Claude Fable 5 pricing & benchmarks
Claude Fable 5 is available from Anthropic at $10.00 per million input tokens and $50.00 per million output tokens ($20.00 blended at 3:1). It accepts up to 1,000,000 tokens of context. Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. It supports text, image, and file inputs with text output, with reasoning support and...
Pricing
Per million tokens · OpenRouter
Input$10.00
Output$50.00
Blended (3:1)$20.00
Specification
anthropic/claude-fable-5
Context window1M
Max output128K
ReleasedJun 2026
LicenceProprietary
Modalitiesin:text, in:image, in:file, out:text
Benchmarks
Independently run — not vendor self-reports. Every score links its source.
| Benchmark | Score | Config | Run | Source |
|---|---|---|---|---|
| GPQA Diamond | 85.9% ±2.5 | max effort | 2026-08-06 | Independently run · Epoch AI |
| FrontierMath T1–3 | 87.0% ±2.0 | max effort | 2026-06-09 | Independently run · Epoch AI |
| FrontierMath T4 | 90.2% ±4.6 | max effort | 2026-06-09 | Independently run · Epoch AI |
| OTIS Mock AIME | 100.0% | high effort | 2026-08-06 | Independently run · Epoch AI |
Scores published by Epoch AI, 'AI Benchmarking Hub', used under CC BY 4.0.
Cheaper models that score at least as well on GPQA Diamond
Strictly lower blended price AND an equal-or-higher GPQA Diamond score. One benchmark is one dimension — a model that wins here may still be weaker at your specific task.
| Model | Provider | Blended $/1M | GPQA Diamond | |
|---|---|---|---|---|
| GPT-5.6 Luna | OpenAI | $0.450 (−98%) | 91.6% | Compare → |
| MiniMax M3 | MiniMax | $0.525 (−97%) | 90.9% | Compare → |
| Qwen3.7 Plus | Alibaba | $0.560 (−97%) | 87.9% | Compare → |
| Inkling Small | Thinkingmachines | $0.637 (−97%) | 88.5% | Compare → |
| DeepSeek V4 Flash 0731 | DeepSeek | $0.660 (−97%) | 91.0% | Compare → |
Where to run Claude Fable 5
6 options across 5 providers · 1.1× between cheapest and dearest. Blended at 3:1. ⚠ marks an option serving less context than the best available, or re-pricing above a prompt-length threshold. Bracketed labels are the provider's own service tier or region.
| Host | Blended $/1M | In / Out | Context | Uptime 24h |
|---|---|---|---|---|
| Claude Platform on AWS | $20.00 | $10.00 / $50.00 | 1M | 100.0% |
| Azure | $20.00 | $10.00 / $50.00 | 1M | 100.0% |
| Amazon Bedrock | $20.00 | $10.00 / $50.00 | 1M | — |
| Google (global) | $20.00 | $10.00 / $50.00 | 1M | 100.0% |
| Anthropic | $20.00 | $10.00 / $50.00 | 1M | 100.0% |
| Google (europe) | $22.00 | $11.00 / $55.00 | 1M | 100.0% |
Host prices and uptime from OpenRouter, synced 2026-10-22.
Compare Claude Fable 5
FAQ
How much does Claude Fable 5 cost?
Claude Fable 5 costs $10.00 per million input tokens and $50.00 per million output tokens on OpenRouter. At a 3:1 input:output mix that blends to $20.00 per million tokens.
What is Claude Fable 5's context window?
Claude Fable 5 accepts up to 1,000,000 tokens of context, and can generate up to 128,000 output tokens.
How good is Claude Fable 5 on benchmarks?
Claude Fable 5 scores 85.9% on GPQA Diamond, independently run and published by Epoch AI. 4 benchmark results are listed on this page, each with its run date and source.
Is there a cheaper model as good as Claude Fable 5?
Yes — 5 models in our catalogue cost less per token than Claude Fable 5 and score at least as high on the same benchmark. The cheapest is GPT-5.6 Luna at $0.450 per million tokens blended.