Anthropic says Opus 5.5 matches Fable 5.1 “on most tasks” while costing about 40% less to run than Opus 5; Opus 5.5 costs $4/1M input and $20/1M output tokens
Ask about this article... According to Anthropic, Opus 5.5 matches Claude Fable 5.1 “on most tasks” while costing about 40 percent less to run than Opus 5.
Claude Fable 5.1 and Mythos 5.1 are Anthropic's first models to watermark text outputs; a detection API is available to eligible groups as required under EU law
Ben Patterson /PCWorld:
Anthropic releases Claude Fable 5.1, which is generally available, and Mythos 5.1, for trusted partners and with cybersecurity and life sciences safeguards
We're introducing Claude Fable 5.1 and Claude Mythos 5.1. They're the world's most advanced models for coding and knowledge work …
Claude Fable 5.1 and Mythos 5.1 are Anthropic's first models to watermark text outputs; a detection API is available to eligible groups as required under EU law
Ben Patterson /PCWorld:NEW
Anthropic unveils Claude Fable 5.1, which is generally available, and Mythos 5.1, for trusted partners and with cybersecurity and life sciences safeguards
We're introducing Claude Fable 5.1 and Claude Mythos 5.1. They're the world's most advanced models for coding and knowledge work …
Anthropic updates Claude Fable 5's biology safeguards to reduce false positives, cutting biology-related “fallbacks” by ~85% in testing across product surfaces
We're making updates to Claude Fable 5's biology safeguards in a way that substantially reduces false positives.
Anthropic says Claude Fable 5 will be included in Max and Team Premium plans at 50% of limits from July 20 and via usage credits for Pro and Team Standard users
Beginning July 20, Claude Fable 5 will be included in all Max and Team Premium plans, at 50% of limits. Pro and Team Standard users will continue to have access to Fable via usage credits, and will re...
Anthropic extends Claude Fable 5 access to all paid plans through July 12; access to the model was set to shift to token-based usage on July 7
Anthropic announced today that it is expanding Claude Cowork capabilities from the desktop app to the web and mobile.