Compare / Gemini 3 Flash Preview vs GPT-5 Mini
Gemini 3 Flash Preview vs GPT-5 Mini
4 results from 3 sources that measured both models. Each row is in the source's own units; there is no overall winner.
| Benchmark | Metric | Gemini 3 Flash Preview | GPT-5 Mini |
|---|---|---|---|
| SimpleQA Verified (Epoch AI)reported | Correct answers% of questions | 66.8% | 21.6% |
| Vectara Hallucination Leaderboardreported | Answer rate% of documents | 99.8% | 99.9% |
| Vectara Hallucination Leaderboardreported | Hallucination rate% of summaries | 13.5% | 12.9% |
| Vending-Bench 2reported | Money after a yearUS dollars | $3,634.72 | $-31.18 |
Bold green marks the better value on that metric. Where a source reports ranges that overlap, the difference may not be meaningful; see the benchmark page for ranges.