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Anthropic Claude Sonnet 5.5 API pricing

Token prices on OpenRouter and at the provider’s list price, and what your own workload would cost per month.

Input
$2.00
Output
$10.00
Cached input
$0.20

OpenRouter, per 1M tokens. A dash means no listed price.

Your monthly cost

Your workload

90M input and 18M output tokens a month (30-day month; token counts are per request).

Assumes: 1,000 conversations a day, each sending about 3,000 tokens of history and instructions and receiving about 600 tokens of replies.

Input not in cache
$180
Output
$180
Total per month
$360
Per day
$12.00
Per request
$0.012
Unit
Currency

The share you mark as “from cache” is billed at this model’s published cache-read price. Cache-write charges are not included. Compare this bill with other models.

Every price, with its source

OpenRouter price, per 1M tokens

Input
$2.00
Output
$10.00
Cached input (read)90% below the input price
$0.20
Cache write
$2.50
Batch (input / output)
$1.00 / $5.00
Context window
1,000,000 tokens
Maximum output
128,000 tokens
Accepts
text, image, file
Reasoning mode
yes
Intelligence Indexby Artificial Analysis, relayed by OpenRouter
56
Listed since
28 Sep 2026

Provider list price, per 1M tokens

Input / output
$2.00 / $10.00
Cached input (read)
$0.20
Batch (input / output)
$1.00 / $5.00

As recorded in the LiteLLM price table under claude-sonnet-5-5, which cites the provider’s pricing page. It matches the OpenRouter price.

Collected from the OpenRouter models API (466 entries). 99 models are cross-checked against provider list prices in the LiteLLM price table.

About Claude Sonnet 5.5

Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fixing bugs, and producing...

Description supplied by OpenRouter. Model id for the API: anthropic/claude-sonnet-5.5

Claude Sonnet 5.5 against other models

Other Anthropic models

Questions and answers

How much does Anthropic Claude Sonnet 5.5 cost per million tokens?

At the collection of 3 Oct 2026, 08:40 UTC, OpenRouter listed Anthropic Claude Sonnet 5.5 at $2.00 per million input tokens and $10.00 per million output tokens. The provider list price recorded by LiteLLM is $2.00 for input and $10.00 for output.

What would Anthropic Claude Sonnet 5.5 cost per month?

For 1,000 requests a day with 3,000 input and 600 output tokens each, over a 30-day month and with no caching, the bill is $360. Change the numbers in the simulator on this page to match your own traffic.

Does Anthropic Claude Sonnet 5.5 have a cheaper price for cached input?

Yes. Cached input is listed at $0.20 per million tokens, 90% below the normal input price.

What is the context window of Anthropic Claude Sonnet 5.5?

1,000,000 tokens, with a maximum output of 128,000 tokens, as reported by OpenRouter.

Is there a batch price for Anthropic Claude Sonnet 5.5?

Yes. OpenRouter lists a batch variant at $1.00 per million input tokens and $5.00 per million output tokens, for requests that can wait for an asynchronous answer.

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