How much does Claude Fable 5.1 cost per million tokens?

$10.00 per million input tokens and $50.00 per million output tokens, as listed on OpenRouter on October 22, 2026.

Does Claude Fable 5.1 support prompt caching?

Yes. OpenRouter lists cached input at $0.25 per million tokens, against $10.00 for uncached input.

Is there a cheaper model as good as Claude Fable 5.1?

Gemini 4 Argon scores 84.0 on the LLMBenchmark Index, within two points of Claude Fable 5.1 or above it, and costs $10.00 per million output tokens.

Has the price of Claude Fable 5.1 changed?

Not since we started recording it daily on October 21, 2026.

Claude Fable 5.1 API pricing

As of October 22, 2026, Anthropic Claude Fable 5.1 costs $10.00 per million input tokens and $50.00 per million output tokens on Anthropic's own API, with cached input at $0.25 per million.

Claude Fable 5.1 benchmarks and specs · Every Anthropic model's price

Input, per million tokens$10.00
Output, per million tokens$50.00
Cached input, per million$0.25
Context window1M tokens
Max output128K tokens
Output speed70 tok/s

What a request costs

Three fixed token mixes at the list price, without cache or batch discounts. For a whole month, use the calculator.

Cost of three workloads on Claude Fable 5.1
Workload	Tokens	One request	1,000 requests	Fits the context window
Chat turn	1K input + 500 output tokens	$0.035	$35.00	Yes
Repository review	50K input + 3K output tokens	$0.650	$650.00	Yes
Agent loop	200K input + 10K output tokens	$2.50	$2500.00	Yes
Solved coding task	One SWE-bench Verified attempt, divided by the share that succeed	Not computable	Not computable

Price history

We have read Anthropic's own price every day since October 21, 2026. It has not changed yet; any change will be listed here with its date.

October 21, 2026 First recorded: $10.00 input, $50.00 output

Cheaper models as good as Claude Fable 5.1

Models within two points of Claude Fable 5.1 or above it on the LLMBenchmark Index, with a lower output price. Cheapest first.

Claude Fable 5.1 pricing questions

How much does Claude Fable 5.1 cost per million tokens?: $10.00 per million input tokens and $50.00 per million output tokens, as listed on OpenRouter on October 22, 2026.
Does Claude Fable 5.1 support prompt caching?: Yes. OpenRouter lists cached input at $0.25 per million tokens, against $10.00 for uncached input.
Is there a cheaper model as good as Claude Fable 5.1?: Gemini 4 Argon scores 84.0 on the LLMBenchmark Index, within two points of Claude Fable 5.1 or above it, and costs $10.00 per million output tokens.
Has the price of Claude Fable 5.1 changed?: Not since we started recording it daily on October 21, 2026.