Claude Opus 4.1 vs o3 Mini High (Comparative Analysis)
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Comparative Analysis: Claude Opus 4.1 vs. o3 Mini High
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Overview
o3 Mini High was released 5 months before Claude Opus 4.1.
 Claude Opus 4.1 |  o3 Mini High | |
|---|---|---|
Model Provider The organization behind this AI's development | Anthropic | OpenAI |
Input Context Window Maximum input tokens this model can process at once | 200K tokens | 200K tokens |
Output Token Limit Maximum output tokens this model can generate at once | 32K tokens | 100K tokens |
Release Date When this model first became publicly available | August 5, 2025 1 year ago August 5th, 2025 | February 12, 2025 1 year ago February 12th, 2025 |
Knowledge Cutoff Latest training-data date reported by the provider | January 31, 2025 | October 31, 2023 |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
Claude Opus 4.1 | o3 Mini High | |
|---|---|---|
Input Types Supported input formats | 🖼️Image📝Text📁File | 📝Text📁File |
Reasoning Controls Defaults and configurable reasoning effort | Optional | Always enabledEffort: HighDefault: High |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | Claude | GPT |
Key Features Advanced capabilities | ✓Function CallingStructured Output✓Reasoning Mode✓Content Moderation | ✓Function Calling✓Structured Output✓Reasoning Mode✓Content Moderation |
Pricing
Claude Opus 4.1 is roughly 13.6x more expensive compared to o3 Mini High for input tokens and roughly 17.0x more expensive for output tokens.
| Claude Opus 4.1 | o3 Mini High | |
|---|---|---|
Input Token Cost Cost per million input tokens | $15.00 per million tokens | $1.10 per million tokens |
Output Token Cost Cost per million output tokens | $75.00 per million tokens | $4.40 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 | $1.50 per million tokens | $0.55 per million tokens |
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 o3 Mini High.
| Claude Opus 4.1 | o3 Mini High | |
|---|---|---|
Intelligence Index Overall model quality across independent evaluations | Benchmark not available. | 15.7 (Artificial Analysis index; higher is better) |
Coding Index Programming performance across independent evaluations | Benchmark not available. | 16.3 (Artificial Analysis index; higher is better) |
Agentic Index Ability to complete multi-step agentic tasks | Benchmark not available. | 1.7 (Artificial Analysis index; higher is better) |
Best Design Arena Score Highest human-preference Elo score across design arenas | 1,213 Elo (#43 in Game Dev (58.5% win rate)) | Benchmark not available. |
At a Glance
Quick overview of what makes Claude Opus 4.1 and o3 Mini High unique.
Claude Opus 4.1 by Anthropic understands both text and images, can use external tools and APIs, offers advanced reasoning. 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.o3 Mini High by OpenAI can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 200K token context window. Reasonably priced at $1.10/M input and $4.40/M output tokens. Includes built-in content moderation for safer outputs. Released February 12th, 2025.Explore More Comparisons
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Technical analysis and explanations
🔬Science
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