Claude Opus 4.1 pricing
Claude Opus 4.1 from Anthropic costs $15.00 per 1M input tokens and $75.00 per 1M output tokens. Cached input is $1.50 per 1M. Context window 200,000 tokens.
API id claude-opus-4.1 · Anthropic · source · updated 2026-08-11
$15.00
Input / 1M tokens
$75.00
Output / 1M tokens
$1.50
Cached input / 1M
200K
Context window
What Claude Opus 4.1 costs in practice
| Workload | Input tokens | Output tokens | Estimated cost |
|---|---|---|---|
| Short chat turn | 1,000 | 500 | $0.05 |
| Document summary | 50,000 | 2,000 | $0.90 |
| 1M tokens in, 200K out | 1,000,000 | 200,000 | $30.00 |
Estimates use the standard tier and ignore caching discounts, so real bills with repeated prompt prefixes are typically lower.
Common questions
- How much does Claude Opus 4.1 cost per 1M tokens?
- Claude Opus 4.1 costs $15.00 per 1M input tokens and $75.00 per 1M output tokens on the standard tier. Cached input is $1.50 per 1M.
- What is Claude Opus 4.1's context window?
- Claude Opus 4.1 accepts up to 200,000 tokens in a single request, and can return up to 32,000 output tokens.
- Is there a cheaper Claude model than Claude Opus 4.1?
- Yes. Claude Haiku 3.5 is $0.800 per 1M input tokens versus $15.00 for Claude Opus 4.1.
- Where does this Claude Opus 4.1 price come from?
- Directly from Anthropic's published pricing page, re-read every day and normalized to USD per 1,000,000 tokens.