Model Comparison
Gemini 3.5 Flash-Lite vs Grok Code Fast 1Which is better in 2026?
Comparing Gemini 3.5 Flash-Lite and Grok Code Fast 1 across benchmarks, pricing, and capabilities.
Verdict: Gemini 3.5 Flash-Lite vs Grok Code Fast 1 — which is better?
Gemini 3.5 Flash-Lite (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.
On price, Grok Code Fast 1 is roughly 1.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Gemini 3.5 Flash-Lite also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Choose Gemini 3.5 Flash-Lite if…
- you process long inputs — it offers a 1,048,576 token context window
- you want the most recent training data — it shipped Jul 2026
Choose Grok Code Fast 1 if…
- cost matters — it's about 1.6x cheaper per token
Performance Benchmarks
Comparative analysis across standard metrics
Gemini 3.5 Flash-Lite and Grok Code Fast 1don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, Gemini 3.5 Flash-Lite ($0.30/1M tokens) is 1.5x more expensive than Grok Code Fast 1 ($0.20/1M tokens).
For output processing, Gemini 3.5 Flash-Lite ($2.50/1M tokens) is 1.7x more expensive than Grok Code Fast 1 ($1.50/1M tokens).
In conclusion, Gemini 3.5 Flash-Lite 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 3.5 Flash-Lite accepts 1,048,576 input tokens compared to Grok Code Fast 1's 256,000 tokens. Gemini 3.5 Flash-Lite 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 3.5 Flash-Lite supports multimodal inputs, whereas Grok Code Fast 1 does not.
Gemini 3.5 Flash-Lite can handle both text and other forms of data like images, making it suitable for multimodal applications.
Gemini 3.5 Flash-Lite
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 3.5 Flash-Lite was released on 2026-07-21, while Grok Code Fast 1 was released on 2025-08-28.
Gemini 3.5 Flash-Lite is 11 months newer than Grok Code Fast 1.
Jul 21, 2026
0 days ago
10mo newerAug 28, 2025
10 months ago
Knowledge Cutoff
When training data ends
Gemini 3.5 Flash-Lite has a documented knowledge cutoff of 2026-03-31, while Grok Code Fast 1's cutoff date is not specified.
We can confirm Gemini 3.5 Flash-Lite's training data extends to 2026-03-31, but cannot make a direct comparison without Grok Code Fast 1's cutoff date.
Mar 2026
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Provider Availability
Gemini 3.5 Flash-Lite is available from Google. Grok Code Fast 1 is available from xAI.
Gemini 3.5 Flash-Lite
Grok Code Fast 1
Outputs Comparison
Key Takeaways
Detailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against Gemini 3.5 Flash-Lite and Grok Code Fast 1 side-by-side, then vote on the output you prefer.
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FAQ
Common questions about Gemini 3.5 Flash-Lite vs Grok Code Fast 1.