Model Comparison

GPT-4o mini vs Grok-2 mini

Grok-2 mini significantly outperforms across most benchmarks.

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Performance Benchmarks

Comparative analysis across standard metrics

6 benchmarks

GPT-4o mini outperforms in 1 benchmarks (HumanEval), while Grok-2 mini is better at 5 benchmarks (GPQA, MATH, MathVista, MMLU, MMMU).

Grok-2 mini significantly outperforms across most benchmarks.

Fri Apr 10 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Cost data unavailable.

Lowest available price from all providers
Fri Apr 10 2026 • llm-stats.com
OpenAI
GPT-4o mini
Input tokens$0.15
Output tokens$0.60
Best providerAzure
xAI
Grok-2 mini
Input tokens$0.00
Output tokens$0.00
Best providerUnknown Organization
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Context Window

Maximum input and output token capacity

Only GPT-4o mini specifies input context (128,000 tokens). Only GPT-4o mini specifies output context (16,384 tokens).

OpenAI
GPT-4o mini
Input128,000 tokens
Output16,384 tokens
xAI
Grok-2 mini
Input- tokens
Output- tokens
Fri Apr 10 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-4o mini and Grok-2 mini support multimodal inputs.

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

GPT-4o mini

Text
Images
Audio
Video

Grok-2 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.

GPT-4o mini

Proprietary

Closed source

Grok-2 mini

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-4o mini was released on 2024-07-18, while Grok-2 mini was released on 2024-08-13.

Grok-2 mini is 1 month newer than GPT-4o mini.

GPT-4o mini

Jul 18, 2024

1.7 years ago

Grok-2 mini

Aug 13, 2024

1.7 years ago

3w newer

Knowledge Cutoff

When training data ends

GPT-4o mini has a documented knowledge cutoff of 2023-10-01, while Grok-2 mini's cutoff date is not specified.

We can confirm GPT-4o mini's training data extends to 2023-10-01, but cannot make a direct comparison without Grok-2 mini's cutoff date.

GPT-4o mini

Oct 2023

Grok-2 mini

—

Outputs Comparison

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Key Takeaways

OpenAI
Larger context window (128,000 tokens)
Higher HumanEval score (87.2% vs 85.7%)
xAI
Higher GPQA score (51.0% vs 40.2%)
Higher MATH score (73.0% vs 70.2%)
Higher MathVista score (68.1% vs 56.7%)
Higher MMLU score (86.2% vs 82.0%)
Higher MMMU score (63.2% vs 59.4%)

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-4o mini
xAI
Grok-2 mini

FAQ

Common questions about GPT-4o mini vs Grok-2 mini

Grok-2 mini significantly outperforms across most benchmarks. GPT-4o mini is made by OpenAI and Grok-2 mini is made by xAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
GPT-4o mini scores HumanEval: 87.2%, MGSM: 87.0%, MMLU: 82.0%, DROP: 79.7%, MATH: 70.2%. Grok-2 mini scores DocVQA: 93.2%, MMLU: 86.2%, HumanEval: 85.7%, MATH: 73.0%, MMLU-Pro: 72.0%.
GPT-4o mini supports 128K tokens and Grok-2 mini supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
GPT-4o mini is developed by OpenAI and Grok-2 mini is developed by xAI.