#129
AN
Claude Haiku 3
Anthropic
34.1 LLMBoard
Anthropic model product
Claude Opus 4.1 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. It advances state-of-the-art coding performance to 74.5% 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.
Updated Aug 10, 2026. Default version: Claude Opus 4.1
Structured fields from the published default version.
This profile uses the latest version under this unique model that has a calculated LLMBoard score. Arena and price are excluded.
No published version under this unique model currently has enough benchmark coverage to calculate a score.
Published benchmark records for the scored version currently unavailable.
No published benchmark result is linked to the scored version.
Preference and agent-evaluation signals from published Arena datasets.
| text factuality | spanish | 32 | 1445.2 | 535 | N/A | |
| text style control | spanish | 35 | 1464.0 | 1,991 | N/A | |
| text factuality | creative writing | 41 | 1438.9 | 3,380 | N/A | |
| text factuality | coding | 42 | 1504.8 | 5,037 | N/A | |
| text style control | instruction following | 42 | 1455.0 | 20,287 | N/A | |
| text style control | longer query | 43 | 1472.4 | 17,695 | N/A | |
| text style control | creative writing | 44 | 1441.9 | 10,690 | N/A | |
| text factuality | longer query | 45 | 1466.6 | 6,703 | N/A | |
| text | coding | 47 | 1472.9 | 15,507 | N/A | |
| text factuality | instruction following | 47 | 1447.1 | 7,048 | N/A | |
| text factuality | polish | 47 | 1391.7 | 832 | N/A | |
| text factuality | french | 48 | 1456.2 | 451 | N/A | |
| text style control | industry entertainment and sports and media | 49 | 1433.3 | 14,062 | N/A | |
| text style control | coding | 51 | 1505.0 | 15,507 | N/A | |
| text | instruction following | 52 | 1433.8 | 20,287 | N/A | |
| text style control | industry writing and literature and language | 52 | 1443.7 | 17,182 | N/A | |
| text style control | russian | 52 | 1454.5 | 5,716 | N/A | |
| text | longer query | 53 | 1445.3 | 17,695 | N/A | |
| text factuality | industry writing and literature and language | 53 | 1434.8 | 5,670 | N/A | |
| text style control | hard prompts | 53 | 1477.3 | 38,839 | N/A | |
| text style control | hard prompts english | 53 | 1482.3 | 19,314 | N/A | |
| text style control | multi turn | 53 | 1468.3 | 13,238 | N/A | |
| text style control | polish | 53 | 1450.0 | 3,611 | N/A | |
| text factuality | industry entertainment and sports and media | 55 | 1421.0 | 4,427 | N/A | |
| text factuality | math | 55 | 1434.2 | 1,365 | N/A | |
| text factuality | russian | 56 | 1450.6 | 1,963 | N/A | |
| text | spanish | 57 | 1444.4 | 1,991 | N/A | |
| text style control | industry medicine and healthcare | 57 | 1473.6 | 4,316 | N/A | |
| text factuality | multi turn | 58 | 1459.5 | 4,292 | N/A | |
| text factuality | hard prompts | 60 | 1468.4 | 21,229 | N/A | |
| text style control | korean | 60 | 1401.1 | 1,527 | N/A | |
| text factuality | hard prompts english | 62 | 1475.8 | 6,780 | N/A | |
| text | creative writing | 63 | 1410.2 | 10,690 | N/A | |
| text | industry writing and literature and language | 64 | 1417.2 | 17,182 | N/A | |
| text factuality | industry software and it services | 66 | 1479.3 | 10,203 | N/A | |
| text style control | overall | 66 | 1447.1 | 77,192 | N/A | |
| text style control | english | 66 | 1457.4 | 36,284 | N/A | |
| text style control | industry legal and government | 66 | 1457.8 | 5,258 | N/A | |
| text style control | industry software and it services | 66 | 1485.7 | 26,284 | N/A | |
| webdev | overall | 66 | 1388.6 | 6,737 | N/A | |
| webdev | webdev | 66 | 1388.6 | 6,737 | N/A | |
| text | hard prompts english | 67 | 1449.6 | 19,314 | N/A | |
| text factuality | expert | 67 | 1461.9 | 1,280 | N/A | |
| text factuality | industry mathematical | 67 | 1426.8 | 1,147 | N/A | |
| text style control | japanese | 67 | 1404.6 | 1,045 | N/A | |
| webdev | webdev-html | 67 | 1398.0 | 6,721 | N/A | |
| text style control | exclude ties | 68 | 1447.5 | 55,676 | N/A | |
| text style control | non english | 68 | 1432.0 | 40,860 | N/A | |
| text style control | french | 69 | 1462.2 | 1,273 | N/A | |
| text style control | industry business and management and financial operations | 69 | 1445.9 | 13,917 | N/A | |
| text style control | industry life and physical and social science | 69 | 1463.8 | 12,066 | N/A | |
| text | multi turn | 70 | 1441.7 | 13,238 | N/A | |
| text style control | german | 71 | 1439.0 | 1,473 | N/A | |
| text | hard prompts | 73 | 1441.5 | 38,839 | N/A | |
| text factuality | industry medicine and healthcare | 74 | 1460.8 | 1,281 | N/A | |
| text factuality | industry legal and government | 75 | 1445.5 | 1,572 | N/A | |
| text style control | expert | 76 | 1464.9 | 3,894 | N/A | |
| text factuality | chinese | 77 | 1453.4 | 1,112 | N/A | |
| text | russian | 79 | 1422.7 | 5,716 | N/A | |
| text factuality | english | 79 | 1448.1 | 18,298 | N/A | |
| text style control | math | 80 | 1433.2 | 4,705 | N/A | |
| text | industry software and it services | 81 | 1450.8 | 26,284 | N/A | |
| text style control | industry mathematical | 81 | 1440.6 | 3,757 | N/A | |
| text | industry entertainment and sports and media | 83 | 1397.5 | 14,062 | N/A | |
| text factuality | industry business and management and financial operations | 84 | 1432.6 | 4,573 | N/A | |
| text factuality | non english | 84 | 1419.9 | 20,993 | N/A | |
| text | polish | 86 | 1413.1 | 3,611 | N/A | |
| text factuality | overall | 86 | 1435.2 | 40,916 | N/A | |
| text | japanese | 88 | 1369.2 | 1,045 | N/A | |
| text factuality | exclude ties | 89 | 1429.1 | 28,960 | N/A | |
| text factuality | industry life and physical and social science | 94 | 1446.5 | 3,784 | N/A | |
| text | korean | 96 | 1363.0 | 1,527 | N/A | |
| text | industry mathematical | 97 | 1425.5 | 3,757 | N/A | |
| text style control | chinese | 97 | 1465.1 | 3,828 | N/A | |
| text | french | 98 | 1427.4 | 1,273 | N/A | |
| text | expert | 100 | 1424.5 | 3,894 | N/A | |
| text | math | 100 | 1421.5 | 4,705 | N/A | |
| text | english | 101 | 1428.7 | 36,284 | N/A | |
| text | german | 102 | 1402.9 | 1,473 | N/A | |
| text | overall | 105 | 1417.4 | 77,192 | N/A | |
| text | exclude ties | 105 | 1403.8 | 55,676 | N/A | |
| text | non english | 106 | 1401.9 | 40,860 | N/A | |
| text | industry business and management and financial operations | 109 | 1404.4 | 13,917 | N/A | |
| text | industry legal and government | 115 | 1416.8 | 5,258 | N/A | |
| text | industry medicine and healthcare | 120 | 1413.7 | 4,316 | N/A | |
| text | industry life and physical and social science | 128 | 1416.2 | 12,066 | N/A | |
| text | chinese | 137 | 1424.4 | 3,828 | N/A |
Official vendor API PAYG pricing is summarized first. The table then lists individual provider offerings without treating their minimum as the official price.
| Jiekou.AI | claude-opus-4-1-20250805 | global | $13.5 | $67.5 | 200K | |
| NanoGPT | claude-opus-4-1-20250805 | global | $15 | $75 | 200K | |
| LLM Gateway | claude-opus-4-1-20250805 | 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 | |
| Abacus | claude-opus-4-1-20250805 | 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.
All published versions linked to this unique model. The score columns identify the version used by the current overall ranking.
| Claude Opus 4.1 | N/A | N/A | 200K | 32K | No | Proprietary |
A concise description based on the published model registry.
Claude Opus 4.1 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. It advances state-of-the-art coding performance to 74.5% 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.
Use the benchmark, Arena and pricing sections above as separate evidence. A missing field means the current data snapshot does not support that claim.
Data snapshot: 2026-08-07. Editorial model content is not available in the backend.
Recommendations prioritize the same model type and family, then the closest published LLMBoard score.
Common questions about Claude Opus 4.1.
Claude Opus 4.1's default version was released on Aug 5, 2025.
No official standard PAYG price is currently available for Claude Opus 4.1. The lowest tracked third-party offer starts at $13.5 input and $67.5 output via Jiekou.AI.
Claude Opus 4.1 is published under Anthropic in the model registry.
The default version has a 200K token context window.
No. The default version is not marked as having publicly available weights.
6 published provider offerings are linked to the default version.
No nearby ranked alternatives are currently available.