Claude Opus 4.5 vs Claude Opus 4.6 (Comparative Analysis)
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Comparative Analysis: Claude Opus 4.5 vs. Claude Opus 4.6
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Overview
Claude Opus 4.5 was released 2 months before Claude Opus 4.6.
 Claude Opus 4.5 | Claude Opus 4.6 | |
|---|---|---|
Model Provider The organization behind this AI's development | Anthropic | Anthropic |
Input Context Window Maximum input tokens this model can process at once | 200K tokens | 1M tokens |
Output Token Limit Maximum output tokens this model can generate at once | 64K tokens | 128K tokens |
Release Date When this model first became publicly available | November 24, 2025 8 months ago November 24th, 2025 | February 4, 2026 6 months ago February 4th, 2026 |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
Claude Opus 4.5 | Claude Opus 4.6 | |
|---|---|---|
Input Types Supported input formats | 📁File🖼️Image📝Text | 📝Text🖼️Image📁File |
Reasoning Controls Defaults and configurable reasoning effort | Optional | OptionalEffort: Max, High, Medium, LowDefault: HighToken budget configurable |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | Claude | Claude |
Key Features Advanced capabilities | ✓Function Calling✓Structured Output✓Reasoning Mode✓Content Moderation | ✓Function Calling✓Structured Output✓Reasoning Mode✓Content Moderation |
Pricing
Claude Opus 4.5 is roughly 1.0x less expensive compared to Claude Opus 4.6 for input tokens and roughly 1.0x less expensive for output tokens.
| Claude Opus 4.5 | Claude Opus 4.6 | |
|---|---|---|
Input Token Cost Cost per million input tokens | $5.00 per million tokens | $5.00 per million tokens |
Output Token Cost Cost per million output tokens | $25.00 per million tokens | $25.00 per million tokens |
Web Search Cost Additional cost for each web search operation | $0.01 per search | $0.01 per search |
Cache Read Cost Cost to reuse cached input tokens | $0.50 per million tokens | $0.50 per million tokens |
Cache Write Cost Cost to write input tokens to the cache | $6.25 per million tokens | $6.25 per million tokens |
1-Hour Cache Write Cost Cost to cache input tokens for one hour | $10.00 per million tokens | $10.00 per million tokens |
Benchmarks
Compare relevant benchmarks between Claude Opus 4.5 and Claude Opus 4.6.
| Claude Opus 4.5 | Claude Opus 4.6 | |
|---|---|---|
Best Design Arena Score Highest human-preference Elo score across design arenas | 1,272 Elo (#26 in UI Component (58.5% win rate)) | 1,329 Elo (#7 in 3D (62.5% win rate)) |
At a Glance
Quick overview of what makes Claude Opus 4.5 and Claude Opus 4.6 unique.
Claude Opus 4.5 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 $5.00/M input and $25.00/M output tokens. Includes built-in content moderation for safer outputs. Released November 24th, 2025.Claude Opus 4.6 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 1M token context window. Premium pricing at $5.00/M input and $25.00/M output tokens. Includes built-in content moderation for safer outputs. Released February 4th, 2026.Explore More Comparisons
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Compare Claude Opus 4.6 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
Multilingual translation tasks