Claude Fable 5
Claude Fable 5 is Anthropic's most capable widely released model, built for the most demanding reasoning and long-horizon agentic work. Claude Fable 5 runs long, complex, and asynchronous tasks with fewer check-ins and is available on AI Gateway via anthropic, vertexAnthropic with adaptive thinking and configurable effort.
ReasoningTool UseExplicit CachingFile InputVision (Image)
index.ts
import { streamText } from 'ai'
const result = streamText({ model: 'anthropic/claude-fable-5', prompt: 'Why is the sky blue?'})Providers
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| Provider |
|---|
 Anthropic | 1M | 7.0s | 86tps | $10.00/M | $50.00/M | Read:$1/M Write: $12.5/M | $10/K + input costs | — | +3 | 07/01/2026 | ||
 Google Vertex AI | 1M | 1.9s | 92tps | $10.00/M | $50.00/M | Read:$1/M Write: $12.5/M | $10/K + input costs | — | +3 | 07/01/2026 |