Model guidesAdvanced usersUpdated
Claude Fable 5 Guide
Claude Fable 5 is back online. Use it with claude --model claude-fable-5.
We recommend upgrading Claude Code to 2.1.198: run claude update. The minimum supported version is 2.1.170.
Note: this model is only available on the Claude Max 20x subscription endpoint. If you use another endpoint, switch it first in the console under Endpoint selection.
Related guides
Install Claude Code, Configure a Custom API, and Troubleshoot Windows
Install Claude Code, configure a custom API key and URL, verify Windows or Unix settings, and troubleshoot authentication, rate limits, and connections.
FAQ
Troubleshoot API keys, 401 and 429 responses, Windows environment variables, client connectivity, quotas, and support reporting.