Gemini 3.5 Flash-Lite vs Grok-4
Gemini 3.5 Flash-Lite and Grok-4 are closely matched at 29.9 and 33.7 on the LLM Stats Score. Gemini 3.5 Flash-Lite is 7.1x cheaper per token.
Google · xAI · Updated for 2026
Which is better?
Gemini 3.5 Flash-Lite and Grok-4 are closely matched on the overall LLM Stats Score at 29.9 and 33.7.
On price, Gemini 3.5 Flash-Lite is roughly 7.1x 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
- cost matters — it's about 7.1x cheaper per token
- 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-4
- you want predictable pricing at $3.00/M input and $15.00/M output
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
6 reported for Gemini 3.5 Flash-Lite · 7 for Grok-4
Gemini 3.5 Flash-Lite and Grok-4don'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 10.0x cheaper than Grok-4 ($3.00/1M tokens).
For output processing, Gemini 3.5 Flash-Lite ($2.50/1M tokens) is 6.0x cheaper than Grok-4 ($15.00/1M tokens).
In conclusion, Grok-4 is more expensive than Gemini 3.5 Flash-Lite.*
* 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-4's 256,000 tokens. Gemini 3.5 Flash-Lite can generate longer responses up to 65,536 tokens, while Grok-4 is limited to 8,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Gemini 3.5 Flash-Lite and Grok-4 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Gemini 3.5 Flash-Lite
Grok-4
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-4 was released on 2025-07-09.
Gemini 3.5 Flash-Lite is 13 months newer than Grok-4.
Jul 21, 2026
1 months ago
1.0yr newerJul 9, 2025
1.2 years ago
Knowledge Cutoff
When training data ends
Gemini 3.5 Flash-Lite has a knowledge cutoff of 2026-03-31, while Grok-4 has a cutoff of 2024-12-31.
Gemini 3.5 Flash-Lite has more recent training data (up to 2026-03-31), making it potentially better informed about events through that date compared to Grok-4 (2024-12-31).
Mar 2026
1.3 yr newerDec 2024
Provider Availability
Gemini 3.5 Flash-Lite is available from Google. Grok-4 is available from xAI.
Gemini 3.5 Flash-Lite
Grok-4
Outputs Comparison
Judge for yourself.
Run your own prompts against Gemini 3.5 Flash-Lite and Grok-4 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Gemini 3.5 Flash-Lite vs Grok-4.