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LLM Gateway

  • LLM Gateway
  • Request Routing
  • Usage Monitoring
  • Spend Management
  • Data Security
  • Access Controls

Features

  • Universal API Keys
  • BYOK
  • Spend Tracking
  • Token Allocation
  • Usage Analytics
  • Request Logs
  • Alerts
  • Data Redaction
  • Zero Data Retention
  • Audit Logs

Teams

  • AI Engineering
  • Engineering Leadership
  • Finance & Operations
  • Security & Compliance

Integrations

  • All Integrations
  • Migration Guides

Platform

  • Pricing
  • Model Fortress
  • Enterprise
  • Documentation
  • Status

Legal

  • Privacy Policy
  • Terms of Service
  • Data Processing Addendum
  • Acceptable Use Policy
  • Trust Center

Offices

New York

130 E 59th St, 17th floor

New York, NY 10022

Wilmington

1201 N. Market Street, Suite 200

Wilmington, DE 19801

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Claude Fable 5.1

Anthropic
claude-fable-5-1
Released Sep 1, 2026
Chat
Providers
3
Context
1.0M
Input
$10.00/M
Output
$50.00/M
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.

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.

Anthropic

anthropic/claude-fable-5-1
1.0M context128K max out
Input Price
$10.00/M tokens
Output Price
$50.00/M tokens
Cache read: $0.25/MCache write: (ephemeral_5m_input_tokens) $12.50/MCache write: (ephemeral_1h_input_tokens) $20.00/MWeb search $10.00/1K searches

Google Vertex AI

vertex/claude-fable-5-1
1.0M context128K max out
Input Price
$10.00/M tokens
Output Price
$50.00/M tokens
Cache read: $0.25/MCache write: (ephemeral_5m_input_tokens) $12.50/MCache write: (ephemeral_1h_input_tokens) $20.00/MWeb search $10.00/1K searches

Azure

azure/claude-fable-5-1
1.0M context128K max out
Input Price
$10.00/M tokens
Output Price
$50.00/M tokens
Cache read: $0.25/MCache write: (ephemeral_5m_input_tokens) $12.50/MCache write: (ephemeral_1h_input_tokens) $20.00/MWeb search $10.00/1K searches
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