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OpenAI: GPT-5.4 Nano vs StepFun: Step 3.7 Flash

Last updated at: 2026-05-29

Metric GPT-5.4 Nano GPT-5.4 Nano medium Release: 2026-03-17 Step 3.7 Flash Step 3.7 Flash high Release: 2026-05-29
Score 7.2 7.1
Rank #72 #74
Reliability 10.0 10.0
Consistency 8.8 8.2
Tests Correct
Attempt pass rate 63.3% 65.8%
Flaky tests 3 4
Total Runs 60 60
Cost per result 0.900 8.723
Total Cost $0.099 $0.960
Input Price $0.200 / 1M $0.200 / 1M
Output Price $1.250 / 1M $1.150 / 1M
Output Tokens 2,993 828,084
Reasoning Tokens 70,928 0
Response Time (avg) 11.79s 49.43s
Response Time (max) 94.06s 192.75s
Response Time (total) 235.81s 988.58s

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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-5.4 Nano 8.3 10.0 75.0% 0 4.52s 683 2,254
Step 3.7 Flash 10.0 10.0 100.0% 0 13.40s 42,656 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 6.8 6.2 66.7% 1 21.10s 495 15,186
Step 3.7 Flash 3.6 4.6 25.0% 1 126.82s 164,069 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 9.8 10.0 100.0% 0 24.13s 349 5,719
Step 3.7 Flash 10.0 10.0 100.0% 0 13.01s 8,802 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 10.0 10.0 100.0% 0 2.54s 234 516
Step 3.7 Flash 10.0 10.0 100.0% 0 14.72s 23,113 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 5.9 7.2 55.6% 1 38.18s 60 43,325
Step 3.7 Flash 4.1 4.4 44.5% 2 149.64s 410,502 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 4.5 10.0 0.0% 0 4.15s 179 443
Step 3.7 Flash 5.5 10.0 0.0% 0 4.17s 2,862 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 9.8 10.0 100.0% 0 1.88s 95 521
Step 3.7 Flash 9.8 10.0 100.0% 0 1.52s 2,010 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 4.1 7.2 22.2% 1 3.79s 594 1,408
Step 3.7 Flash 5.3 7.2 44.4% 1 10.22s 25,422 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 10.0 10.0 100.0% 0 7.71s 234 382
Step 3.7 Flash 10.0 10.0 100.0% 0 2.79s 1,172 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 3.0 10.0 0.0% 0 4.81s 70 1,174
Step 3.7 Flash 3.0 10.0 0.0% 0 149.34s 147,476 0

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