AI model comparison

Gemini 3.5 Flash Lite vs Gemini 3 Flash Preview

Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.

Gemini 3.5 Flash Lite is a high-efficiency model from Google with upgraded agentic capabilities.

Input / 1M
$0.30
Output / 1M
$2.50
Context
1.05M

Gemini 3 Flash Preview is a high speed, high value thinking model designed for agentic workflows, multi turn chat, and coding assistance.

Input / 1M
$0.50
Output / 1M
$3
Context
1.05M

At a glance

Quick verdict

How the two models stack up on the things people ask about most.

Lower price

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Gemini 3.5 Flash Lite

1.4x cheaper for a typical chat

Higher intelligence score

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Gemini 3 Flash Preview

26.3 vs 22.2 on Artificial Analysis

Larger context window

Tie

1.05M vs 1.05M tokens

Newer release

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Gemini 3.5 Flash Lite

Released July 21, 2026

Benchmarks

Benchmark scores

Independent scores from Artificial Analysis. Higher is better.

Intelligence index

google logoGemini 3.5 Flash Lite22.2
google logoGemini 3 Flash Preview26.3

Coding index

google logoGemini 3.5 Flash Lite49.3
google logoGemini 3 Flash PreviewNot available

Agentic index

google logoGemini 3.5 Flash Lite14.3
google logoGemini 3 Flash PreviewNot available

Pricing

Gemini 3.5 Flash Lite vs Gemini 3 Flash Preview API pricing

Per-token API rates. Cheaper option highlighted.

Metricgoogle logoGemini 3.5 Flash Litegoogle logoGemini 3 Flash Preview
Input tokensPer 1M tokens$0.30$0.50
Output tokensPer 1M tokens$2.50$3
Cached input (read)Per 1M tokens$0.03$0.05
Cache writePer 1M tokens$0.08$0.08
Web searchPer request$0.014$0.014

What it costs in practice

Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.

Chat message

2K in, 500 out

google logoGemini 3.5 Flash Lite$1.85
google logoGemini 3 Flash Preview$2.50

Coding task

30K in, 4K out

google logoGemini 3.5 Flash Lite$19$10.90 cached
google logoGemini 3 Flash Preview$27$13.50 cached

Long document summary

150K in, 2K out

google logoGemini 3.5 Flash Lite$50$9.50 cached
google logoGemini 3 Flash Preview$81$13.50 cached

Specs

Context window and capabilities

How much each model can read, how much it can write, and what it accepts as input.

Metricgoogle logoGemini 3.5 Flash Litegoogle logoGemini 3 Flash Preview
Context window1.05M tokens1.05M tokens
Max output66K tokens66K tokens
Input typesAudio, File, Image, Text, VideoAudio, File, Image, Text, Video
Output typesTextText
Reasoning effort levelsHigh, Medium, Low, MinimalHigh, Medium, Low, Minimal
Default reasoning effortMinimalMedium
Release dateJuly 21, 2026December 17, 2025

Features

Supported features

API features available for each model.

Metricgoogle logoGemini 3.5 Flash Litegoogle logoGemini 3 Flash Preview
Tool callingSupportedSupported
Structured outputsSupportedSupported
JSON modeSupportedSupported
ReasoningSupportedSupported
TemperatureSupportedSupported
Stop sequencesSupportedSupported
Deterministic seedSupportedSupported
Verbosity controlNot supportedNot supported

Our take

Gemini 3.5 Flash Lite is 1.4x cheaper for a typical chat. Gemini 3 Flash Preview scores higher on the Artificial Analysis Intelligence Index (26.3 vs 22.2). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.

FAQ

Frequently asked questions

Is Gemini 3.5 Flash Lite or Gemini 3 Flash Preview cheaper?

Gemini 3.5 Flash Lite is cheaper for a typical chat (2K input tokens and 500 output tokens). Gemini 3.5 Flash Lite costs $0.30 per 1M input tokens and $2.50 per 1M output tokens, while Gemini 3 Flash Preview costs $0.50 per 1M input tokens and $3 per 1M output tokens.

Which has a bigger context window, Gemini 3.5 Flash Lite or Gemini 3 Flash Preview?

Gemini 3.5 Flash Lite supports up to 1.05M tokens of context, compared with 1.05M for Gemini 3 Flash Preview.

Is Gemini 3.5 Flash Lite smarter than Gemini 3 Flash Preview?

On the Artificial Analysis Intelligence Index, Gemini 3.5 Flash Lite scores 22.2 and Gemini 3 Flash Preview scores 26.3, putting Gemini 3 Flash Preview ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.

Can I use Gemini 3.5 Flash Lite and Gemini 3 Flash Preview at the same time?

Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Gemini 3.5 Flash Lite and Gemini 3 Flash Preview answer side by side and keep the better response.

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Why choose? Ask both.

Send one prompt to Gemini 3.5 Flash Lite and Gemini 3 Flash Preview at the same time. Compare the answers side by side and keep the best one.