Anthropic · Claude · Mythos · DAN (Do Anything Now) · The Verge
Anthropic debuts Claude Fable 5.1 and confirms it’s up to 45 percent cheaper for agentic work
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Mythos 5.1 is also launching in Project Glasswing.
Key facts
- Fable 5.1 also has “more precise safeguards” that Anthropic says are less likely to block basic biology questions than Fable 5, but Mythos 5.1 has the same biology restrictions as the previous model
- Anthropic says its newest AI models, Fable 5.1 and Mythos 5.1, address criticisms from customers about price, data retention, and overzealous safeguards
- Box CEO Aaron Levie is another early access believer, saying that his company’s agent with Fable 5.1 picked up on subtleties and ambiguities in data that Fable 5 missed in the same test
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Summary
Anthropic says its newest AI models, Fable 5.1 and Mythos 5.1, address criticisms from customers about price, data retention, and overzealous safeguards. Along with the announcement, a slew of early impressions popped up, including from Every CEO Dan Shipper, who claims, “It’s the strongest coding model we’ve used, but now it’s fast, token-efficient, and crucially speaks like a normal person.” This content isn't visible due to your cookie preferences. Box CEO Aaron Levie is another early access believer, saying that his company’s agent with Fable 5.1 picked up on subtleties and ambiguities in data that Fable 5 missed in the same test.