Gemini 3.1 Pro Preview
Gemini 3.1 Pro Preview is Google's strongest available model, evaluated by Artificial Analysis on February 19, 2026, when it led the Intelligence Index. Priced at $2 per million input tokens and $12 per million output under 200K context, it now scores 48 as newer frontier models have passed it.
Spec sheet
| Maker | |
|---|---|
| Released | 2026-02-19 |
| API ID | gemini-3.1-pro-preview |
| Parameters | Not disclosed |
| Context window | 1M tokens |
| Modalities in | text, image, audio, video |
| Modalities out | text |
| API availability | Gemini API · Google Vertex AI · Google AI Studio (unverified) |
| Pricing (per MTok) | $2 in / $12 outas of · source · Rates for prompts ≤200K tokens; higher above. |
Benchmarks
| Benchmark | Score | Measured | Source |
|---|---|---|---|
| AA Intelligence Index | 48 | artificialanalysis.ai |
Dashed values are vendor-published and not yet reproduced in our harness — methodology.
Changelog
- Gemini 3.1 Pro Preview evaluated — led the AA Intelligence Index at debutsource
Head-to-head
Profile published August 11, 2026; data last changed August 11, 2026. Every value carries its own measurement or verification date. Flagged values are best-known public figures pending confirmation.