Claude Fable 5.1: API pricing, context window and capabilities

Prices from official vendor price lists · October 2026

Claude Fable 5.1 costs $10 per 1M input tokens and $50 per 1M output tokens, with a 1M context window. Top of Anthropic’s range and dearer than 98% of this rating. Worth it when the first answer has to be right — Claude Opus 5 handles routine work for about 2× less.

Visit AnthropicAll Anthropic models
Capabilities
Text & chatVisionReasoning
API $/1M (in / out)
$10 / $50
Context window
1M tokens
Price / mo
API only
OverviewReviews

Claude Fable 5.1 is an AI model from Anthropic, priced at $10 input and $50 output per 1M tokens. That places it in the frontier tier of this rating — dearer than 98% of the 205 priced models listed.

It holds 1M tokens in a single conversation, enough for a full codebase or a contract bundle in one pass. Capabilities recorded in this rating: text & chat, vision, reasoning, adjustable thinking, tool calling. Access is through the API rather than a consumer subscription.

API price$10 / $50per 1M tokens, in / out
Context1M tokenstokens per conversation
VendorAnthropicall models from this vendor
TierFrontierdearer than 98% of models

Cost calculator

Standard$40.00AED 147 per month
With batch −50%$20.00AED 73 per month
With caching on input$37.75AED 139 per month
Standard$400AED 1,469 per month
With batch −50%$200AED 735 per month
With caching on input$378AED 1,386 per month
Standard$2,000AED 7,345 per month
With batch −50%$1,000AED 3,673 per month
With caching on input$1,888AED 6,932 per month
Standard$8,000AED 29,380 per month
With batch −50%$4,000AED 14,690 per month
With caching on input$7,550AED 27,727 per month

Assumes a 1:3 input-to-output ratio, which is typical for chat and generation. Dirham figures use 3.6725 per dollar. Batch and caching discounts apply where the vendor offers them.

Compared with alternatives

How Claude Fable 5.1 sits against its neighbours in this rating. Tap a card to open that model.

GPT-5.5
Cheaper
OpenAI
$5 / $301.05M tokens
GPT-6 Astra
Closest match
OpenAI
$10 / $501.05M tokens
GPT-5.5 Pro
Step up
OpenAI
$30 / $1801.05M tokens

Good and poor fit

Good fit
  • Multi-step analysis, planning and code review, where the first plausible answer is often wrong.
  • Reading screenshots, charts, scanned documents and photos.
  • Whole codebases, contract bundles and long transcripts in a single pass.
Poor fit
  • Classification, routing and short summaries — a small model does these identically for a fraction of the price.

Related filters

Text & chat234 models for text generation and chat
Vision159 models that read images
Reasoning175 models that think before answering
Adjustable thinking85 models with a reasoning depth dial
Tool calling172 models that call your functions
Anthropic13 models from this vendor
All 245 modelsThe full rating with filters and prices

Frequently asked questions

How much does Claude Fable 5.1 cost?

$10 / $50 per 1M tokens, input and output. In dirhams that is roughly AED 36.73 per 1M input tokens. Batch processing halves it where the vendor offers it.

What is the context window of Claude Fable 5.1?

1M tokens in a single conversation.

What can Claude Fable 5.1 do?

In this rating it is recorded with: text & chat, vision, reasoning, adjustable thinking, tool calling, structured JSON output, code execution, long context 1M+, prompt caching, batch API, priority / fast tier, multilingual, proprietary API.

Is Claude Fable 5.1 a good choice?

It depends on the job. See the good-fit and poor-fit lists above, and compare against the neighbouring models before committing.

Frequently searched

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