Model Comparison
Gemini 3 Flash vs Grok Code Fast 1Which is better in 2026?
Gemini 3 Flash significantly outperforms across most benchmarks. Grok Code Fast 1 is 2.1x cheaper per token.
Verdict: Gemini 3 Flash vs Grok Code Fast 1 — which is better?
Gemini 3 Flash (by Google) and Grok Code Fast 1 (by xAI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.
Gemini 3 Flash outperforms in 1 benchmarks (SWE-Bench Verified), while Grok Code Fast 1 is better at 0 benchmarks. Gemini 3 Flash significantly outperforms across most benchmarks.
On price, Grok Code Fast 1 is roughly 2.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Gemini 3 Flash also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.
Choose Gemini 3 Flash if…
- you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
- you process long inputs — it offers a 1,000,000 token context window
- you want the most recent training data — it shipped Dec 2025
Choose Grok Code Fast 1 if…
- cost matters — it's about 2.1x cheaper per token
Performance Benchmarks
Comparative analysis across standard metrics
Gemini 3 Flash outperforms in 1 benchmarks (SWE-Bench Verified), while Grok Code Fast 1 is better at 0 benchmarks.
Gemini 3 Flash significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, Gemini 3 Flash ($0.50/1M tokens) is 2.5x more expensive than Grok Code Fast 1 ($0.20/1M tokens).
For output processing, Gemini 3 Flash ($3.00/1M tokens) is 2.0x more expensive than Grok Code Fast 1 ($1.50/1M tokens).
In conclusion, Gemini 3 Flash is more expensive than Grok Code Fast 1.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Gemini 3 Flash accepts 1,000,000 input tokens compared to Grok Code Fast 1's 256,000 tokens. Gemini 3 Flash can generate longer responses up to 65,536 tokens, while Grok Code Fast 1 is limited to 10,000 tokens.
Input Capabilities
Supported data types and modalities
Gemini 3 Flash supports multimodal inputs, whereas Grok Code Fast 1 does not.
Gemini 3 Flash can handle both text and other forms of data like images, making it suitable for multimodal applications.
Gemini 3 Flash
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
Gemini 3 Flash was released on 2025-12-17, while Grok Code Fast 1 was released on 2025-08-28.
Gemini 3 Flash is 4 months newer than Grok Code Fast 1.
Dec 17, 2025
6 months ago
3mo newerAug 28, 2025
10 months ago
Knowledge Cutoff
When training data ends
Gemini 3 Flash has a documented knowledge cutoff of 2025-01-31, while Grok Code Fast 1's cutoff date is not specified.
We can confirm Gemini 3 Flash's training data extends to 2025-01-31, but cannot make a direct comparison without Grok Code Fast 1's cutoff date.
Jan 2025
—
Provider Availability
Gemini 3 Flash is available from Google. Grok Code Fast 1 is available from xAI.
Gemini 3 Flash
Grok Code Fast 1
Outputs Comparison
Key Takeaways
Detailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against Gemini 3 Flash and Grok Code Fast 1 side-by-side, then vote on the output you prefer.
| Feature | | |
|---|
FAQ
Common questions about Gemini 3 Flash vs Grok Code Fast 1.