Claude Opus 4.6 vs GPT-5.1-Codex-Mini (Comparative Analysis)
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Comparative Analysis: Claude Opus 4.6 vs. GPT-5.1-Codex-Mini
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Overview
GPT-5.1-Codex-Mini was released 2 months before Claude Opus 4.6.
 Claude Opus 4.6 |  GPT-5.1-Codex-Mini | |
|---|---|---|
Model Provider The organization behind this AI's development | Anthropic | OpenAI |
Input Context Window Maximum input tokens this model can process at once | 1M tokens | 400K tokens |
Output Token Limit Maximum output tokens this model can generate at once | 128K tokens | 128K tokens |
Release Date When this model first became publicly available | February 4, 2026 6 months ago February 4th, 2026 | November 13, 2025 8 months ago November 13th, 2025 |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
Claude Opus 4.6 | GPT-5.1-Codex-Mini | |
|---|---|---|
Input Types Supported input formats | 📝Text🖼️Image📁File | 🖼️Image📝Text |
Reasoning Controls Defaults and configurable reasoning effort | OptionalEffort: Max, High, Medium, LowDefault: HighToken budget configurable | OptionalEffort: High, Medium, LowDefault: Medium |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | Claude | GPT |
Key Features Advanced capabilities | ✓Function Calling✓Structured Output✓Reasoning Mode✓Content Moderation | ✓Function Calling✓Structured Output✓Reasoning ModeContent Moderation |
Pricing
Claude Opus 4.6 is roughly 20.0x more expensive compared to GPT-5.1-Codex-Mini for input tokens and roughly 12.5x more expensive for output tokens.
| Claude Opus 4.6 | GPT-5.1-Codex-Mini | |
|---|---|---|
Input Token Cost Cost per million input tokens | $5.00 per million tokens | $0.25 per million tokens |
Output Token Cost Cost per million output tokens | $25.00 per million tokens | $2.00 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 | $0.03 per million tokens |
Cache Write Cost Cost to write input tokens to the cache | $6.25 per million tokens | Not specified |
1-Hour Cache Write Cost Cost to cache input tokens for one hour | $10.00 per million tokens | Not specified |
Benchmarks
Compare relevant benchmarks between Claude Opus 4.6 and GPT-5.1-Codex-Mini.
| Claude Opus 4.6 | GPT-5.1-Codex-Mini | |
|---|---|---|
Best Design Arena Score Highest human-preference Elo score across design arenas | 1,329 Elo (#8 in 3D (62.5% win rate)) | 1,142 Elo (#46 in Asciiart (43.0% win rate)) |
At a Glance
Quick overview of what makes Claude Opus 4.6 and GPT-5.1-Codex-Mini unique.
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.GPT-5.1-Codex-Mini by OpenAI understands both text and images, can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 400K token context window. Reasonably priced at $0.25/M input and $2.00/M output tokens. Released November 13th, 2025.Explore More Comparisons
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Compare GPT-5.1-Codex-Mini with:
🚀Programming
Best models for coding and development
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Models optimized for creative writing
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Content creation and marketing tasks
💻Technology
Technical analysis and explanations
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