Claude Opus 4.1 API pricing
As of October 21, 2026, Anthropic Claude Opus 4.1 costs $15.00 per million input tokens and $75.00 per million output tokens through OpenRouter, with cached input at $1.50 per million.
Claude Opus 4.1 benchmarks and specs · Every Anthropic model's price
- Input, per million tokens$15.00
- Output, per million tokens$75.00
- Cached input, per million$1.50
- Context window200K tokens
- Max output32K tokens
- Output speedNot measured
What a request costs
Three fixed token mixes at the list price, without cache or batch discounts. For a whole month, use the calculator.
| Workload | Tokens | One request | 1,000 requests | Fits the context window |
|---|---|---|---|---|
| Chat turn | 1K input + 500 output tokens | $0.052 | $52.50 | Yes |
| Repository review | 50K input + 3K output tokens | $0.975 | $975.00 | Yes |
| Agent loop | 200K input + 10K output tokens | $3.75 | $3750.00 | No, it would need splitting |
| Solved coding task | One SWE-bench Verified attempt, divided by the share that succeed | Not computable | Not computable |
Price history
We read this price every day and have since October 15, 2026. It has not changed yet; any change will be listed here with its date.
- October 15, 2026 First recorded: $15.00 input, $75.00 output
Cheaper models as good as Claude Opus 4.1
Models within two points of Claude Opus 4.1 or above it on the Artificial Analysis Intelligence Index, with a lower output price. Cheapest first.
- Ling 3.0 Flash VL$0.18 Overall 24.6 against 22.8 · 100% cheaper output
- DeepSeek V4 Flash 0423$0.182 Overall 24.4 against 22.8 · 100% cheaper output
- Solar Mini 4$0.20 Overall 24.1 against 22.8 · 100% cheaper output
- Ling 3.1 Flash$0.225 Overall 41.1 against 22.8 · 100% cheaper output
- MiMo-V2.5$0.238 Overall 21.8 against 22.8 · 100% cheaper output
Claude Opus 4.1 pricing questions
- How much does Claude Opus 4.1 cost per million tokens?
- $15.00 per million input tokens and $75.00 per million output tokens, as listed on OpenRouter on October 21, 2026.
- Does Claude Opus 4.1 support prompt caching?
- Yes. OpenRouter lists cached input at $1.50 per million tokens, against $15.00 for uncached input.
- Is there a cheaper model as good as Claude Opus 4.1?
- Ling 3.0 Flash VL scores 24.6 on the Artificial Analysis Intelligence Index, within two points of Claude Opus 4.1 or above it, and costs $0.18 per million output tokens.
- Has the price of Claude Opus 4.1 changed?
- Not since we started recording it daily on October 15, 2026.