Gemini 3.1 Flash-Lite vs Gemini 3 Pro Deep Think

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

Quick Verdict

Gemini 3 Pro Deep Think wins overall with a score of 81 vs 53 (28 point difference).Gemini 3 Pro Deep Think wins 4 out of 4 categories.

Knowledge

Gemini 3 Pro Deep Think

Gemini 3.1 Flash-Lite

60.8

Gemini 3 Pro Deep Think

96

63
MMLU
99
62
GPQA
97
60
SuperGPQA
95
58
OpenBookQA
93

Coding

Gemini 3 Pro Deep Think

Gemini 3.1 Flash-Lite

55

Gemini 3 Pro Deep Think

91

55
HumanEval
91

Mathematics

Gemini 3 Pro Deep Think

Gemini 3.1 Flash-Lite

62

Gemini 3 Pro Deep Think

97.1

63
AIME 2023
99
65
AIME 2024
99
64
AIME 2025
98
59
HMMT Feb 2023
95
61
HMMT Feb 2024
97
60
HMMT Feb 2025
96
62
BRUMO 2025
96

Reasoning

Gemini 3 Pro Deep Think

Gemini 3.1 Flash-Lite

59

Gemini 3 Pro Deep Think

94

60
SimpleQA
95
58
MuSR
93

Frequently Asked Questions

Which is better, Gemini 3.1 Flash-Lite or Gemini 3 Pro Deep Think?

Gemini 3 Pro Deep Think scores higher overall with 81 vs 53, a difference of 28 points across all benchmarks.

Which is better for knowledge tasks, Gemini 3.1 Flash-Lite or Gemini 3 Pro Deep Think?

Gemini 3 Pro Deep Think leads in knowledge tasks with an average score of 96 vs 60.8.

Which is better for coding, Gemini 3.1 Flash-Lite or Gemini 3 Pro Deep Think?

Gemini 3 Pro Deep Think leads in coding with an average score of 91 vs 55.

Which is better for math, Gemini 3.1 Flash-Lite or Gemini 3 Pro Deep Think?

Gemini 3 Pro Deep Think leads in math with an average score of 97.1 vs 62.

Which is better for reasoning, Gemini 3.1 Flash-Lite or Gemini 3 Pro Deep Think?

Gemini 3 Pro Deep Think leads in reasoning with an average score of 94 vs 59.