Claude Opus 4.1 vs Kimi K2 0711 (Comparative Analysis)
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Comparative Analysis: Claude Opus 4.1 vs. Kimi K2 0711
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Overview
Kimi K2 0711 was released 25 days before Claude Opus 4.1.
 Claude Opus 4.1 |  Kimi K2 0711 | |
|---|---|---|
Model Provider The organization behind this AI's development | Anthropic | MoonshotAI |
Input Context Window Maximum input tokens this model can process at once | 200K tokens | 131.1K tokens |
Output Token Limit Maximum output tokens this model can generate at once | 32K tokens | 100.4K tokens |
Release Date When this model first became publicly available | August 5, 2025 11 months ago August 5th, 2025 | July 11, 2025 1 year ago July 11th, 2025 |
Knowledge Cutoff Latest training-data date reported by the provider | January 31, 2025 | December 31, 2024 |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
Claude Opus 4.1 | Kimi K2 0711 | |
|---|---|---|
Input Types Supported input formats | 🖼️Image📝Text📁File | 📝Text |
Reasoning Controls Defaults and configurable reasoning effort | Optional | Not reported |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | Claude | Other |
Key Features Advanced capabilities | ✓Function Calling✓Structured Output✓Reasoning Mode✓Content Moderation | ✓Function CallingStructured OutputReasoning ModeContent Moderation |
Open Source Model availability | Proprietary | Available on HuggingFace → |
Pricing
Claude Opus 4.1 is roughly 26.3x more expensive compared to Kimi K2 0711 for input tokens and roughly 32.6x more expensive for output tokens.
| Claude Opus 4.1 | Kimi K2 0711 | |
|---|---|---|
Input Token Cost Cost per million input tokens | $15.00 per million tokens | $0.57 per million tokens |
Output Token Cost Cost per million output tokens | $75.00 per million tokens | $2.30 per million tokens |
Web Search Cost Additional cost for each web search operation | $0.01 per search | Not specified |
Cache Read Cost Cost to reuse cached input tokens | $1.50 per million tokens | Not specified |
Cache Write Cost Cost to write input tokens to the cache | $18.75 per million tokens | Not specified |
1-Hour Cache Write Cost Cost to cache input tokens for one hour | $30.00 per million tokens | Not specified |
Benchmarks
Compare relevant benchmarks between Claude Opus 4.1 and Kimi K2 0711.
| Claude Opus 4.1 | Kimi K2 0711 | |
|---|---|---|
Best Design Arena Score Highest human-preference Elo score across design arenas | 1,228 Elo (#40 in Game Dev (58.5% win rate)) | 1,075 Elo (#93 in Website (53.1% win rate)) |
At a Glance
Quick overview of what makes Claude Opus 4.1 and Kimi K2 0711 unique.
Claude Opus 4.1 by Anthropic understands both text and images, can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 200K token context window. Premium pricing at $15.00/M input and $75.00/M output tokens. Includes built-in content moderation for safer outputs. Released August 5th, 2025.Kimi K2 0711 by MoonshotAI can use external tools and APIs. It can handle standard conversations with its 131.1K token context window. Reasonably priced at $0.57/M input and $2.30/M output tokens. Released July 11th, 2025.Explore More Comparisons
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Compare Kimi K2 0711 with:
🚀Programming
Best models for coding and development
🎨Creative & Roleplay
Models optimized for creative writing
📢Marketing
Content creation and marketing tasks
💻Technology
Technical analysis and explanations
🔬Science
Scientific research and analysis
🌐Translation
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