Claude Fable 5.5
anthropic/claude-fable-5.5Claude Fable 5.5 is the expected successor to Claude Fable 5.1, Anthropic's tier above Opus for repository-scale coding, long-running agents and high-stakes review. Anthropic has not officially released it yet; specifications, pricing and API availability will be confirmed at launch.
Coming soonBrowse available models
- Status
- Coming soon
- Pricing
- TBA
- Context window
- N/A
- Max output
- 128K
Coming soon
API not yet available
This model is listed ahead of its public release. API calls, the playground and pricing will open once the provider makes it generally available. Until then, requests to this model ID return 404 model_not_available.
Specifications
Pricing
- Pricing
- TBA
Context & modalities
- Max output
- 128,000 tokens
- Input
- Text, image
- Output
- Text
Capabilities
- Chat
- Supported
- Vision
- Supported
- Reasoning
- Supported
- Structured output
- Supported
- Function calling
- Supported
- Audio input
- Not supported
Access
- Provider
- Anthropic
- Model ID
- anthropic/claude-fable-5.5
- Execution
- sync
- API
- Not yet available
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Compare models
| Model | Context | Input / 1M | Output / 1M | Released |
|---|---|---|---|---|
Anthropic: Claude Fable 5.5This model Anthropic | — | TBA | TBA | Oct 4, 2026 |
Anthropic | 1M | — | — | Sep 28, 2026 |
Anthropic | 1M | — | — | Sep 22, 2026 |
Anthropic | 1M | — | — | Sep 1, 2026 |
Anthropic | 1M | — | — | Jul 25, 2026 |
Anthropic | 1M | — | — | Jun 30, 2026 |