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Google: Gemini 3 Flash Preview vs OpenAI: GPT-5 Nano

Summary

Gemini 3 Flash Preview vs GPT-5 Nano benchmark comparison: Gemini 3 Flash Preview leads on average score with 9.6 vs 6.7. GPT-5 Nano has the lower benchmark cost at $0.081 vs $0.667. Gemini 3 Flash Preview is faster at 18.64s vs 42.51s, with pass rates of 98.4% vs 57.1%.

Recommended model: Gemini 3 Flash Preview - It has the best score here (9.6), while responding about 2.3x faster than GPT-5 Nano.

Last updated at: 2026-07-02

Metric Gemini 3 Flash Preview Gemini 3 Flash Preview medium Release: 2025-12-17 GPT-5 Nano GPT-5 Nano medium Release: 2025-08-07
Score 9.6 6.7
Rank #2 #82
Reliability 10.0 10.0
Consistency 9.7 7.3
Tests Correct
Attempt pass rate 98.4% 57.1%
Flaky tests 1 7
Total Runs 63 63
Cost per result 3.335 0.897
Total Cost $0.667 $0.081
Input Price $0.500 / 1M $0.050 / 1M
Output Price $3.000 / 1M $0.400 / 1M
Total Input Tokens 37,017 34,108
Output Tokens 2,006 5,464
Reasoning Tokens 214,153 192,064
Response Time (avg) 18.64s 42.51s
Response Time (max) 117.26s 204.02s
Response Time (total) 391.35s 595.09s

Generation showcase

Hamster playing table tennis

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

#2 Gemini 3 Flash Preview

medium
Cost
$0.010
Time
17.9s
Tokens
3,236 tok

#82 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
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 3.88s 494 330 3,216
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
Gemini 3 Flash Preview 8.6 7.6 88.9% 1 84.40s 8,122 462 161,084
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
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 22.42s 12,873 351 10,485
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
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.43s 7,548 279 4,893
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
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 15.27s 633 12 21,684
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
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.19s 486 72 1,905
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
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.04s 615 72 2,709
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
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.05s 558 183 4,365
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
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 12.60s 5,532 234 1,487
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
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.50s 156 11 2,325
GPT-5 Nano 3.0 10.0 0.0% 0 20.13s 195 234 6,144

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