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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 low Release: 2025-12-17
Score 9.6 8.8
Rank #2 #3
Consistency 10.0 9.5
Tests Correct
Attempt pass rate 94.4% 85.2%
Flaky tests 0 1
Total Runs 54 54
Cost per result 3.400 0.604
Total Cost $0.578 $0.091
Input Price $2.000 / 1M $0.500 / 1M
Output Price $12.000 / 1M $3.000 / 1M
Output Tokens 1,932 2,018
Reasoning Tokens 40,542 23,273
Response Time (avg) 15.96s 6.01s
Response Time (max) 40.61s 14.72s
Response Time (total) 175.52s 108.12s

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Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

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 3.48s 281 3,082
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 6.94s 426 2,717
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 3.0 10.0 0.0% 0 3.27s 326 0
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 9.40s 279 3,656
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 5.3 7.2 44.4% 1 8.05s 12 6,410
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 3.68s 120 981
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 9.9 10.0 100.0% 0 7.02s 71 2,752
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 6.11s 269 3,260
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 4.99s 234 415

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