Gemini 3.1 Flash-Lite

Google Gemini · Gemini 3

Google Gemini released Gemini 3.1 Flash-Lite on March 3, 2026.

Gemini 3.1 Flash-Lite is the Google model launched in preview on March 3, 2026 as the first Flash-Lite model in the Gemini 3 series and its fastest, most cost-efficient Gemini 3 model at the time. It targets high-volume developer workloads such as translation, content moderation, generating interfaces and dashboards, and simulations, with thinking levels in AI Studio and Vertex AI. Pricing is $0.25 per million input tokens and $1.50 per million output tokens. The generally available gemini-3.1-flash-lite followed on May 7, 2026, and the preview model was shut down on May 25.

Gemini 3.1 Flash-Lite at a glance

Released
API model id
gemini-3.1-flash-litegemini-3.1-flash-lite-preview
Available on
Gemini APIVertex AI
Announcement
blog.google

What changed

Google reported an Arena Elo of 1432, 86.9% on GPQA Diamond and 76.8% on MMMU Pro.

Against Gemini 2.5 Flash it has a 2.5x faster time to first answer token and 45% higher output speed (Artificial Analysis), with similar or better quality.

New to model names and version numbers? Read how AI labs version their models.

Gemini 3.1 Flash-Lite release timeline

The launch and every later Google Gemini release that mentions Gemini 3.1 Flash-Lite, oldest first.

Gemini 3.1 Flash-Lite FAQ

When was Gemini 3.1 Flash-Lite released?

Google Gemini released Gemini 3.1 Flash-Lite on March 3, 2026. The launch entry below links to the official announcement.

Where is Gemini 3.1 Flash-Lite available?

Gemini 3.1 Flash-Lite is available on Gemini API and Vertex AI. Later availability changes are listed under follow-up releases on this page.

What is the Gemini 3.1 Flash-Lite API model id?

Use gemini-3.1-flash-lite and gemini-3.1-flash-lite-preview in Google Gemini's API.

Other Google Gemini models

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