAC (Jul 2026); otherwise avoids partisan politics
- D · Date
- 2026
- E · Expertise
- Beginner (app available)
- F · Free Tier
- No free tier
- G · Generates
- Text only
- H · Deployment
- Cloud (claude.ai + API + consumption-based Enterprise)
- I · Inputs
- Text+Image+Audio
- J · Jurisdiction
- USA
- K · Key Staffers
- Daniela Amodei (President), Tom Brown (Co-Founder)
- L · Languages
- English-primary
- M · Model Type
- Multimodal LLM
- N · Safety Issues
- Conservative dual-use safeguards: high-risk cybersecurity, biology, and chemistry queries fall back to Claude Opus 4.8. Classifiers trigger in <5% of sessions on average and can catch benign requests. US export-control pause Jun 12–Jul 1, 2026; cybersecurity classifiers added at restoration.
- O · Open Source
- Proprietary
- P · Pricing
- API: $10/M input, $50/M output ($1/M cache hits); in Pro, Max, Team and some Enterprise plans via usage credits after July 7, 2026
- Q · AIDb Rating
- 9/10 · AIDb v2.0 (curated): Capability 10/10 · Currency 10/10 · Access 4/10 · Significance 9/10 → 8.95
- R · What Makes It Special
- Claude Fable 5 (June 9, 2026), Anthropic's first Mythos-class model made safe for general use: it shares its underlying model with Claude Mythos 5 but adds safeguards that send some cybersecurity and other risky requests to Claude Opus 4.8. Anthropic reports 80.3% on SWE-Bench Pro and 85.0% on OSWorld-Verified, with gains in long-horizon coding, knowledge work and vision. A US export-control directive suspended access from June 12 to July 1, 2026; Fable 5.1 has since succeeded it.
- S · Stock / Status
- Private ($380B valuation, Feb 2026); confidentially filed for IPO Jun 1, 2026
- T · Training Cutoff
- [UNKNOWN]
- U · Users
- [UNKNOWN]
- V · Voice Chat
- Yes
- W · Weights
- API only
- X · X Handle
- @AnthropicAI
- Y · Year Founded
- [UNKNOWN]
- Z · Bottom Line
- Proprietary Multimodal LLM from Anthropic, released 2026.
Data completeness 88% · Last verified 2026-08-09 · Primary source ↗
Cite this
“Claude Fable 5.” AIDb — The AI Database. Verified 2026-08-09. https://theaidatabase.com/m/anthropic-claude-fable-5.html
More from Anthropic
Claude · Claude 2 · Claude 2.1 · Claude 3 · Claude 3 Haiku · Claude 3 Opus · Claude 3 Sonnet · Claude 3.5