Gemini 3.5 Flash-Lite vs Grok Code Fast 1
Gemini 3.5 Flash-Lite and Grok Code Fast 1 are closely matched at 29.7 and 20.7 on the LLM Stats Score. Grok Code Fast 1 is 1.6x cheaper per token.
Google · xAI · Updated for 2026
Which is better?
Gemini 3.5 Flash-Lite and Grok Code Fast 1 are closely matched on the overall LLM Stats Score at 29.7 and 20.7.
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.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Gemini 3.5 Flash-Lite
- 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
- cost matters — it's about 1.6x cheaper per token
At a glance
The differences that matter most.
Individual benchmarks
6 reported for Gemini 3.5 Flash-Lite · 1 for Grok Code Fast 1
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.
Human preference
Blind head-to-head votes and playground preference scores
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
Documented input modalities across available providers
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
2 months ago
10mo newerAug 28, 2025
1.1 years 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
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.
FAQ
Common questions about Gemini 3.5 Flash-Lite vs Grok Code Fast 1.