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Google: Gemini 3.1 Pro Preview vs OpenAI: GPT-5 Nano

Last updated at: 2026-04-29

Metric Gemini 3.1 Pro Preview Gemini 3.1 Pro Preview medium Release: 2026-02-19 GPT-5 Nano GPT-5 Nano medium Release: 2025-08-07
Score 9.6 6.3
Rank #2 #74
Reliability N/A N/A
Consistency 10.0 6.5
Tests Correct
Attempt pass rate 94.4% 59.3%
Flaky tests 0 8
Total Runs 54 54
Cost per result 3.400 0.942
Total Cost $0.578 $0.066
Input Price $2.000 / 1M $0.050 / 1M
Output Price $12.000 / 1M $0.400 / 1M
Output Tokens 1,932 4,980
Reasoning Tokens 40,542 156,288
Response Time (avg) 15.96s 44.13s
Response Time (max) 40.61s 204.02s
Response Time (total) 175.52s 485.47s

Top Models by Score

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
GPT-5 Nano 6.5 7.9 58.3% 1 25.50s 1,221 21,184
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
GPT-5 Nano 6.7 3.5 66.7% 1 40.73s 480 12,992
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
GPT-5 Nano 10.0 10.0 100.0% 0 65.96s 578 17,984
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
GPT-5 Nano 3.7 1.7 50.0% 2 21.42s 453 10,560
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
GPT-5 Nano 5.2 4.4 55.6% 2 204.02s 237 64,448
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
GPT-5 Nano 4.1 10.0 0.0% 0 17.51s 202 4,608
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
GPT-5 Nano 8.5 6.8 83.3% 1 11.90s 382 4,096
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
GPT-5 Nano 5.3 7.2 44.4% 1 19.81s 869 13,440
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
GPT-5 Nano 10.0 10.0 100.0% 0 33.30s 558 6,976

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