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Claude Fable 5.5

anthropic/claude-fable-5.5

Claude 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
Coming soon
Context window
N/A
Max output
128K

Model card

Specifications

Pricing

Pricing
Coming soon

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

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.

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