Model specification · Anthropic
Claude Opus 4.1
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. It achieves 74.5% on SWE-bench Verified and shows notable gains...
SpecificationsReported values
- Context window
- 200K
- Maximum output
- 32K
- Architecture
- text+image+file->text
- Tokenizer
- Claude
- Knowledge cutoff
- 2025-01-31
- Moderated
- Yes
- Input modalities
- imagetextfile
- Output modalities
- text
Full pricingUSD where reported
| Price | Standard |
|---|---|
| Input | $15.00 / M |
| Output | $75.00 / M |
Benchmark indexesReported indexes
- Intelligence
- 22.8
- Coding
- —
- Agentic
- —
- Design Arena Elo
- 1166
Example workload costsStandard pricing only
| Workload | Input / output | Cache share | Estimated cost |
|---|---|---|---|
| Quick check | 10K / 1K × 1 | 0% | $0.225 |
| Long analysis | 100K / 4K × 1 | 50% | $1.13 |
| Workday | 20K / 2K × 1,000 | 30% | $369.00 |
More from AnthropicAll Anthropic models
| Model | Context | Input / M | Output / M | Intel. |
|---|---|---|---|---|
| Claude Opus 5.5 | 1M | $4.00 | $20.00 | 57.6 |
| Claude Sonnet 5.5 | 1M | $2.00 | $10.00 | 56 |
| Claude Fable 5.1 | 1M | $10.00 | $50.00 | 53.4 |
| Claude Opus 5 | 1M | $5.00 | $25.00 | 50.8 |
| Claude Fable 5 | 1M | $10.00 | $50.00 | 49.6 |
| Claude Haiku 5.5 | 1M | $0.100 | $0.500 | 43.4 |
| Claude Opus 4.8 | 1M | $5.00 | $25.00 | 41.8 |
| Claude Opus 4.7 | 1M | $5.00 | $25.00 | 40.7 |
| Claude Sonnet 5 | 1M | $2.00 | $10.00 | 38.2 |
| Claude Opus 4.6 | 1M | $5.00 | $25.00 | 31.9 |
| Claude Sonnet 4.6 | 1M | $3.00 | $15.00 | 30.1 |
| Claude Opus 4.5 | 200K | $5.00 | $25.00 | 29.1 |