Ways to buy 4
| Way to buy | Input | Output | In / out per 1M | Cached | Vs list |
|---|---|---|---|---|---|
 Anthropic APIThe lab's own API · cached $0.25 | $10 | $50 | $10 / $50List price | $0.25 | List price |
 AWS BedrockDefault region · cached $0.25 | $10 | $50 | $10 / $50Same as list | $0.25 | Same as list |
 Azure AI FoundryDefault region · cached $0.25 | $10 | $50 | $10 / $50Same as list | $0.25 | Same as list |
 Google Vertex AIglobal · cached $0.25 | $10 | $50 | $10 / $50Same as list | $0.25 | Same as list |
USD per 1M tokens; batch $5 in, $25 out on the lab's API. Regions are separate routes.
Through a gateway
Your own numbers100M input and 20M output tokens a month: $2,000 direct.
Helicone$2,000+0%
Kong AI Gateway$2,000+0%
LiteLLM$2,000+0%
Vercel AI Gateway$2,000+0%
Cloudflare AI Gateway$2,100+5%
Requesty$2,100+5%
Eden AI$2,110+5.5%
OpenRouter$2,110+5.5%
No published token fee: Martian Gateway, Portkey, TrueFoundry AI Gateway.
Related models
| In / out per 1M | Cheapest route | ||||||
|---|---|---|---|---|---|---|---|
| Claude Opus 5.5 Anthropic · 1M | $4 | $20 | $4 / $20 | $8 | 1M | Lab list price | · |
| Claude Opus 5 Anthropic · 1M | $5 | $25 | $5 / $25 | $10 | 1M | Lab list price | · |
| Claude Sonnet 5 Anthropic · 1M | $2 | $10 | $2 / $10 | $4 | 1M | Lab list price | · |
| Claude Fable 5 Anthropic · 1M | $10 | $50 | $10 / $50 | $20 | 1M | Lab list price | · |
 GPT-6 AstraOpenAI · 1.05MCheapest: $10 on OpenAI (flex) | $10 | $50 | $10 / $50 | $20 | 1.05M | $10 on OpenAI (flex) | · |
| GPT-5.5 OpenAI · 1.05MCheapest: $5.63 on OpenAI (flex) | $5 | $30 | $5 / $30 | $11.3 | 1.05M | $5.63 on OpenAI (flex) | · |
| o3 Pro OpenAI · 200K | $20 | $80 | $20 / $80 | $35 | 200K | Lab list price | · |
| GPT-6 Astra Pro OpenAI · 1.05MCheapest: $10 on OpenAI (flex) | $10 | $50 | $10 / $50 | $20 | 1.05M | $10 on OpenAI (flex) | · |
About Claude Fable 5.1
Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual...
Takes text, image, files in and returns text. First listed Sep 2, 2026. Up to 128K output tokens. Blended price $20 per 1M tokens at 3 input to 1 output. Overall score 57 on leadersboard.fru.dev (rank 1). Model id claude-fable-5-1.
Price history
List price since Sep 2, 2026, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.
Questions
How much does Claude Fable 5.1 cost?
$10 per million input tokens and $50 per million output tokens, with cached input at $0.25, or $5 and $25 through the Batch API.
What is the context window of Claude Fable 5.1?
1M tokens, with up to 128K tokens of output.
Where is Claude Fable 5.1 cheapest?
Of 4 routes tracked, AWS Bedrock is cheapest at $10 input and $50 output per million tokens.
Sources: OpenRouter's public model catalog and each provider's own pricing page, read every morning at 05:00 UTC; gateway fees re-read every Monday. List prices: your contract may differ. Logos via logo.dev; trademarks belong to their owners.