Anthropic model product
Claude Opus 4.1
1 is a hybrid reasoning model that pushes the frontier for coding and AI agents, featuring a 200K context window.
Updated Aug 12, 2026. Default version: Claude Opus 4.1
LLMBoard score52.4Claude Opus 4.1
Coverage80%8 benchmark families
Context window200KTokens
Official input priceN/AOfficial price unavailable
Claude Opus 4.1 Specifications
Technical details for the model's default version.
- Version
- Claude Opus 4.1
- Released
- Aug 5, 2025
- Knowledge cutoff
- Mar 31, 2025
- Parameters
- N/A
- Context window
- 200K
- Max output
- 32K
- Inputs
- image, pdf, text
- Outputs
- text
- Open weights
- No
- License
- Proprietary
Claude Opus 4.1 Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
Claude Opus 4.1 Benchmark Results
Benchmark scores for Claude Opus 4.1.
| MMMU (validation) | 0.8 | 2 | 4 | 66.7% | C | |
| TAU-bench Retail | 0.8 | 2 | 25 | 95.8% | C | |
| Terminal-Bench | 0.4 | 5 | 25 | 83.3% | C | |
| MMMLU | 0.9 | 10 | 49 | 81.3% | C | |
| TAU-bench Airline | 0.6 | 10 | 23 | 59.1% | C | |
| SWE-Bench Verified | 0.7 | 37 | 105 | 65.4% | C | |
| AIME 2025 | 0.8 | 74 | 114 | 35.4% | C | |
| GPQA | 0.8 | 84 | 234 | 64.4% | C |
Claude Opus 4.1 Arena Results
Preference and agent-evaluation results for the default version.
| search factuality | overall | 22 | 1153.6 | 60,046 | N/A | |
| search style control | overall | 22 | 1166.7 | 77,222 | N/A | |
| search | overall | 23 | 1147.6 | 77,222 | N/A | |
| text style control | overall | 62 | 1448.8 | 50,026 | N/A | |
| text style control | overall | 66 | 1447.1 | 77,785 | N/A | |
| webdev | overall | 66 | 1388.6 | 6,786 | N/A | |
| text factuality | overall | 85 | 1435.0 | 41,254 | N/A | |
| text factuality | overall | 91 | 1432.6 | 25,830 | N/A | |
| text | overall | 102 | 1418.2 | 50,026 | N/A | |
| text | overall | 104 | 1417.5 | 77,785 | N/A |
Claude Opus 4.1 Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- N/A
- Official provider
- N/A
- Lowest third-party
- From $13 input, $64 output per 1M via Poe
- Tracked offerings
- 24
| Poe | anthropic/claude-opus-4.1 | global | $13 | $64 | 196.6K | |
| Jiekou.AI | claude-opus-4-1-20250805 | global | $13.5 | $67.5 | 200K | |
| NanoGPT | claude-opus-4-1-20250805 | global | $15 | $75 | 200K | |
| FastRouter | anthropic/claude-opus-4.1 | global | $15 | $75 | 200K | |
| LLM Gateway | claude-opus-4-1-20250805 | global | $15 | $75 | 200K | |
| OpenCode Zen | claude-opus-4-1 | global | $15 | $75 | 200K | |
| 302.AI | claude-opus-4-1-20250805 | global | $15 | $75 | 200K | |
| Helicone | claude-opus-4-1-20250805 | global | $15 | $75 | 200K | |
| Neon | claude-opus-4-1 | global | $15 | $75 | 200K | |
| Pioneer | claude-opus-4-1 | global | $15 | $75 | 200K | |
| ZenMux | anthropic/claude-opus-4.1 | global | $15 | $75 | 200K | |
| Abacus | claude-opus-4-1-20250805 | global | $15 | $75 | 200K | |
| Azure Cognitive Services | claude-opus-4-1 | global | $15 | $75 | 200K | |
| Azure | claude-opus-4-1 | global | $15 | $75 | 200K | |
| Vertex (Anthropic) | claude-opus-4-1@20250805 | global | $15 | $75 | 200K | |
| OrcaRouter | anthropic/claude-opus-4.1 | global | $15 | $75 | 200K | |
| Vertex | claude-opus-4-1@20250805 | global | $15 | $75 | 200K | |
| Amazon Bedrock | anthropic.claude-opus-4-1-20250805-v1:0 | global | $15 | $75 | 200K | |
| Requesty | claude-opus-4-1 | global | $15 | $75 | 200K | |
| Kilo Gateway | anthropic/claude-opus-4.1 | global | $15 | $75 | 200K | |
| Merge Gateway | anthropic/claude-opus-4-1-20250805 | global | $15 | $75 | 200K | |
| OpenRouter | anthropic/claude-opus-4.1 | global | $15 | $75 | 200K | |
| Cloudflare AI Gateway | anthropic/claude-opus-4-1 | global | $15 | $75 | 200K | |
| Databricks | databricks-claude-opus-4-1 | global | $15 | $75 | 200K |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
Claude Opus 4.1 Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
| Claude Opus 4.1 | 52.4 | N/A | 200K | 32K | No | Proprietary |
What is Claude Opus 4.1?
Key information about Claude Opus 4.1 and its available data.
1 is a hybrid reasoning model that pushes the frontier for coding and AI agents, featuring a 200K context window. It delivers superior performance and precision for real-world coding and agentic tasks, handling complex multi-step problems with rigor and attention to detail.
With extended thinking capabilities, it offers instant responses or extended step-by-step thinking visible through user-friendly summaries. 5% on SWE-bench Verified, excels at agentic search and research, and produces human-quality content with exceptional writing abilities.
It supports 32K output tokens and adapts to specific coding styles while delivering exceptional quality for extensive generation and refactoring projects.
Data as of 2026-08-11.
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FAQ
Common questions about Claude Opus 4.1.
When was Claude Opus 4.1 released?
Claude Opus 4.1's default version was released on Aug 5, 2025.
How much does Claude Opus 4.1 cost?
No official standard PAYG price is currently available for Claude Opus 4.1. The lowest tracked third-party offer starts at $13 input and $64 output via Poe.
Who created Claude Opus 4.1?
Claude Opus 4.1 was created by Anthropic.
What is the context window for Claude Opus 4.1?
The default version has a 200K token context window.
Is Claude Opus 4.1 open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer Claude Opus 4.1?
24 provider offerings are linked to the default version.
What models should I compare Claude Opus 4.1 with?
Nearby ranked alternatives include Gemma 4 26B A4B, o3, Nova 2 Pro.