Claude Fable 5.1 Now Live on OpenRouter

Key Info

Anthropic's Claude Fable 5.1 is now live on OpenRouter, positioned as a direct upgrade for existing Fable 5 workloads.

Highlights

• Biggest gains in agentic coding, long-running workflows, visual code generation, finance, and analysis.
• Available immediately on OpenRouter for testing and integration.
• Designed as a drop-in upgrade path for teams already running Fable 5 models.