benchlm.ai

Gemini 3.1 Flash-Lite vs GPT-OSS 120B

Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.

Quick Verdict

Gemini 3.1 Flash-Lite wins overall with a score of 53 vs 42 (11 point difference).Gemini 3.1 Flash-Lite wins 4 out of 4 categories.

Gemini 3.1 Flash-Lite

CreatorGoogle
TypeProprietary
Context1M
Score53

GPT-OSS 120B

CreatorOpenAI
TypeOpen Weight
Context128K
Score42

Knowledge

Gemini 3.1 Flash-Lite

Gemini 3.1 Flash-Lite

60.8

GPT-OSS 120B

48.8

63
MMLU
51
62
GPQA
50
60
SuperGPQA
48
58
OpenBookQA
46

Coding

Gemini 3.1 Flash-Lite

Gemini 3.1 Flash-Lite

55

GPT-OSS 120B

43

55
HumanEval
43

Mathematics

Gemini 3.1 Flash-Lite

Gemini 3.1 Flash-Lite

62

GPT-OSS 120B

50

63
AIME 2023
51
65
AIME 2024
53
64
AIME 2025
52
59
HMMT Feb 2023
47
61
HMMT Feb 2024
49
60
HMMT Feb 2025
48
62
BRUMO 2025
50

Reasoning

Gemini 3.1 Flash-Lite

Gemini 3.1 Flash-Lite

59

GPT-OSS 120B

48

60
SimpleQA
49
58
MuSR
47

Frequently Asked Questions

Which is better, Gemini 3.1 Flash-Lite or GPT-OSS 120B?

Gemini 3.1 Flash-Lite scores higher overall with 53 vs 42, a difference of 11 points across all benchmarks.

Which is better for knowledge tasks, Gemini 3.1 Flash-Lite or GPT-OSS 120B?

Gemini 3.1 Flash-Lite leads in knowledge tasks with an average score of 60.8 vs 48.8.

Which is better for coding, Gemini 3.1 Flash-Lite or GPT-OSS 120B?

Gemini 3.1 Flash-Lite leads in coding with an average score of 55 vs 43.

Which is better for math, Gemini 3.1 Flash-Lite or GPT-OSS 120B?

Gemini 3.1 Flash-Lite leads in math with an average score of 62 vs 50.

Which is better for reasoning, Gemini 3.1 Flash-Lite or GPT-OSS 120B?

Gemini 3.1 Flash-Lite leads in reasoning with an average score of 59 vs 48.

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