benchlm.ai

Gemini 1.5 Pro vs Gemini 3 Flash

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

Quick Verdict

Gemini 3 Flash wins overall with a score of 58 vs 54 (4 point difference).Gemini 3 Flash wins 4 out of 4 categories.

Gemini 1.5 Pro

CreatorGoogle
TypeProprietary
Context2M
Score54

Gemini 3 Flash

CreatorGoogle
TypeProprietary
Context1M
Score58

Knowledge

Gemini 3 Flash

Gemini 1.5 Pro

62.5

Gemini 3 Flash

67.8

64
MMLU
70
64
GPQA
69
62
SuperGPQA
67
60
OpenBookQA
65

Coding

Gemini 3 Flash

Gemini 1.5 Pro

56

Gemini 3 Flash

62

56
HumanEval
62

Mathematics

Gemini 3 Flash

Gemini 1.5 Pro

63

Gemini 3 Flash

69

64
AIME 2023
70
66
AIME 2024
72
65
AIME 2025
71
60
HMMT Feb 2023
66
62
HMMT Feb 2024
68
61
HMMT Feb 2025
67
63
BRUMO 2025
69

Reasoning

Gemini 3 Flash

Gemini 1.5 Pro

61

Gemini 3 Flash

66

62
SimpleQA
67
60
MuSR
65

Frequently Asked Questions

Which is better, Gemini 1.5 Pro or Gemini 3 Flash?

Gemini 3 Flash scores higher overall with 58 vs 54, a difference of 4 points across all benchmarks.

Which is better for knowledge tasks, Gemini 1.5 Pro or Gemini 3 Flash?

Gemini 3 Flash leads in knowledge tasks with an average score of 67.8 vs 62.5.

Which is better for coding, Gemini 1.5 Pro or Gemini 3 Flash?

Gemini 3 Flash leads in coding with an average score of 62 vs 56.

Which is better for math, Gemini 1.5 Pro or Gemini 3 Flash?

Gemini 3 Flash leads in math with an average score of 69 vs 63.

Which is better for reasoning, Gemini 1.5 Pro or Gemini 3 Flash?

Gemini 3 Flash leads in reasoning with an average score of 66 vs 61.

Related Comparisons

Gemini 1.5 Pro vs GPT-5.4Gemini 1.5 Pro vs Gemini 3.1 ProGemini 1.5 Pro vs Claude Opus 4.6Gemini 1.5 Pro vs GPT-5.3 CodexGemini 1.5 Pro vs Grok 4.1Gemini 1.5 Pro vs GPT-5.2