Gemini 1.5 Flash vs Gemini 3.1 Flash-Lite
Google Gemini 1.5 Flash | Google Gemini 3.1 Flash-Lite | |
|---|---|---|
| Overview | ||
| Company | ||
| Release date | May 14 2024 | Mar 3 2026 |
| Access | Proprietary | Proprietary |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | — | 11% |
| Timeline | ||
| Release gap | Gemini 1.5 Flash shipped 658 days before Gemini 3.1 Flash-Lite | |
Which is better: Gemini 1.5 Flash or Gemini 3.1 Flash-Lite?
Gemini 1.5 Flash and Gemini 3.1 Flash-Lite don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Gemini 1.5 Flash shipped 658 days before Gemini 3.1 Flash-Lite, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
Direct benchmark comparisons are unavailable — Gemini 1.5 Flash and Gemini 3.1 Flash-Lite don't publish scores on any of the same benchmarks.
Frequently asked questions
Gemini 1.5 Flash was released by Google on May 14 2024.
Gemini 3.1 Flash-Lite was released by Google on Mar 3 2026.
Other comparisons
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