Google · llm model
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.
Reported Last verified · All models · JSON · Markdown
- ReleasedFeb 19, 2026
- LicenceProprietaryProprietary (API)
Modalities not verified
Key facts
Where Gemini 3.1 Pro sits in our data
- Released Feb 19, 2026 (week 8 of 2026), in February 2026. Other models in our data released that month: Claude Sonnet 4.6, GLM-5, Claude Opus 4.6.
- Google tools we cover: Gemini Notebook, Google ADK, Gemini CLI.
- All releases by date: AI model releases by month · new AI models this week. Choosing for code: best LLM for coding.
How Gemini 3.1 Pro differs from Gemini 3.1 Flash-Lite
Read from the recorded facts of the two models, not from a head-to-head test. We have not run either.
- Status is public preview, against generally available.
- Gemini 3.1 Pro came out 77 days before Gemini 3.1 Flash-Lite.
- Facts for the other model: Gemini 3.1 Flash-Lite.
What we tested
Nothing yet. We have not run Gemini 3.1 Pro ourselves, so every fact on this page is Reported from the sources below. When we do test it, the scope will be stated here and in our test logs. See methodology.
Not verified, left out
We could not confirm these on a vendor page, so we do not state them.
- Context window, output limits and modalities were not captured.
Sources
More from Google
- Gemini 3.1 Flash-Lite (May 7, 2026)
- Gemma 4 (Mar 31, 2026)
- Nano Banana Pro (May 28, 2026)
- Nano Banana 2 Lite (Jun 30, 2026)
- Gemini 3.5 Flash-Lite (Jul 21, 2026)
- Gemini 3.6 Flash (Jul 21, 2026)
- Gemini Robotics ER 2 (Jul 30, 2026)