GoogleGemini 3 FlashVSGoogleGemini 3.5 Flash Lite

Analysis by:the whichllmmodel Editorial Team|Updated: June 2026

Our Take

Gemini 3.5 Flash Lite is the superior choice here. It holds a 13.0% average lead in benchmarks while actually being more cost-effective (saving 1.3x on API costs compared to Gemini 3 Flash). Unless you have specific provider lock-in, go with Gemini 3.5 Flash Lite.

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Model Specs

Gemini 3 Flash

Website

Benchmarks & Scores

Coding (swe-bench-pro)

34.6%

excellent at multi-file repositories, autonomous agents, and industrial codebases

Reasoning (gpqa-diamond)Winner (+6.4%)

90.4%

graduate-level science QA

Cost & Context

Cost (per 1M tokens)

$1.13Input: $0.50 | Output: $3.00

Context Window

1.05M tokens

Model Specs

Gemini 3.5 Flash Lite

Website

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+19.6%)

54.2%

excellent at multi-file repositories, autonomous agents, and industrial codebases

Reasoning (gpqa-diamond)

84%

graduate-level science QA

Cost & Context

Cost (per 1M tokens)1.3x cheaper

$0.85Input: $0.30 | Output: $2.50

Context Window

1.05M tokens

Read our data collection methodology

Frequently Asked Questions about Gemini 3 Flash vs Gemini 3.5 Flash Lite

Gemini 3.5 Flash Lite is cheaper than Gemini 3 Flash. Gemini 3.5 Flash Lite has a blended cost of $0.85/1M tokens, which is about 1.3x cheaper than Gemini 3 Flash at $1.13/1M tokens.

Gemini 3.5 Flash Lite is better for coding tasks on this benchmark. It scores 54.2% on swe-bench-pro (excellent at multi-file repositories, autonomous agents, and industrial codebases) compared to Gemini 3 Flash which scores 34.6%.

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