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OpenAI: GPT-5.3 Chat vs StepFun: Step 3.7 Flash

Last updated at: 2026-05-29

Metric GPT-5.3 Chat GPT-5.3 Chat none Release: 2026-03-03 Step 3.7 Flash Step 3.7 Flash low Release: 2026-05-29
Score 7.4 7.4
Rank #57 #60
Reliability 10.0 10.0
Consistency 8.4 8.7
Tests Correct
Attempt pass rate 68.3% 68.3%
Flaky tests 4 3
Total Runs 60 60
Cost per result 3.350 2.796
Total Cost $0.402 $0.336
Input Price $1.750 / 1M $0.200 / 1M
Output Price $14.000 / 1M $1.150 / 1M
Output Tokens 24,757 285,209
Reasoning Tokens 0 0
Response Time (avg) 6.13s 16.06s
Response Time (max) 18.33s 124.75s
Response Time (total) 122.61s 321.11s

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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-5.3 Chat 6.7 8.1 58.3% 1 3.86s 3,167 0
Step 3.7 Flash 8.7 7.9 91.7% 1 4.02s 10,896 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.3 Chat 6.9 6.2 66.7% 1 10.52s 4,772 0
Step 3.7 Flash 10.0 10.0 100.0% 0 9.43s 14,569 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.3 Chat 10.0 10.0 100.0% 0 11.96s 2,614 0
Step 3.7 Flash 10.0 10.0 100.0% 0 7.98s 6,426 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.3 Chat 10.0 10.0 100.0% 0 2.21s 942 0
Step 3.7 Flash 7.3 5.8 83.3% 1 2.29s 2,667 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.3 Chat 3.5 4.4 33.3% 2 13.01s 8,264 0
Step 3.7 Flash 5.3 7.2 44.4% 1 43.31s 104,487 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.3 Chat 4.6 10.0 0.0% 0 1.99s 319 0
Step 3.7 Flash 3.4 9.3 0.0% 0 7.00s 4,604 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.3 Chat 9.8 10.0 100.0% 0 3.51s 1,491 0
Step 3.7 Flash 9.8 10.0 100.0% 0 1.58s 1,857 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.3 Chat 10.0 10.0 100.0% 0 2.99s 1,758 0
Step 3.7 Flash 5.5 9.9 33.3% 0 1.84s 3,564 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.3 Chat 10.0 10.0 100.0% 0 8.36s 861 0
Step 3.7 Flash 10.0 10.0 100.0% 0 3.25s 1,360 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.3 Chat 3.0 10.0 0.0% 0 4.38s 569 0
Step 3.7 Flash 3.0 10.0 0.0% 0 124.75s 134,779 0

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