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Gemini 2.5 Flash-Lite vs Gemini 3.1 Pro

Gemini 2.5 Flash-Lite (Google DeepMind) and Gemini 3.1 Pro (Google DeepMind) compared on benchmarks, pricing, context window, and use-case rankings.

AttributeGemini 2.5 Flash-LiteGoogle DeepMind · 1 in the newsGemini 3.1 ProGoogle DeepMind · 3 in the news
Scores
Intelligence (ECI)155
Coding665
Math474
Reasoning & Knowledge594
Agentic & Tools083
Specifications
DeveloperGoogle DeepMindGoogle DeepMind
FamilyGeminiGemini
ReleasedSep 25, 2025Feb 19, 2026
Parameters
AvailabilityAPI accessAPI access
Context window1M
Price — $/M input$0.10
Price — $/M output$0.40
Inputstext, image, file, audio, video
Outputstext
Benchmarks
AIME 2024/202553%96%
GPQA Diamond63%94%
Humanity's Last Exam6%46%
LiveCodeBench59%
MMLU-Pro76%
SciCode19%
WeirdML35%72%
τ²-bench18%
APEX34%
ARC-AGI98%
ARC-AGI-277%
FrontierMath37%
FrontierMath Tier 417%
GSO (code optimization)23%
METR task horizon6.4 h
SimpleBench80%
SimpleQA Verified77%
SWE-bench Verified76%
Terminal-Bench80%
WebDev Arena1461

Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.

Frequently asked questions

Which is better for coding, Gemini 2.5 Flash-Lite or Gemini 3.1 Pro?

Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Gemini 3.1 Pro ranks higher — 65th vs 6th percentile among the models tracked on Model Beat.

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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.