Gemini 3.1 Flash-Lite vs Gemini 3.5 Flash
Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.
Gemini 3.1 Flash-Lite
Google · Mar 2026
The cheapest Gemini 3 model: multimodal input and a 1M context for $0.25/$1.50 — built for massive-scale pipelines.
Gemini 3.5 Flash
Google · May 2026
Google's I/O 2026 headliner: near-Pro intelligence at Flash speed, 78.8% on SWE-bench Verified with full multimodal input.
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 6.0x cheaper per blended million tokens.
Specs & pricing
| Gemini 3.1 Flash-Lite | Gemini 3.5 Flash | |
|---|---|---|
| modhub Index | — | — |
| Input price / 1M | $0.25 | $1.5 |
| Output price / 1M | $1.5 | $9 |
| Context window | 1M | 1M |
| Max output | 66K | 66K |
| Open weights | no | no |
| Reasoning model | no | yes |
| Multimodal input | text, image, audio, video | text, image, audio, video |
| Knowledge cutoff | Nov 2025 | Feb 2026 |
| Released | Mar 2026 | May 2026 |
| Example monthly cost* | $4.75 | $28.50 |
* 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 Gemini 3.5 Flash?
- 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 6.0x cheaper per blended million tokens.
- Which is cheaper, Gemini 3.1 Flash-Lite or Gemini 3.5 Flash?
- Gemini 3.1 Flash-Lite costs $0.25/$1.5 per million input/output tokens, while Gemini 3.5 Flash costs $1.5/$9. For a typical workload of 10M input and 1.5M output tokens per month, that's $4.75 versus $28.50.
- Which model is better for coding, Gemini 3.1 Flash-Lite or Gemini 3.5 Flash?
- We don't yet track SWE-bench Verified results for both models; check their individual pages for coding-related scores.
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