Claude Fable 5.1 is live on OpenRouter, targeting agentic coding and long-running workflows

Claude Fable 5.1 上线 OpenRouter

Anthropic released Claude Fable 5.1 on OpenRouter as a direct upgrade to Fable 5. The focus areas are agentic coding, long-running workflows, visual code generation, finance, and analytics. The post doesn't disclose benchmark numbers or pricing changes, so I'd wait for third-party evals.

Why it matters: Anthropic model update with four clear focus areas, directly relevant to Claude developers. But no benchmarks, no pricing, no third-party evals in the post — stays at 78, the featured threshold, pending real-world testing.