# Gemini 3.1 Pro

Gemini 3.1 Pro is a Google language model (public preview) released Feb 19, 2026; Google's newest language model in our dataset is Gemini 4 Argon. Proprietary, API access only. Google's Gemini 3.1 Pro, released in preview on Feb 19, 2026 under the gemini-3.1-pro-preview endpoint. Verified against vendor sources on Oct 26, 2026.

Last verified: 2026-10-26 · Evidence: Reported · Canonical: https://theagenticweekly.com/models/gemini-3-1-pro · JSON: https://theagenticweekly.com/api/models/gemini-3-1-pro

## Key facts

| Fact | Value | Source |
|---|---|---|
| Vendor | Google |  |
| Released | Feb 19, 2026 | https://ai.google.dev/gemini-api/docs/changelog |
| API id | `gemini-3.1-pro-preview` | https://ai.google.dev/gemini-api/docs/models |
| Licence | Proprietary (API) | https://ai.google.dev/gemini-api/docs/models |

## What we tested

Nothing yet. We have not run Gemini 3.1 Pro ourselves, so every fact here is Reported from the sources below.

## Not verified, left out

- Context window, output limits and modalities were not captured.

## Sources

- [Gemini API changelog](https://ai.google.dev/gemini-api/docs/changelog)
- [Gemini API models list](https://ai.google.dev/gemini-api/docs/models)

Data licence: CC BY 4.0. Data: Agentic Weekly (https://theagenticweekly.com), CC BY 4.0.