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OpenAI: GPT-5 Nano vs HY3 Preview

Last updated at: 2026-04-23

Metric GPT-5 Nano GPT-5 Nano medium Release: 2025-08-07 HY3 Preview HY3 Preview none Release: 2026-04-22 Free Available
Score 6.3 4.7
Rank #62 #101
Consistency 6.5 9.0
Tests Correct
Attempt pass rate 59.3% 27.8%
Flaky tests 8 2
Total Runs 54 54
Cost per result 0.942 0.000
Total Cost $0.066 $0.000
Input Price $0.050 / 1M $0.000 / 1M
Output Price $0.400 / 1M $0.000 / 1M
Output Tokens 4,980 2,639
Reasoning Tokens 156,288 0
Response Time (avg) 44.13s 13.56s
Response Time (max) 204.02s 35.84s
Response Time (total) 485.47s 230.55s

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
GPT-5 Nano 6.5 7.9 58.3% 1 25.50s 1,221 21,184
HY3 Preview 4.8 10.0 25.0% 0 11.10s 770 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 6.7 3.5 66.7% 1 40.73s 480 12,992
HY3 Preview 2.3 1.1 33.3% 1 4.56s 333 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 10.0 10.0 100.0% 0 65.96s 578 17,984
HY3 Preview 3.0 10.0 0.0% 0 35.84s 281 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 3.7 1.7 50.0% 2 21.42s 453 10,560
HY3 Preview 6.5 10.0 50.0% 0 2.85s 117 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 5.2 4.4 55.6% 2 204.02s 237 64,448
HY3 Preview 3.6 7.2 22.2% 1 17.61s 27 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 4.1 10.0 0.0% 0 17.51s 202 4,608
HY3 Preview 4.1 10.0 0.0% 0 16.07s 150 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 8.5 6.8 83.3% 1 11.90s 382 4,096
HY3 Preview 6.3 10.0 50.0% 0 12.98s 365 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 5.3 7.2 44.4% 1 19.81s 869 13,440
HY3 Preview 3.3 10.0 0.0% 0 4.76s 359 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 10.0 10.0 100.0% 0 33.30s 558 6,976
HY3 Preview 10.0 10.0 100.0% 0 33.76s 237 0

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