GPT-4o mini vs Grok Code Fast 1
Grok Code Fast 1 leads the LLM Stats Score 20.7 to 3.6. GPT-4o mini is 2.0x cheaper per token.
OpenAI · xAI · Updated for 2026
Which is better?
Grok Code Fast 1 leads the overall LLM Stats Score 20.7 to 3.6, ranking #192 overall.
In the 1 individual benchmarks reported for both models, Grok Code Fast 1 wins 1; this is a narrower head-to-head signal than the composite indexes.
On price, GPT-4o mini is roughly 2.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Grok Code Fast 1 also accepts a larger context window (256,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose GPT-4o mini
- cost matters — it's about 2.0x cheaper per token
Choose Grok Code Fast 1
- overall performance matters — it scores 20.7 and ranks #192 on LLM Stats
- your work emphasizes reasoning and coding — it leads those capability indexes
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
- you process long inputs — it offers a 256,000 token context window
- you want the most recent training data — it shipped Aug 2025
At a glance
The differences that matter most.
Individual benchmarks
9 reported for GPT-4o mini · 1 for Grok Code Fast 1
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.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
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
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.
Input capabilities
Documented input modalities across available providers
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
Grok Code Fast 1
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
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.
Jul 18, 2024
2.2 years ago
Aug 28, 2025
1.1 years ago
1.1yr newerKnowledge 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.
Oct 2023
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Provider Availability
GPT-4o mini is available from Azure. Grok Code Fast 1 is available from xAI.
GPT-4o mini
Grok Code Fast 1
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-4o mini and Grok Code Fast 1 side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-4o mini vs Grok Code Fast 1.