Updated 9 Nov · updated in the last 30 hours

Anthropic Claude Fable 5.1 API Pricing

Anthropic Claude Fable 5.1 API pricing: $10.00 per 1M tokens for input and $50.00 per 1M tokens for output, from the official API price list of Anthropic. Official rate checked (source); OpenRouter is a separate channel below. Published OpenRouter: Last checked · Source (data) · Methodology

OpenRouter: Amount worked out from the source page: $10.00 per 1M tokens, in USD · as shown in the United States on 9 Nov 2026 · the page does not say whether tax is included; we do not assume it is excluded · no price change seen since 16 Oct 2026.

Data as of9 Nov 2026Prices checked 9 Nov 2026 · test requests to 8 Nov 2026Data & API
Task receipt: Direct API / OpenRouter: $1.74; Warm cache: $0.374; Published batch: $0.870 Same price on both channels Calculated · Document analysis Assumption: 3 steps; initial input 50,500 tokens; growth 2,500 tokens/step; visible output 1,000 tokens/step. Month: 14,600 tasks. No hidden reasoning or retries.
Task receipt.Same price on both channels Calculated · Document analysis Assumption: 3 steps; initial input 50,500 tokens; growth 2,500 tokens/step; visible output 1,000 tokens/step. Month: 14,600 tasks. No hidden reasoning or retries. Open image · Explore the chart · Measured Lab · CC BY 4.0
See cost receipt

Prices USD per 1M tokens, as listed

  • $10.00Input per 1M tokens, from Anthropic Published
  • $50.00Output per 1M tokens, from Anthropic Published
  • $0.25Cached input per 1M tokens, from Anthropic Published
All prices by channel
Price per 1M tokensAnthropic directThrough OpenRouterPrevious prices by channel
Input$10.00 Published$10.00 Published—
Output$50.00 Published$50.00 Published—
Cached input · read$0.25 Published$0.25 Published—
Cache write · 5-minute lifetime$12.50 Published——
Cache write · 1-hour lifetime$20.00 Published——
Cache writeUnknownUnknown$12.50 Published—
Batch · input / output—$5.00 / $25.00 Published—

Input price from Anthropic, 16 Oct 2026 – 9 Nov 2026

16 Oct 2026$10.00 throughout9 Nov 2026

Input price through OpenRouter, 16 Oct 2026 – 9 Nov 2026

16 Oct 2026$10.00 throughout9 Nov 2026

Context window1,000,000tokens Published
Max output128,000tokens Published

OpenRouter providers who serves this model through OpenRouter, at what price

OpenRouter sends a call without a pinned provider to one of these endpoints, and each endpoint has its own price. Prices are USD per 1M tokens, input / output.

Pinned min: $10.00 / $50.00 · Google (google-vertex/global)

Unpinned range: input $10.00–$10.00, output $50.00–$50.00 across 4 providers (listing shows $10.00 / $50.00).

Models with the widest provider price spread on OpenRouter

Request fragment that pins Google (google-vertex/global):

{"provider": {"order": ["google-vertex/global"], "allow_fallbacks": false}}

With fallbacks turned off, OpenRouter does not move the call to another provider. A full endpoint tag pins that endpoint; the provider name alone covers all of its endpoints (OpenRouter provider routing).

All endpoints (4), by input price
ProviderEndpoint tagPrecisionInputOutputContext, tokens
Amazon Bedrockamazon-bedrockNot stated$10.00$50.001,000,000
AnthropicanthropicNot stated$10.00$50.001,000,000
AzureazureNot stated$10.00$50.001,000,000
Googlegoogle-vertex/globalNot stated$10.00$50.001,000,000

Sorted by input price, then output price. Precision is the quantization field of the endpoints list.

What typical tasks cost with this model

TaskAt Anthropic's price ($10.00 / $50.00)Through OpenRouter ($10.00 / $50.00)
1,000 chat replies$25.00$25.00
Summarizing 100 documents$6.10$6.10
A day of coding assistant use$20.00$20.00

Calculated Prices per 1M tokens (input / output) in brackets; token counts and what is not included: our assumptions and the same tasks on other models.

How we got this number

  • What we read: the published price on openrouter.ai/api/v1/models
  • Checked: ; tracked since 16 Oct 2026
  • Shown in: the United States
  • Checks so far: 25 checks since 16 Oct 2026
  • What changed: no price change since 16 Oct 2026
  • Page updated:

Other measured facts

QuestionAnswerCheckedStatus
How much does Anthropic Claude Fable 5.1 cost per 1M cache-read tokens (cache hits) on OpenRouter?$0.25 per 1M tokensPublished
How much does Anthropic Claude Fable 5.1 cost per 1M cache-write tokens on OpenRouter?$12.50 per 1M tokensPublished
How much does Anthropic Claude Fable 5.1 cost per 1M output tokens on OpenRouter?$50.00 per 1M tokensPublished
How much does Claude Fable 5.1 cost per 1M cache-read tokens (cache hits) directly from Anthropic (official API price)?$0.25 per 1M tokensPublished
How much does Claude Fable 5.1 cost per 1M cache-write tokens with a 1-hour cache lifetime directly from Anthropic (official API price)?$20.00 per 1M tokensPublished
How much does Claude Fable 5.1 cost per 1M cache-write tokens with a 5-minute cache lifetime directly from Anthropic (official API price)?$12.50 per 1M tokensPublished
How much does Claude Fable 5.1 cost per 1M input tokens directly from Anthropic (official API price)?$10.00 per 1M tokensPublished
How much does Claude Fable 5.1 cost per 1M output tokens directly from Anthropic (official API price)?$50.00 per 1M tokensPublished
What is the context window of Anthropic Claude Fable 5.1 on OpenRouter, in tokens?1,000,000 tokensPublished
What is the maximum output length of Anthropic Claude Fable 5.1 on OpenRouter, in tokens?128,000 tokensPublished

History

Same price in all 25 checks since 16 Oct 2026.

  1. — First check: $10.00 per 1M tokens

The source record lists $0.00001 per token ($10.00 per 1M tokens), fetched on 9 Nov 2026.

The source record, as published
"prompt":"0.00001"
What the source says · openrouter.ai

Latest briefings each price change recalculated as a task cost

  1. DeepSeek V4 Pro 0813: price rise input $0.115 → $0.111 per 1M tokens (-3 %), output $4.00 → $4.44 per 1M tokens (+11 %)
  2. DeepSeek V4.1 Flash 1017: price cut input $0.300 → $0.0060 per 1M tokens (-98 %), output $1.20 → $0.500 per 1M tokens (-58 %)
  3. MoonshotAI Kimi K2.5: price rise input $0.500 → $0.532 per 1M tokens (+6 %), output $2.50 → $3.33 per 1M tokens (+33 %)

All briefings

Record history — 248 records for 11 questions
Last record
Shown in
the United States
How much does Anthropic Claude Fable 5.1 cost per 1M input tokens on OpenRouter?
TimeValueStatus
9 Nov 2026$10.00 per 1M tokensPublished
8 Nov 2026$10.00 per 1M tokensPublished
7 Nov 2026$10.00 per 1M tokensPublished
6 Nov 2026$10.00 per 1M tokensPublished
5 Nov 2026$10.00 per 1M tokensPublished
4 Nov 2026$10.00 per 1M tokensPublished
How much does Anthropic Claude Fable 5.1 cost per 1M cache-read tokens (cache hits) on OpenRouter?
TimeValueStatus
9 Nov 2026$0.25 per 1M tokensPublished
8 Nov 2026$0.25 per 1M tokensPublished
7 Nov 2026$0.25 per 1M tokensPublished
6 Nov 2026$0.25 per 1M tokensPublished
5 Nov 2026$0.25 per 1M tokensPublished
4 Nov 2026$0.25 per 1M tokensPublished
How much does Anthropic Claude Fable 5.1 cost per 1M cache-write tokens on OpenRouter?
TimeValueStatus
9 Nov 2026$12.50 per 1M tokensPublished
8 Nov 2026$12.50 per 1M tokensPublished
7 Nov 2026$12.50 per 1M tokensPublished
6 Nov 2026$12.50 per 1M tokensPublished
5 Nov 2026$12.50 per 1M tokensPublished
How much does Anthropic Claude Fable 5.1 cost per 1M output tokens on OpenRouter?
TimeValueStatus
9 Nov 2026$50.00 per 1M tokensPublished
8 Nov 2026$50.00 per 1M tokensPublished
7 Nov 2026$50.00 per 1M tokensPublished
6 Nov 2026$50.00 per 1M tokensPublished
5 Nov 2026$50.00 per 1M tokensPublished
How much does Claude Fable 5.1 cost per 1M cache-read tokens (cache hits) directly from Anthropic (official API price)?
TimeValueStatus
9 Nov 2026$0.25 per 1M tokensPublished
8 Nov 2026$0.25 per 1M tokensPublished
7 Nov 2026$0.25 per 1M tokensPublished
6 Nov 2026$0.25 per 1M tokensPublished
5 Nov 2026$0.25 per 1M tokensPublished
How much does Claude Fable 5.1 cost per 1M cache-write tokens with a 1-hour cache lifetime directly from Anthropic (official API price)?
TimeValueStatus
9 Nov 2026$20.00 per 1M tokensPublished
8 Nov 2026$20.00 per 1M tokensPublished
7 Nov 2026$20.00 per 1M tokensPublished
6 Nov 2026$20.00 per 1M tokensPublished
5 Nov 2026$20.00 per 1M tokensPublished
How much does Claude Fable 5.1 cost per 1M cache-write tokens with a 5-minute cache lifetime directly from Anthropic (official API price)?
TimeValueStatus
9 Nov 2026$12.50 per 1M tokensPublished
8 Nov 2026$12.50 per 1M tokensPublished
7 Nov 2026$12.50 per 1M tokensPublished
6 Nov 2026$12.50 per 1M tokensPublished
5 Nov 2026$12.50 per 1M tokensPublished
4 Nov 2026$12.50 per 1M tokensPublished
How much does Claude Fable 5.1 cost per 1M input tokens directly from Anthropic (official API price)?
TimeValueStatus
9 Nov 2026$10.00 per 1M tokensPublished
8 Nov 2026$10.00 per 1M tokensPublished
7 Nov 2026$10.00 per 1M tokensPublished
6 Nov 2026$10.00 per 1M tokensPublished
5 Nov 2026$10.00 per 1M tokensPublished
How much does Claude Fable 5.1 cost per 1M output tokens directly from Anthropic (official API price)?
TimeValueStatus
9 Nov 2026$50.00 per 1M tokensPublished
8 Nov 2026$50.00 per 1M tokensPublished
7 Nov 2026$50.00 per 1M tokensPublished
6 Nov 2026$50.00 per 1M tokensPublished
5 Nov 2026$50.00 per 1M tokensPublished
4 Nov 2026$50.00 per 1M tokensPublished
What is the context window of Anthropic Claude Fable 5.1 on OpenRouter, in tokens?
TimeValueStatus
9 Nov 20261,000,000 tokensPublished
8 Nov 20261,000,000 tokensPublished
7 Nov 20261,000,000 tokensPublished
6 Nov 20261,000,000 tokensPublished
5 Nov 20261,000,000 tokensPublished
4 Nov 20261,000,000 tokensPublished
What is the maximum output length of Anthropic Claude Fable 5.1 on OpenRouter, in tokens?
TimeValueStatus
9 Nov 2026128,000 tokensPublished
8 Nov 2026128,000 tokensPublished
7 Nov 2026128,000 tokensPublished
6 Nov 2026128,000 tokensPublished
5 Nov 2026128,000 tokensPublished

Showing the latest 60 of 248 records; the full history is in data.json and data.csv.

Download JSON Download CSV

Explore the numbers

Claude Fable 5.1

Same price on both channels

Direct API / OpenRouter$1.74Warm cache$0.374Published batch$0.870$0.00$0.50$1.00$1.50$2.00Direct API / OpenRouter$1.74Warm cache$0.374Published batch$0.870$0.00$0.50$1.00$1.50$2.00
Direct API / OpenRouter$25,404.00Warm cache$5,461.77Published batch$12,702.00$0$10,000$20,000$30,000Direct API / OpenRouter$25,404.00Warm cache$5,461.77Published batch$12,702.00$0$10,000$20,000$30,000

Calculated · Document analysis

Assumption: 3 steps; initial input 50,500 tokens; growth 2,500 tokens/step; visible output 1,000 tokens/step. Month: 14,600 tasks. No hidden reasoning or retries.

Warm-cache saving: $1.37 per task. Dashed outline: the no-cache bill.

Assumption: first-step cache fraction 75%; earlier context is read again and new context is written. All calls stay within the cache lifetime.

Formula: sum of input, output, cache reads and cache writes × their published rates / 1M. Each step uses its own context tier. Missing cache or batch prices are Unknown.

Fresh input · Visible output · Cache read · Cache write

Claude Fable 5.1

5-minute cache: pays back from 2 uses.

1-hour cache: pays back from 3 uses.

USD · Calculated$0.00$50.00$100.00123510Uses of the same prefixUSD · Calculated$0.00$50.00$100.00123510Uses of the same prefix

Fresh input · 5-minute cache · 1-hour cache

UsesFresh input5-minute cache1-hour cache
1$10.00$12.50$20.00
2$20.00$12.75$20.25
3$30.00$13.00$20.50
5$50.00$13.50$21.00
10$100.00$14.75$22.25

Assumption: the same 1M-token prefix, reused within the selected lifetime. Output excluded. Cached = one write + (uses − one) reads; fresh = uses × input rate.

Sources: this page; published model prices (data (JSON)); task assumptions (data (JSON)). Published prices · Observed responses · Calculated scenarios · Assumptions stated with each chart.