GoogleGemini 3.1 Flash-LiteVSGoogleGemini 3.5 Flash Lite

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

Our Take

These models use different coding benchmarks — with Gemini 3.1 Flash-Lite evaluated on live-code-bench (good at single-file apps, building games & UIs, and scripting new logic) and Gemini 3.5 Flash Lite on swe-bench-pro (excellent at multi-file repositories, autonomous agents, and industrial codebases) — but Gemini 3.1 Flash-Lite holds a clear reasoning advantage (+2.9% on GPQA Diamond) while being cheaper or equal in cost to Gemini 3.5 Flash Lite. We recommend going with Gemini 3.1 Flash-Lite for superior overall value and reasoning capabilities.

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Model Specs

Gemini 3.1 Flash-Lite

Website

Benchmarks & Scores

Coding (live-code-bench)

72%

good at single-file apps, building games & UIs, and scripting new logic

Reasoning (gpqa-diamond)Winner (+2.9%)

86.9%

graduate-level science QA

Cost & Context

Cost (per 1M tokens)1.5x cheaper

$0.56Input: $0.25 | Output: $1.50

Context Window

1.05M tokens

Model Specs

Gemini 3.5 Flash Lite

Website

Benchmarks & Scores

Coding (swe-bench-pro)

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)

$0.85Input: $0.30 | Output: $2.50

Context Window

1.05M tokens

Read our data collection methodology

Frequently Asked Questions about Gemini 3.1 Flash-Lite vs Gemini 3.5 Flash Lite

Gemini 3.1 Flash-Lite is cheaper than Gemini 3.5 Flash Lite. Gemini 3.1 Flash-Lite has a blended cost of $0.56/1M tokens, which is about 1.5x cheaper than Gemini 3.5 Flash Lite at $0.85/1M tokens.

For coding tasks, Gemini 3.1 Flash-Lite scores 72% on live-code-bench (good at single-file apps, building games & UIs, and scripting new logic), while Gemini 3.5 Flash Lite scores 54.2% on swe-bench-pro (excellent at multi-file repositories, autonomous agents, and industrial codebases).

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