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Google: Gemma 4 31B vs OpenAI: GPT-5 Nano

Summary

Gemma 4 31B vs GPT-5 Nano benchmark comparison: GPT-5 Nano leads on average score with 6.7 vs 6.3. Gemma 4 31B has the lower benchmark cost at $0.033 vs $0.081. GPT-5 Nano is faster at 42.51s vs 56.55s, with pass rates of 69.8% vs 57.1%.

Recommended model: Gemma 4 31B - Its score stays close to the best score here (6.3 vs 6.7), while costing about 2.5x less than GPT-5 Nano.

Last updated at: 2026-06-18

Metric Gemma 4 31B Gemma 4 31B medium Release: 2026-04-02 Free Available GPT-5 Nano GPT-5 Nano medium Release: 2025-08-07
Score 6.3 6.7
Rank #88 #79
Reliability 10.0 10.0
Consistency 9.4 7.3
Tests Correct
Attempt pass rate 69.8% 57.1%
Flaky tests 1 7
Total Runs 63 63
Cost per result 0.257 0.897
Total Cost $0.033 $0.081
Input Price $0.120 / 1M $0.050 / 1M
Output Price $0.350 / 1M $0.400 / 1M
Total Input Tokens 17,957 34,108
Output Tokens 22,356 5,464
Reasoning Tokens 65,726 192,064
Response Time (avg) 56.55s 42.51s
Response Time (max) 437.40s 204.02s
Response Time (total) 1074.41s 595.09s

Generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#88 Gemma 4 31B

medium
Cost
$0.002
Time
45.7s
Tokens
2,696 tok

#79 GPT-5 Nano

medium
Cost
$0.006
Time
108.5s
Tokens
13,209 tok

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) Input Tokens Output Tokens Reasoning Tokens
Gemma 4 31B 10.0 10.0 100.0% 0 12.89s 816 962 2,046
GPT-5 Nano 6.5 7.9 58.3% 1 25.50s 606 1,221 21,184
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemma 4 31B 4.3 5.8 22.2% 1 219.76s 5,568 11,098 33,212
GPT-5 Nano 7.0 7.7 55.6% 1 41.62s 7,305 740 41,152
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemma 4 31B 3.0 10.0 0.0% 0 0ms 0 0 0
GPT-5 Nano 10.0 10.0 100.0% 0 65.96s 11,019 578 17,984
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemma 4 31B 10.0 10.0 100.0% 0 21.11s 8,334 1,822 2,951
GPT-5 Nano 3.7 1.7 50.0% 2 21.42s 7,140 453 10,560
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemma 4 31B 7.7 10.0 66.7% 0 38.48s 876 4,349 8,985
GPT-5 Nano 5.2 4.4 55.6% 2 204.02s 619 237 64,448
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemma 4 31B 10.0 10.0 100.0% 0 9.57s 567 105 888
GPT-5 Nano 4.1 10.0 0.0% 0 17.51s 477 202 4,608
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemma 4 31B 10.0 10.0 100.0% 0 12.76s 777 533 2,035
GPT-5 Nano 9.8 10.0 100.0% 0 15.64s 660 312 4,736
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemma 4 31B 9.9 10.0 100.0% 0 26.91s 801 1,795 5,595
GPT-5 Nano 5.3 7.2 44.4% 1 20.63s 642 929 14,272
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemma 4 31B 3.0 10.0 0.0% 0 0ms 0 0 0
GPT-5 Nano 10.0 10.0 100.0% 0 33.30s 5,445 558 6,976
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemma 4 31B 3.0 10.0 0.0% 0 90.14s 218 1,692 10,014
GPT-5 Nano 3.0 10.0 0.0% 0 20.13s 195 234 6,144

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