> Gemini 3.1 Flash-Lite is a closed AI model from Google, released 3 Mar 2026. Index score 141 (GPT-4 = 100), rank 85 of 229 ranked models. API price $0.25 in / $1.5 out per million tokens, 1.05M context.

[Models](https://themodelindex.org/models/) /[Google](https://themodelindex.org/labs/google/)

# Gemini 3.1 Flash-Lite

Google

Released 3 Mar 2026

Closed

Small / fast

Date verified

[Compare](https://themodelindex.org/compare/gemini-3-1-flash-lite-vs-kimi-k2-5/) [Announcement](https://blog.google/innovation-and-ai/models-and-research/gemini-models/gemini-3-1-flash-lite/)

141129–153

Index score

#85 of 229 models

3/ 8

Core tests taken

2 of 6 areas · plus 6 anchor tests

−29

Versus the frontier at release

best then: GPT-5.3-Codex

Replaced by [Gemini 3.5 Flash-Lite](https://themodelindex.org/models/gemini-3-5-flash-lite/)

$0.25/ $1.5

Price per million tokens

input / output, list price

1.05M

Context window

tokens it reads at once

## Where it sits · on the frontier

_Chart: Model Index score of every scored model since late 2022, with the best closed and best open model over time_

o3 reached this score 11 months earlier.

## Test results · by area · tick = best by any model

Show 5 anchor tests

Reasoning & knowledge

evidence

GPQA Diamond

82%

Humanity's Last Exam

9%

Maths

evidence

FrontierMath T1-3

28%

Coding

evidence

SWE-bench Verified

no result

Terminal-Bench

no result

Agents

evidence

APEX-Agents

no result

Novel problems

no evidence yet

ARC-AGI-2

no result

Long tasks

no evidence yet

METR time horizon

no result

Independent results from the Epoch AI benchmarking hub, best reasoning setting. The core tests are shown here; anchor tests also inform the score and can be shown above.

## What others say · rank on each leaderboard

The Model Index

independent tests, our method

#85

of 219 · 141

LMArena · Creative writing

creative writing

#79

of 386 · 1413

LMArena · Maths

maths questions in chat

#87

of 373 · 1435

LMArena · Text

overall chat quality, judged by people

#95

of 388 · 1433

LMArena · Coding

coding questions in chat

#127

of 383 · 1458

Epoch Capabilities Index

overall capability from many benchmarks

#82

of 239 · 144.4

LMArena · Vision

understanding images

#56

of 149 · 1235

LMArena · WebDev

building web apps and front ends

#108

of 123 · 1256

Further left is better. Leaderboards measure different things: LMArena is people voting blind between two answers, the others are test scores. Click any row for the source.

## Best at · top three among current models

Replaced by Gemini 3.5 Flash-Lite; it no longer leads any category among current models.

Where this model places in the top three of today's models, on category leaderboards and on our core tests.

## Where to use it · prices checked 1 Oct 2026

#### From the lab

Gemini

app · subscription

↗

Google AI Studio

API

↗

#### API providers · 2 · per million tokens, in / out

G

Google

$0.45 / $2.7

cheapest

G

Google AI Studio

$0.45 / $2.7

↗

Provider prices come from OpenRouter's live listing; going direct to a provider can differ. Subscriptions are the lab's own apps.

## Facts and sources

Released

3 Mar 2026

Announcement

[blog.google ↗](https://blog.google/innovation-and-ai/models-and-research/gemini-models/gemini-3-1-flash-lite/)

Release entry

Gemini 3.1 Flash-Lite

Scored as

Gemini 3.1 Flash-Lite

Artificial Analysis index

–

Output speed

–

Hugging Face

closed weights

## Google releases · around this one

Gemini 3 Flash

Closed

17 DEC 2025

index 158

Gemini 3.1 Pro

Closed

19 FEB 2026

index 166

Gemini 3.1 Flash-Lite

Closed

3 MAR 2026

index 141

Gemma 4

Open

2 APR 2026

index 138

Gemini 3.5 Flash

Closed

19 MAY 2026

index 165

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Source: https://themodelindex.org/models/gemini-3-1-flash-lite/ · The Model Index · data as of 2026-10-01