Model Comparison

Claude Opus 4 vs o4-mini

Claude Opus 4 has a slight edge in benchmark performance. o4-mini is 15.6x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

Claude Opus 4 outperforms in 3 benchmarks (SWE-Bench Verified, TAU-bench Airline, TAU-bench Retail), while o4-mini is better at 2 benchmarks (AIME 2025, GPQA).

Claude Opus 4 has a slight edge in benchmark performance.

Sun May 31 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

o4-mini costs less

For input processing, Claude Opus 4 ($15.00/1M tokens) is 13.6x more expensive than o4-mini ($1.10/1M tokens).

For output processing, Claude Opus 4 ($75.00/1M tokens) is 17.0x more expensive than o4-mini ($4.40/1M tokens).

In conclusion, Claude Opus 4 is more expensive than o4-mini.*

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

Lowest available price from all providers
Sun May 31 2026 • llm-stats.com
Anthropic
Claude Opus 4
Input tokens$15.00
Output tokens$75.00
Best providerAnthropic
OpenAI
o4-mini
Input tokens$1.10
Output tokens$4.40
Best providerOpenAI
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. o4-mini can generate longer responses up to 100,000 tokens, while Claude Opus 4 is limited to 32,000 tokens.

Anthropic
Claude Opus 4
Input200,000 tokens
Output32,000 tokens
OpenAI
o4-mini
Input200,000 tokens
Output100,000 tokens
Sun May 31 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 4 and o4-mini support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Claude Opus 4

Text
Images
Audio
Video

o4-mini

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.

Claude Opus 4

Proprietary

Closed source

o4-mini

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 4 was released on 2025-05-22, while o4-mini was released on 2025-04-16.

Claude Opus 4 is 1 month newer than o4-mini.

Claude Opus 4

May 22, 2025

1.0 years ago

1mo newer
o4-mini

Apr 16, 2025

1.1 years ago

Knowledge Cutoff

When training data ends

o4-mini has a documented knowledge cutoff of 2024-05-31, while Claude Opus 4's cutoff date is not specified.

We can confirm o4-mini's training data extends to 2024-05-31, but cannot make a direct comparison without Claude Opus 4's cutoff date.

Claude Opus 4

—

o4-mini

May 2024

Provider Availability

Claude Opus 4 is available from Anthropic, Bedrock, Google. o4-mini is available from OpenAI.

Claude Opus 4

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

o4-mini

openai logo
OpenAI
Input Price:Input: $1.10/1MOutput Price:Output: $4.40/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Anthropic
Higher SWE-Bench Verified score (72.5% vs 68.1%)
Higher TAU-bench Airline score (59.6% vs 49.2%)
Higher TAU-bench Retail score (81.4% vs 71.8%)
OpenAI
Less expensive input tokens
Less expensive output tokens
Higher AIME 2025 score (92.7% vs 75.5%)
Higher GPQA score (81.4% vs 79.6%)
AnthropicClaude Opus 4
OpenAIo4-mini
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Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Opus 4
OpenAI
o4-mini

FAQ

Common questions about Claude Opus 4 vs o4-mini.

Which is better, Claude Opus 4 or o4-mini?

Claude Opus 4 has a slight edge in benchmark performance. Claude Opus 4 is made by Anthropic and o4-mini is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Opus 4 compare to o4-mini in benchmarks?

Claude Opus 4 scores MMMLU: 88.8%, TAU-bench Retail: 81.4%, GPQA: 79.6%, MMMU (validation): 76.5%, AIME 2025: 75.5%. o4-mini scores AIME 2024: 93.4%, AIME 2025: 92.7%, MathVista: 84.3%, MMMU: 81.6%, GPQA: 81.4%.

Is Claude Opus 4 cheaper than o4-mini?

o4-mini is 13.6x cheaper for input tokens. Claude Opus 4 costs $15.00/M input and $75.00/M output via anthropic. o4-mini costs $1.10/M input and $4.40/M output via openai.

What are the context window sizes for Claude Opus 4 and o4-mini?

Claude Opus 4 supports 200K tokens and o4-mini 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 Claude Opus 4 and o4-mini?

Key differences include input pricing ($15.00 vs $1.10/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 4 and o4-mini?

Claude Opus 4 is developed by Anthropic and o4-mini is developed by OpenAI.