Gemini 3.1 Flash-Lite vs Grok 4
Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.
Google · Mar 2026
The cheapest Gemini 3 model: multimodal input and a 1M context for $0.25/$1.50 — built for massive-scale pipelines.
xAI · Jul 2025
xAI's mid-2025 flagship, trained on the 200K-GPU Colossus cluster — a math and science reasoning standout of its generation.
The verdict
These two models don't yet share verified results on the benchmarks we track, so judge them on specs, pricing and intended use. On price the gap is dramatic: Gemini 3.1 Flash-Lite works out roughly 11x cheaper per blended million tokens. Gemini 3.1 Flash-Lite also takes 1M of context versus 256K for Grok 4.
Specs & pricing
| Gemini 3.1 Flash-Lite | Grok 4 | |
|---|---|---|
| modhub Index | — | — |
| Input price / 1M | $0.25 | $3 |
| Output price / 1M | $1.5 | $15 |
| Context window | 1M | 256K |
| Max output | 66K | — |
| Open weights | no | no |
| Reasoning model | no | yes |
| Multimodal input | text, image, audio, video | text, image |
| Knowledge cutoff | Nov 2025 | Jul 2025 |
| Released | Mar 2026 | Jul 2025 |
| Example monthly cost* | $4.75 | $52.50 |
* 10M input + 1.5M output tokens per month at list prices, no caching. Green = better value on that row.
Frequently asked questions
- Which is better, Gemini 3.1 Flash-Lite or Grok 4?
- These two models don't yet share verified results on the benchmarks we track, so judge them on specs, pricing and intended use. On price the gap is dramatic: Gemini 3.1 Flash-Lite works out roughly 11x cheaper per blended million tokens. Gemini 3.1 Flash-Lite also takes 1M of context versus 256K for Grok 4.
- Which is cheaper, Gemini 3.1 Flash-Lite or Grok 4?
- Gemini 3.1 Flash-Lite costs $0.25/$1.5 per million input/output tokens, while Grok 4 costs $3/$15. For a typical workload of 10M input and 1.5M output tokens per month, that's $4.75 versus $52.50.
- Which model is better for coding, Gemini 3.1 Flash-Lite or Grok 4?
- We don't yet track SWE-bench Verified results for both models; check their individual pages for coding-related scores.