Model Comparison

o3-mini vs Claude Opus 4.1

Claude Opus 4.1 significantly outperforms across most benchmarks. o3-mini is 15.6x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

o3-mini outperforms in 0 benchmarks, while Claude Opus 4.1 is better at 4 benchmarks (GPQA, SWE-Bench Verified, TAU-bench Airline, TAU-bench Retail).

Claude Opus 4.1 significantly outperforms across most benchmarks.

Mon May 25 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

o3-mini costs less

For input processing, o3-mini ($1.10/1M tokens) is 13.6x cheaper than Claude Opus 4.1 ($15.00/1M tokens).

For output processing, o3-mini ($4.40/1M tokens) is 17.0x cheaper than Claude Opus 4.1 ($75.00/1M tokens).

In conclusion, Claude Opus 4.1 is more expensive than o3-mini.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Mon May 25 2026 • llm-stats.com
OpenAI
o3-mini
Input tokens$1.10
Output tokens$4.40
Best providerAzure
Anthropic
Claude Opus 4.1
Input tokens$15.00
Output tokens$75.00
Best providerAnthropic
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Both models have the same input context window of 200,000 tokens. o3-mini can generate longer responses up to 100,000 tokens, while Claude Opus 4.1 is limited to 32,000 tokens.

OpenAI
o3-mini
Input200,000 tokens
Output100,000 tokens
Anthropic
Claude Opus 4.1
Input200,000 tokens
Output32,000 tokens
Mon May 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Opus 4.1 supports multimodal inputs, whereas o3-mini does not.

Claude Opus 4.1 can handle both text and other forms of data like images, making it suitable for multimodal applications.

o3-mini

Text
Images
Audio
Video

Claude Opus 4.1

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

o3-mini

Proprietary

Closed source

Claude Opus 4.1

Proprietary

Closed source

Release Timeline

When each model was launched

o3-mini was released on 2025-01-30, while Claude Opus 4.1 was released on 2025-08-05.

Claude Opus 4.1 is 6 months newer than o3-mini.

o3-mini

Jan 30, 2025

1.3 years ago

Claude Opus 4.1

Aug 5, 2025

9 months ago

6mo newer

Knowledge Cutoff

When training data ends

o3-mini has a documented knowledge cutoff of 2023-09-30, while Claude Opus 4.1's cutoff date is not specified.

We can confirm o3-mini's training data extends to 2023-09-30, but cannot make a direct comparison without Claude Opus 4.1's cutoff date.

o3-mini

Sep 2023

Claude Opus 4.1

—

Provider Availability

o3-mini is available from Azure, OpenAI. Claude Opus 4.1 is available from Anthropic, Bedrock, Google.

o3-mini

azure logo
Azure
Input Price:Input: $1.10/1MOutput Price:Output: $4.40/1M
openai logo
OpenAI
Input Price:Input: $1.10/1MOutput Price:Output: $4.40/1M

Claude Opus 4.1

anthropic logo
Anthropic
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
google logo
Google
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

OpenAI
Less expensive input tokens
Less expensive output tokens
Anthropic
Supports multimodal inputs
Higher GPQA score (80.9% vs 77.2%)
Higher SWE-Bench Verified score (74.5% vs 49.3%)
Higher TAU-bench Airline score (56.0% vs 32.4%)
Higher TAU-bench Retail score (82.4% vs 57.6%)

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
o3-mini
Anthropic
Claude Opus 4.1

FAQ

Common questions about o3-mini vs Claude Opus 4.1.

Which is better, o3-mini or Claude Opus 4.1?

Claude Opus 4.1 significantly outperforms across most benchmarks. o3-mini is made by OpenAI and Claude Opus 4.1 is made by Anthropic. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does o3-mini compare to Claude Opus 4.1 in benchmarks?

o3-mini scores COLLIE: 98.7%, MATH: 97.9%, IFEval: 93.9%, MGSM: 92.0%, AIME 2024: 87.3%. Claude Opus 4.1 scores MMMLU: 89.5%, TAU-bench Retail: 82.4%, GPQA: 80.9%, AIME 2025: 78.0%, MMMU (validation): 77.1%.

Is o3-mini cheaper than Claude Opus 4.1?

o3-mini is 13.6x cheaper for input tokens. o3-mini costs $1.10/M input and $4.40/M output via azure. Claude Opus 4.1 costs $15.00/M input and $75.00/M output via anthropic.

What are the context window sizes for o3-mini and Claude Opus 4.1?

o3-mini supports 200K tokens and Claude Opus 4.1 supports 200K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between o3-mini and Claude Opus 4.1?

Key differences include input pricing ($1.10 vs $15.00/M), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.

Who makes o3-mini and Claude Opus 4.1?

o3-mini is developed by OpenAI and Claude Opus 4.1 is developed by Anthropic.