Model Comparison

GPT-4o vs Grok-3 Mini

Grok-3 Mini significantly outperforms across most benchmarks. Grok-3 Mini is 12.5x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

GPT-4o outperforms in 0 benchmarks, while Grok-3 Mini is better at 2 benchmarks (AIME 2024, GPQA).

Grok-3 Mini significantly outperforms across most benchmarks.

Sun May 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Grok-3 Mini costs less

For input processing, GPT-4o ($2.50/1M tokens) is 8.3x more expensive than Grok-3 Mini ($0.30/1M tokens).

For output processing, GPT-4o ($10.00/1M tokens) is 20.0x more expensive than Grok-3 Mini ($0.50/1M tokens).

In conclusion, GPT-4o is more expensive than Grok-3 Mini.*

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

Lowest available price from all providers
Sun May 17 2026 • llm-stats.com
OpenAI
GPT-4o
Input tokens$2.50
Output tokens$10.00
Best providerAzure
xAI
Grok-3 Mini
Input tokens$0.30
Output tokens$0.50
Best providerxAI
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 128,000 tokens. GPT-4o can generate longer responses up to 16,384 tokens, while Grok-3 Mini is limited to 8,000 tokens.

OpenAI
GPT-4o
Input128,000 tokens
Output16,384 tokens
xAI
Grok-3 Mini
Input128,000 tokens
Output8,000 tokens
Sun May 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-4o and Grok-3 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-3 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-3 Mini

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-4o was released on 2024-08-06, while Grok-3 Mini was released on 2025-02-17.

Grok-3 Mini is 7 months newer than GPT-4o.

GPT-4o

Aug 6, 2024

1.8 years ago

Grok-3 Mini

Feb 17, 2025

1.2 years ago

6mo newer

Knowledge Cutoff

When training data ends

Grok-3 Mini has a documented knowledge cutoff of 2024-11-17, while GPT-4o's cutoff date is not specified.

We can confirm Grok-3 Mini's training data extends to 2024-11-17, but cannot make a direct comparison without GPT-4o's cutoff date.

GPT-4o

—

Grok-3 Mini

Nov 2024

Provider Availability

GPT-4o is available from Azure, OpenAI. Grok-3 Mini is available from xAI.

GPT-4o

azure logo
Azure
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M
openai logo
OpenAI
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M

Grok-3 Mini

xai logo
xAI
Input Price:Input: $0.30/1MOutput Price:Output: $0.50/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI

No standout differentiators in the data we have for this pair.

xAI
Less expensive input tokens
Less expensive output tokens
Higher AIME 2024 score (95.8% vs 13.1%)
Higher GPQA score (84.0% vs 70.1%)
OpenAIGPT-4o
xAIGrok-3 Mini
Compare in Playground

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-4o
xAI
Grok-3 Mini

FAQ

Common questions about GPT-4o vs Grok-3 Mini.

Which is better, GPT-4o or Grok-3 Mini?

Grok-3 Mini significantly outperforms across most benchmarks. GPT-4o is made by OpenAI and Grok-3 Mini is made by xAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-4o compare to Grok-3 Mini in benchmarks?

GPT-4o scores AI2D: 94.2%, DocVQA: 92.8%, ChartQA: 85.7%, MMLU: 85.7%, CharXiv-D: 85.3%. Grok-3 Mini scores AIME 2024: 95.8%, AIME 2025: 90.8%, GPQA: 84.0%, LiveCodeBench: 80.4%.

Is GPT-4o cheaper than Grok-3 Mini?

Grok-3 Mini is 8.3x cheaper for input tokens. GPT-4o costs $2.50/M input and $10.00/M output via azure. Grok-3 Mini costs $0.30/M input and $0.50/M output via xai.

What are the context window sizes for GPT-4o and Grok-3 Mini?

GPT-4o supports 128K tokens and Grok-3 Mini supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT-4o and Grok-3 Mini?

Key differences include input pricing ($2.50 vs $0.30/M). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-4o and Grok-3 Mini?

GPT-4o is developed by OpenAI and Grok-3 Mini is developed by xAI.