Model Comparison

GPT-4o vs Grok-2 mini

Both models are evenly matched across the benchmarks.

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Performance Benchmarks

Comparative analysis across standard metrics

6 benchmarks

GPT-4o outperforms in 3 benchmarks (GPQA, MMLU-Pro, MMMU), while Grok-2 mini is better at 3 benchmarks (DocVQA, MathVista, MMLU).

Both models are evenly matched across the benchmarks.

Wed Apr 08 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
Wed Apr 08 2026 • llm-stats.com
OpenAI
GPT-4o
Input tokens$2.50
Output tokens$10.00
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 specifies input context (128,000 tokens). Only GPT-4o specifies output context (16,384 tokens).

OpenAI
GPT-4o
Input128,000 tokens
Output16,384 tokens
xAI
Grok-2 mini
Input- tokens
Output- tokens
Wed Apr 08 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

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

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

GPT-4o

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

Proprietary

Closed source

Grok-2 mini

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-4o was released on 2024-08-06, while Grok-2 mini was released on 2024-08-13.

Grok-2 mini is 0 month newer than GPT-4o.

GPT-4o

Aug 6, 2024

1.7 years ago

Grok-2 mini

Aug 13, 2024

1.7 years ago

1w newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

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Key Takeaways

OpenAI
Larger context window (128,000 tokens)
Higher GPQA score (70.1% vs 51.0%)
Higher MMLU-Pro score (74.7% vs 72.0%)
Higher MMMU score (72.2% vs 63.2%)
xAI
Higher DocVQA score (93.2% vs 92.8%)
Higher MathVista score (68.1% vs 61.4%)
Higher MMLU score (86.2% vs 85.7%)

Detailed Comparison

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

FAQ

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

Both models are evenly matched across the benchmarks. GPT-4o 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 scores AI2D: 94.2%, DocVQA: 92.8%, ChartQA: 85.7%, MMLU: 85.7%, CharXiv-D: 85.3%. Grok-2 mini scores DocVQA: 93.2%, MMLU: 86.2%, HumanEval: 85.7%, MATH: 73.0%, MMLU-Pro: 72.0%.
GPT-4o 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 is developed by OpenAI and Grok-2 mini is developed by xAI.