Claude Sonnet 4.5 API Pricing
Mid-tier · 200K context · $3 per 1M input tokens, $15 per 1M output tokens.
Claude Sonnet 4.5 pricing
| Provider | Input /1M | Output /1M | In+Out |
|---|---|---|---|
| Anthropic | $3 | $15 | $18 |
Prices per 1M tokens, USD. Snapshot 2026-07 — verify with the provider before relying on them.
Claude Sonnet 4.5 cost calculator
Frequently asked
How much does Claude Sonnet 4.5 cost per 1M tokens?
Claude Sonnet 4.5 costs $3 per 1M input tokens and $15 per 1M output tokens from Anthropic.
What is Claude Sonnet 4.5's context window?
Claude Sonnet 4.5 supports a context window of about 200K tokens. Remember every token in the context is billed on each call.
Is Claude Sonnet 4.5 available on other providers?
Claude Sonnet 4.5 is offered by Anthropic. For open-weight alternatives you can host on multiple providers, see the full model comparison.