Gemini 1.5 Pro vs Gemini 3.1 Flash-Lite

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

Quick Verdict

Gemini 1.5 Pro wins overall with a score of 54 vs 53 (1 point difference).Gemini 1.5 Pro wins 4 out of 4 categories.

Knowledge

Gemini 1.5 Pro

Gemini 1.5 Pro

62.5

Gemini 3.1 Flash-Lite

60.8

64
MMLU
63
64
GPQA
62
62
SuperGPQA
60
60
OpenBookQA
58

Coding

Gemini 1.5 Pro

Gemini 1.5 Pro

56

Gemini 3.1 Flash-Lite

55

56
HumanEval
55

Mathematics

Gemini 1.5 Pro

Gemini 1.5 Pro

63

Gemini 3.1 Flash-Lite

62

64
AIME 2023
63
66
AIME 2024
65
65
AIME 2025
64
60
HMMT Feb 2023
59
62
HMMT Feb 2024
61
61
HMMT Feb 2025
60
63
BRUMO 2025
62

Reasoning

Gemini 1.5 Pro

Gemini 1.5 Pro

61

Gemini 3.1 Flash-Lite

59

62
SimpleQA
60
60
MuSR
58

Frequently Asked Questions

Which is better, Gemini 1.5 Pro or Gemini 3.1 Flash-Lite?

Gemini 1.5 Pro scores higher overall with 54 vs 53, a difference of 1 points across all benchmarks.

Which is better for knowledge tasks, Gemini 1.5 Pro or Gemini 3.1 Flash-Lite?

Gemini 1.5 Pro leads in knowledge tasks with an average score of 62.5 vs 60.8.

Which is better for coding, Gemini 1.5 Pro or Gemini 3.1 Flash-Lite?

Gemini 1.5 Pro leads in coding with an average score of 56 vs 55.

Which is better for math, Gemini 1.5 Pro or Gemini 3.1 Flash-Lite?

Gemini 1.5 Pro leads in math with an average score of 63 vs 62.

Which is better for reasoning, Gemini 1.5 Pro or Gemini 3.1 Flash-Lite?

Gemini 1.5 Pro leads in reasoning with an average score of 61 vs 59.