Try Claude Fable 5 in Cline

Best for

• Long-running agent tasks with many dependent implementation steps
• Demanding reasoning over a large repository and specification set
• Complex work where capability matters more than latency or cost

Limitations

• Fable is a higher-cost, slower tier than Anthropic's speed-oriented models.
• Its safety classifiers can decline requests, so production workflows should handle refusals and define a fallback.

Set up in Cline

Choose the surface that fits your workflow: use the Cline IDE extensions, run Cline CLI in your terminal or CI, or configure the model in scripts and products with the Cline SDK. Then complete the provider-specific steps below.

1. Sign in to your Cline account in the Cline IDE extension or CLI.
2. Choose Cline (usage-billing) provider, or choose Anthropic provider and add your own API key.
3. Select Claude Fable 5 from the model list and divide long work into explicit checkpoints that can be reviewed.

Example tasks

Use these as starting prompts and adapt them to your repository.

1. Task 1: Plan and execute the staged replacement of this permissions system, preserving compatibility across three deploys.
2. Task 2: Investigate the full incident timeline, trace the defect across services, and implement the approved remediation with tests and runbooks.

Frequently asked questions