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

Last updated at: 2026-05-08

Metric Gemini 3.1 Flash Lite Gemini 3.1 Flash Lite high Release: 2026-05-08 Gemini 3.1 Pro Preview Gemini 3.1 Pro Preview medium Release: 2026-02-19
Score 7.5 9.6
Rank #51 #2
Reliability 9.8 10.0
Consistency 8.1 10.0
Tests Correct
Attempt pass rate 74.1% 94.7%
Flaky tests 4 0
Total Runs 54 57
Cost per result 18.579 3.300
Total Cost $2.044 $0.594
Input Price $0.250 / 1M $2.000 / 1M
Output Price $1.500 / 1M $12.000 / 1M
Output Tokens 1,984 1,944
Reasoning Tokens 1,355,583 41,839
Response Time (avg) 61.96s 15.15s
Response Time (max) 149.23s 40.61s
Response Time (total) 1115.31s 181.78s

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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 Flash Lite 9.4 10.0 100.0% 0 37.16s 100 130,598
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 7.90s 112 3,218
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 10.0 10.0 100.0% 0 137.63s 666 188,733
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 19.88s 405 4,201
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 10.0 10.0 100.0% 0 149.23s 327 198,243
Gemini 3.1 Pro Preview 9.5 10.0 100.0% 0 40.61s 432 9,281
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 10.0 10.0 100.0% 0 4.49s 279 7,351
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 7.72s 279 3,904
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 3.6 7.2 22.2% 1 139.90s 18 566,210
Gemini 3.1 Pro Preview 7.7 10.0 66.7% 0 32.73s 18 12,424
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 5.0 2.1 66.7% 1 45.69s 95 64,644
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 11.77s 108 1,179
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 7.3 5.8 83.3% 1 23.26s 52 3,549
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 9.56s 72 2,236
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 5.7 6.8 44.4% 1 50.83s 213 193,654
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 7.15s 232 3,117
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 10.0 10.0 100.0% 0 6.44s 234 2,601
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 23.15s 274 982
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite - - - - - - - -
Gemini 3.1 Pro Preview 10.0 10.0 100.0% 0 6.27s 12 1,297

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