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Yi-LargevsClaude Opus 4

01.AI vs Anthropic — Side-by-side model comparison

Claude Opus 4 leads 4/5 categories

Head-to-Head Comparison

MetricYi-LargeClaude Opus 4
Provider
Arena Rank
#1
Context Window
32K
200K
Input Pricing
Undisclosed/1M tokens
$5.00/1M tokens
Output Pricing
Undisclosed/1M tokens
$25.00/1M tokens
Parameters
Undisclosed
Undisclosed
Open Source
No
No
Best For
Complex reasoning, multilingual, analysis
Complex reasoning, coding, agentic tasks
Release Date
May 13, 2024
May 22, 2025

Yi-Large

Yi-Large, developed by 01.AI, is the most powerful model from Kai-Fu Lee's AI company, designed with particular strength in Chinese and English bilingual tasks. The model features a 32K token context window and demonstrates competitive performance on general reasoning, coding, and knowledge-intensive benchmarks. 01.AI built Yi-Large to excel at practical enterprise applications with attention to Chinese language understanding, cultural context, and business use cases prevalent in the Chinese market. The model handles complex Chinese text including classical Chinese, technical documentation, and cross-lingual tasks. 01.AI, founded by the former president of Google China, has rapidly built one of the most well-funded AI companies in China. Yi-Large competes in the Chinese enterprise AI market alongside Qwen, Ernie, GLM, and Baichuan for commercial deployments.

View 01.AI profile →

Claude Opus 4

Claude Opus 4 is Anthropic's most powerful AI model, holding the #1 position on the Chatbot Arena leaderboard. It represents a breakthrough in extended thinking and agentic capabilities, able to work autonomously on complex multi-step tasks for hours. With a 200K token context window, it excels at analyzing entire codebases, lengthy legal documents, and research papers in a single pass. The model demonstrates exceptional performance in coding (setting new benchmarks on SWE-bench), advanced reasoning, and nuanced writing tasks. Its agentic capabilities allow it to use tools, navigate computers, and execute multi-step workflows with minimal human oversight. Opus 4 is the preferred choice for enterprises requiring the highest quality output on mission-critical tasks where accuracy and depth matter more than speed or cost.

View Anthropic profile →

Key Differences: Yi-Large vs Claude Opus 4

1

Claude Opus 4 supports a larger context window (200K), allowing it to process longer documents in a single request.

Y

When to use Yi-Large

  • +Your use case involves complex reasoning, multilingual, analysis
View full Yi-Large specs →
C

When to use Claude Opus 4

  • +You need to process long documents (200K context)
  • +Your use case involves complex reasoning, coding, agentic tasks
View full Claude Opus 4 specs →

The Verdict

Claude Opus 4 wins our head-to-head comparison with 4 out of 5 category wins. It's the stronger choice for complex reasoning, coding, agentic tasks, though Yi-Large holds an edge in complex reasoning, multilingual, analysis.

Last compared: April 2026 · Data sourced from public benchmarks and official pricing pages

Frequently Asked Questions

Which is better, Yi-Large or Claude Opus 4?
In our head-to-head comparison, Claude Opus 4 leads in 4 out of 5 categories (arena rank, context window, input pricing, output pricing, and parameters). Claude Opus 4 excels at complex reasoning, coding, agentic tasks, while Yi-Large is better suited for complex reasoning, multilingual, analysis. The best choice depends on your specific requirements, budget, and use case.
How does Yi-Large pricing compare to Claude Opus 4?
Yi-Large charges Undisclosed per 1M input tokens and Undisclosed per 1M output tokens. Claude Opus 4 charges $5.00 per 1M input tokens and $25.00 per 1M output tokens. For high-volume production workloads, the pricing difference can significantly impact total cost of ownership.
What is the context window difference between Yi-Large and Claude Opus 4?
Yi-Large supports a 32K token context window, while Claude Opus 4 supports 200K tokens. Claude Opus 4 can process longer documents, codebases, and conversations in a single request. Context window size matters most for tasks involving long documents, large codebases, or extended conversations.
Can I use Yi-Large or Claude Opus 4 for free?
Yi-Large is a paid API model starting at Undisclosed per 1M input tokens. Claude Opus 4 is a paid API model starting at $5.00 per 1M input tokens.
Which model has better benchmarks, Yi-Large or Claude Opus 4?
Yi-Large's arena rank is not yet available, while Claude Opus 4 holds rank #1. Note that benchmarks don't capture every use case — we recommend testing both models on your specific tasks.
Is Yi-Large or Claude Opus 4 better for coding?
Yi-Large's primary strength is complex reasoning, multilingual, analysis. Claude Opus 4 is specifically optimized for coding tasks. For coding specifically, arena rank and code-specific benchmarks are the best indicators of performance.