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Google: Gemini 3.1 Pro Preview vs Google: Gemini 3 Flash Preview

Last updated at: 2026-04-14

Metric Gemini 3.1 Pro Preview Gemini 3.1 Pro Preview medium Release: 2026-02-19 Gemini 3 Flash Preview Gemini 3 Flash Preview medium Release: 2025-12-17
Score 9.6 10.0
Rank #2 #1
Consistency 10.0 10.0
Tests Correct
Attempt pass rate 94.4% 100.0%
Flaky tests 0 0
Total Runs 54 54
Cost per result 3.400 1.740
Total Cost $0.578 $0.314
Input Price $2.000 / 1M $0.500 / 1M
Output Price $12.000 / 1M $3.000 / 1M
Output Tokens 1,932 2,072
Reasoning Tokens 40,542 97,041
Response Time (avg) 15.96s 17.60s
Response Time (max) 40.61s 79.71s
Response Time (total) 175.52s 193.57s

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Score vs Total Cost

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Score vs Response Time (avg)

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Score vs Total Output Tokens

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 7.90s 112 3,218
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.13s 305 3,490
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 19.88s 405 4,201
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 79.71s 432 48,771
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Pro Preview 9.5 10.0 100.0% 0 40.61s 432 9,281
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 50.16s 351 12,645
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 7.72s 279 3,904
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.72s 279 5,333
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Pro Preview 7.7 10.0 66.7% 0 32.73s 18 12,424
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 21.12s 12 14,908
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 11.77s 108 1,179
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.09s 111 1,285
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 9.56s 72 2,236
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 6.10s 72 4,558
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 7.15s 232 3,117
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.43s 276 4,921
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 23.15s 274 982
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 10.55s 234 1,130

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