Anthropic: Claude Sonnet 4.5 API Pricing
Live token cost for Anthropic: Claude Sonnet 4.5 from Anthropic. Use the figures below for budgeting, then tune your exact request mix in the interactive calculator. Prices refresh every 24 hours from OpenRouter.
Capabilities
Anthropic: Claude Sonnet 4.5 cost at scale
Estimated monthly cost across common production volumes. Assumes 30-day months and the request shapes shown.
| Tier | Requests / day | In / out tokens | $ / month |
|---|---|---|---|
| Hobby | 1,000 | 500 / 200 | $135.00 |
| Startup | 10,000 | 1,500 / 500 | $3,600.00 |
| Growth | 100,000 | 3,000 / 800 | $63,000.00 |
| Enterprise | 1,000,000 | 8,000 / 2,000 | $1,620,000.00 |
| Enterprise (batch mode) | 1,000,000 | 8,000 / 2,000 | $810,000.00 |
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Frequently asked questions
How much does Anthropic: Claude Sonnet 4.5 cost?
Anthropic: Claude Sonnet 4.5 costs $3.00 per 1M input tokens and $15.00 per 1M output tokens, with cached input at $0.30 per 1M tokens. A typical 1,500-token in / 500-token out request costs $0.012.
Does Anthropic: Claude Sonnet 4.5 support cached input?
Yes. Anthropic: Claude Sonnet 4.5 supports prompt caching at $0.30 per 1M cached input tokens. Reuse the same system prompt or context across requests to cut input cost dramatically.
What is the Anthropic: Claude Sonnet 4.5 context window?
Anthropic: Claude Sonnet 4.5 supports a context window of 1,000,000 tokens (1000K). Max output per response is 64,000 tokens.
What is Anthropic: Claude Sonnet 4.5 good for?
Anthropic: Claude Sonnet 4.5 is a good fit for high-quality production tasks at moderate cost — coding, writing, classification. For other use cases, run your specific input/output mix through the interactive calculator to compare against alternative models.