Anthropic
Claude Opus 4.1
Claude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks.
At a glance
- Input / 1M
- $15
- Output / 1M
- $75
- Context
- 200K
- Max output
- 32K
- Intelligence
- 22.8
- Released
- Aug 2025
Pricing
Claude Opus 4.1 API pricing
Per-token rates, plus what common tasks actually cost.
| Input tokensPer 1M tokens | $15 |
|---|---|
| Output tokensPer 1M tokens | $75 |
| Cached input (read)Per 1M tokens | $1.50 |
| Cache writePer 1M tokens | $18.75 |
| Web searchPer request | $0.01 |
Chat message
2K in, 500 out
$67.50
per 1,000 requests
Coding task
30K in, 4K out
$750
per 1,000 requests
Long document summary
150K in, 2K out
$2400
per 1,000 requests
Benchmarks
Claude Opus 4.1 benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
22.8
Coding index
Not available
Agentic index
Not available
Specs
Context window and capabilities
What it can read, what it can write, and which API features it supports.
- Context window
- 200K tokens
- Max output
- 32K tokens
- Input types
- File, Image, Text
- Output types
- Text
- Reasoning effort
- Not available
- Release date
- August 5, 2025
- Knowledge cutoff
- January 31, 2025
- Tool calling
- Structured outputs
- JSON mode
- Reasoning
- Temperature
- Stop sequences
- Deterministic seed
- Verbosity control
Compare
Claude Opus 4.1 vs other models
See how Claude Opus 4.1 stacks up head to head on price, benchmarks, and features.
VSClaude Opus 4.1 vs Claude Opus 4.6
Anthropic vs Anthropic
See comparisonVSClaude Opus 4.1 vs Claude Sonnet 4.6
Anthropic vs Anthropic
See comparisonVSClaude Opus 4.1 vs Claude Opus 4.5
Anthropic vs Anthropic
See comparisonVS
Claude Opus 4.1 vs GPT-5.1
Anthropic vs OpenAI
See comparisonVSClaude Opus 4.1 vs GPT-5.4 Mini
Anthropic vs OpenAI
See comparisonVSClaude Opus 4.1 vs GPT-5.1-Codex
Anthropic vs OpenAI
See comparisonMore Claude Opus 4.1 comparisons
Alternatives
Claude Opus 4.1 alternatives
Similar models worth considering, and where each one has the edge.
Anthropic
Claude Opus 4.6
Anthropic
Claude Sonnet 4.6
Anthropic
Claude Opus 4.5
Want to learn about other models? Browse all models
FAQ
Frequently asked questions
How much does Claude Opus 4.1 cost?
Claude Opus 4.1 costs $15 per 1M input tokens and $75 per 1M output tokens through the API. A typical chat message costs about $67.50 per 1,000 messages.
What is the context window of Claude Opus 4.1?
Claude Opus 4.1 accepts up to 200K tokens of input and can write up to 32K tokens in a single response.
What is the best alternative to Claude Opus 4.1?
Claude Opus 4.6 from Anthropic is a strong alternative. It offers: 3.0x cheaper output, higher intelligence score, larger 1m context.
Can I use Claude Opus 4.1 alongside other models?
Yes. Shortcut Chat sends one prompt to Claude Opus 4.1 and any other models you pick at the same time, so you can compare answers side by side.
Try Claude Opus 4.1 next to every other model.
Use Claude Opus 4.1 alongside all the other models. Use one at a time, or multiple together. Get the best answer from every AI.