Model Comparison

GPT-4o mini vs Grok Code Fast 1

Grok Code Fast 1 significantly outperforms across most benchmarks. GPT-4o mini is 2.0x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

GPT-4o mini outperforms in 0 benchmarks, while Grok Code Fast 1 is better at 1 benchmark (SWE-Bench Verified).

Grok Code Fast 1 significantly outperforms across most benchmarks.

Wed May 06 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT-4o mini costs less

For input processing, GPT-4o mini ($0.15/1M tokens) is 1.3x cheaper than Grok Code Fast 1 ($0.20/1M tokens).

For output processing, GPT-4o mini ($0.60/1M tokens) is 2.5x cheaper than Grok Code Fast 1 ($1.50/1M tokens).

In conclusion, Grok Code Fast 1 is more expensive than GPT-4o mini.*

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

Lowest available price from all providers
Wed May 06 2026 • llm-stats.com
OpenAI
GPT-4o mini
Input tokens$0.15
Output tokens$0.60
Best providerAzure
xAI
Grok Code Fast 1
Input tokens$0.20
Output tokens$1.50
Best providerxAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Grok Code Fast 1 accepts 256,000 input tokens compared to GPT-4o mini's 128,000 tokens. GPT-4o mini can generate longer responses up to 16,384 tokens, while Grok Code Fast 1 is limited to 10,000 tokens.

OpenAI
GPT-4o mini
Input128,000 tokens
Output16,384 tokens
xAI
Grok Code Fast 1
Input256,000 tokens
Output10,000 tokens
Wed May 06 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-4o mini supports multimodal inputs, whereas Grok Code Fast 1 does not.

GPT-4o mini can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT-4o mini

Text
Images
Audio
Video

Grok Code Fast 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.

GPT-4o mini

Proprietary

Closed source

Grok Code Fast 1

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-4o mini was released on 2024-07-18, while Grok Code Fast 1 was released on 2025-08-28.

Grok Code Fast 1 is 14 months newer than GPT-4o mini.

GPT-4o mini

Jul 18, 2024

1.8 years ago

Grok Code Fast 1

Aug 28, 2025

8 months ago

1.1yr newer

Knowledge Cutoff

When training data ends

GPT-4o mini has a documented knowledge cutoff of 2023-10-01, while Grok Code Fast 1'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 Code Fast 1's cutoff date.

GPT-4o mini

Oct 2023

Grok Code Fast 1

—

Provider Availability

GPT-4o mini is available from Azure. Grok Code Fast 1 is available from xAI.

GPT-4o mini

azure logo
Azure
Input Price:Input: $0.15/1MOutput Price:Output: $0.60/1M

Grok Code Fast 1

xai logo
xAI
Input Price:Input: $0.20/1MOutput Price:Output: $1.50/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

OpenAI
Supports multimodal inputs
Less expensive input tokens
Less expensive output tokens
xAI
Larger context window (256,000 tokens)
Higher SWE-Bench Verified score (70.8% vs 8.7%)

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-4o mini
xAI
Grok Code Fast 1

FAQ

Common questions about GPT-4o mini vs Grok Code Fast 1.

Which is better, GPT-4o mini or Grok Code Fast 1?

Grok Code Fast 1 significantly outperforms across most benchmarks. GPT-4o mini is made by OpenAI and Grok Code Fast 1 is made by xAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-4o mini compare to Grok Code Fast 1 in benchmarks?

GPT-4o mini scores HumanEval: 87.2%, MGSM: 87.0%, MMLU: 82.0%, DROP: 79.7%, MATH: 70.2%. Grok Code Fast 1 scores SWE-Bench Verified: 70.8%.

Is GPT-4o mini cheaper than Grok Code Fast 1?

GPT-4o mini is 1.3x cheaper for input tokens. GPT-4o mini costs $0.15/M input and $0.60/M output via azure. Grok Code Fast 1 costs $0.20/M input and $1.50/M output via xai.

What are the context window sizes for GPT-4o mini and Grok Code Fast 1?

GPT-4o mini supports 128K tokens and Grok Code Fast 1 supports 256K 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 mini and Grok Code Fast 1?

Key differences include context window (128K vs 256K), input pricing ($0.15 vs $0.20/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-4o mini and Grok Code Fast 1?

GPT-4o mini is developed by OpenAI and Grok Code Fast 1 is developed by xAI.