Skip to content
CountMyToken

Anthropic

Claude Sonnet 4.5 costs $3.00 in and $15.00 out.

Older model text price, per million tokens, checked 23 October 2026. Cached input is $0.30 per million. Context window: Not listed.

Still listed with a price. The 1 million token window is stated for Claude 4.6 and later, so this context window is left blank.

Input
$3.00
Output
$15.00
Cached read
$0.30

Tell me when Claude Sonnet 4.5’s price changes

We’ll email a confirmation link. After you confirm, we write when this model’s listed price changes, and for that purpose only. You can remove the address here.

Anthropic pricing page · AI model prices

Price history, US dollars per million tokens
23 October 2026

Input $3.00Output $15.00

History starts with the snapshot checked on 23 October 2026. Earlier prices are left out unless an official page confirmed them.

Monthly cost

$13.50 a month with Claude Sonnet 4.5.

A month is 30 days. Prices last checked 23 October 2026.

The link stores these numbers. It does not store pasted text.

Claude Sonnet 4.5

Older model

$13.50 a month

$0.009 for one request, and $0.45 a day at 50 requests a day.

Show the maths
  • New input: 1,000 tokens × $3.00 per million = $0.003
  • Output: 400 tokens × $15.00 per million = $0.006
  • 1,500 requests a month × $0.009 = $13.50

  • Caching half the input would save about $2.03 a month

    That uses the published cache-read price of $0.30 per million tokens. It assumes half of these input tokens are already in a cache. Writing the cache can cost extra, and that write price is not included.

  • Batch processing would save about $6.75 a month

    Anthropic's Batch API is half price on input and output. Cache discounts stack with that. Batch jobs are slower, and they suit work that can wait.

  • Claude Sonnet 5.5 would cost about $4.50 less a month

    It is a cheaper model in the same broad class on this price list. It is still a different model, and the replies will not match.

  • A reply half as long would save about $4.50 a month

    Output tokens are often the expensive part. Asking for a shorter answer cuts that cost directly.

Tell me when Claude Sonnet 4.5’s price changes

We’ll email a confirmation link. After you confirm, we write when this model’s listed price changes, and for that purpose only. You can remove the address here.

Cached prices here are read prices. Writing a cache can cost extra, and that write price is on the provider’s page, not in this total. A US-only endpoint is 1.1× at some providers and is not included. Fast modes are not included.

How much does Claude Sonnet 4.5 cost?

Claude Sonnet 4.5 is $3.00 per million input tokens and $15.00 per million output tokens on the standard price checked on the provider’s page. Cached input, meaning tokens already stored and read back, is $0.30 per million tokens.

What is the context window for Claude Sonnet 4.5?

A context window was not confirmed on the pages checked, so it is left blank rather than guessed.

Where does the Claude Sonnet 4.5 price come from?

The figures were read from Anthropic’s pricing page on 23 October 2026: https://platform.claude.com/docs/en/about-claude/pricing. If that page has changed since, the page is ahead of this site until the snapshot is updated.