← Back to all pricing

Claude Sonnet 4 API Pricing — $3.00/M input, $15.00/M output

The 2025 standard: exceptional reasoning and safety, now superseded by 4.6.

Legacy model — superseded by Sonnet 4.6 See Claude Sonnet 4.6 pricing.
No announced shutdown date. Source · Migration guide · Full retirement tracker
Input
$3.00/M
Output
$15.00/M
Blended
$6.00/M
Provider
Verified 2026-04-06source

Speed

Not yet measured — see the speed benchmark leaderboard for models we do track.

Cost at scale

Tokens / monthEst. cost (blended 3:1)
100,000$0.60
1,000,000$6.00
10,000,000$60.00
100,000,000$600.00

How Claude Sonnet 4 compares

Claude Haiku 4.5$2.00/MClaude Sonnet 4.6$6.00/MClaude Sonnet 4.5$6.00/MClaude Opus 4.8$10.00/MClaude Opus 4.7$10.00/MClaude Sonnet 4.6$6.00/MClaude Sonnet 4.5$6.00/MGPT-5.4$5.63/M
See all Anthropic models →

Head-to-head comparisons

Claude Sonnet 4 vs Claude Sonnet 4.6

FAQ

Is Claude Sonnet 4 cheaper than Claude Sonnet 4.6?

Claude Sonnet 4 costs $6.00/M blended tokens, Claude Sonnet 4.6 costs $6.00/M — Claude Sonnet 4.6 is cheaper.

How much does 1 million tokens cost with Claude Sonnet 4?

At a 3:1 input:output ratio, 1 million blended tokens costs approximately $6.00. Pure input costs $3.00/M; pure output costs $15.00/M.

Who provides Claude Sonnet 4?

Claude Sonnet 4 is served by Anthropic. Pricing was last verified on 2026-04-06 against https://www.anthropic.com/pricing.

Try Claude Sonnet 4 for free

Run real prompts against Claude Sonnet 4 and every other model on this page in one workspace.

Try Claude Sonnet 4 Free