Claude Fable 5.1 | byteiota

Tag: Claude Fable 5.1

Claude Fable 5.1 tops WebDev Arena leaderboard with 1765 points benchmark score

News

Claude Fable 5.1 Is #1 on WebDev Arena: What Developers Get

Fable 5.1 tops WebDev Arena with 1,765 points and cuts cache-read pricing 75%. Here's how ...

September 17, 2026

Python code showing Claude Fable 5.1 tool_choice breaking change with 400 error fix

AI & Development

Claude Fable 5.1: Fix These 3 Breaking API Changes Now

Claude Fable 5.1 breaks tool_choice "any" and "tool" with a 400 error. Here are the ...

September 8, 2026

Abstract neural network visualization representing Claude Fable 5.1 AI model API release with blue nodes and data flow connections

News

Claude Fable 5.1: 75% Cheaper Cache, 2x Coding Boost

Claude Fable 5.1 is live on the API. Cache reads dropped 75%, AutomationBench nearly doubled. ...

September 5, 2026

Abstract gradient visualization representing the 75% cache cost reduction in Claude Fable 5.1 with blue and white data flow particles

News

Claude Fable 5.1: 75% Cheaper Cache, Stronger Agents

Anthropic released Claude Fable 5.1 yesterday with 75% cheaper cache reads and up to 45% ...

September 2, 2026