GoogleGemini 3.5 Flash LiteVSOpenAIGPT-5 mini

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

Our Take

If your budget allows, Gemini 3.5 Flash Lite is the superior choice here, offering a clear benchmark advantage while carrying only a slight price premium (1.2x). We recommend choosing GPT-5 mini only if you need to optimize costs for very high-volume pipelines.

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Model Specs

Gemini 3.5 Flash Lite

Website

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+8.5%)

54.2%

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

Reasoning (gpqa-diamond)Winner (+2.4%)

84%

graduate-level science QA

Cost & Context

Cost (per 1M tokens)

$0.85Input: $0.30 | Output: $2.50

Context WindowLarger

1.05M tokens

Model Specs

GPT-5 mini

Website

Benchmarks & Scores

Coding (swe-bench-pro)

45.7%

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

Reasoning (gpqa-diamond)

81.6%

graduate-level science QA

Cost & Context

Cost (per 1M tokens)1.2x cheaper

$0.69Input: $0.25 | Output: $2.00

Context Window

400k tokens

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Frequently Asked Questions about Gemini 3.5 Flash Lite vs GPT-5 mini

GPT-5 mini is cheaper than Gemini 3.5 Flash Lite. GPT-5 mini has a blended cost of $0.69/1M tokens, which is about 1.2x cheaper than Gemini 3.5 Flash Lite at $0.85/1M 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 GPT-5 mini which scores 45.7%.

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