Claude Fable 5.1
Anthropicclaude-fable-5-1
Released Sep 1, 2026
Providers
3
Context
1.0M
Input
$10.00/M
Output
$50.00/M
BAA-eligiblePHI requires a signed BAA from Concentrate and HIPAA-enabled organization.
Aliases:claude-fable5.1fable-5.1fable5.1fable-5-1claude-5-1-fable
Anthropic's most capable model for demanding reasoning and long-horizon agentic work, with a 1M context window. Successor to Fable 5 with cheaper cache reads; forced tool_choice is not supported.
azure/claude-fable-5-1QuantUnspecified
- Input
- $10.00/M
- Output
- $50.00/M
- Context
- 1.0M
- Max out
- 128K
- Cache read
- $0.25/M
- Cache write ephemeral_5m_input_tokens
- $12.50/M
- Thinking out
- $50.00/M
anthropic/claude-fable-5-1QuantUnspecified
- Input
- $10.00/M
- Output
- $50.00/M
- Context
- 1.0M
- Max out
- 128K
- Cache read
- $0.25/M
- Cache write ephemeral_5m_input_tokens
- $12.50/M
- Thinking out
- $50.00/M
vertex/claude-fable-5-1QuantUnspecified
- Input
- $10.00/M
- Output
- $50.00/M
- Context
- 1.0M
- Max out
- 128K
- Cache read
- $0.25/M
- Cache write ephemeral_5m_input_tokens
- $12.50/M
- Thinking out
- $50.00/M