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AnthropicProprietary
Claude Opus 4.1
Claude Opus 4.1 is a reasoning model developed by Anthropic. It is equipped with a 200K wide context window and provides advanced reasoning capabilities.
Parameters
Undisclosed
Context Window
200K
License
Proprietary
Release Date
2025-08-06
API Pricing
Input Price (per 1M tokens)
$7.5
Output Price (per 1M tokens)
$
Billing Mode: standard
Strengths
- ・Advanced reasoning capabilities
- ・200K long context understanding
- ・Powerful foundational model performance
Weaknesses
- ・Closed-source
- ・Detailed specifications are non-public
- ・Usage may be restricted
Use Cases
- ・Complex logical reasoning
- ・Long document analysis
- ・Advanced problem-solving
Deep Analysis
SWE-Bench Verified
74.5%
GPQA Diamond
80.9%
Pricing
$15.00/$75.00 per 1M tokens
Legacy pricing
Context Window
200K tokens
Release Date
August 5, 2025
Strengths
- ・Strong SWE-Bench (74.5%)
- ・Excellent instruction following
- ・200K context
- ・Extended thinking mode
Weaknesses
- ・Legacy model — superseded by Opus 4.5 and 4.6
- ・Very expensive ($15/$75)
- ・200K context now standard
Competitor Comparison
| Model | SWE | GPQA | Price |
|---|---|---|---|
| Claude Opus 4.5 | 68.4% | 86.5% | $12/$60 |
| Claude Opus 4.6 | 80.8% | 91.3% | $5/$25 |
Sources
Analysis generated: 2026-05-24