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OpenAI: GPT-5.6 Sol vs StepFun: Step 3.7 Flash

Summary

GPT-5.6 Sol (medium) vs Step 3.7 Flash (low) benchmark comparison: GPT-5.6 Sol (medium) leads on average score with 9.4 vs 7.7. Step 3.7 Flash (low) has the lower benchmark cost at $0.341 vs $0.966. GPT-5.6 Sol (medium) is faster at 10.79s vs 15.74s, with pass rates of 90.5% vs 68.3%.

Recommended model: GPT-5.6 Sol (medium) - It has the strongest score in this comparison (9.4) and the best overall balance of cost and response time across all 2 models.

Last updated at: 2026-07-09

Metric GPT-5.6 Sol GPT-5.6 Sol medium Release: 2026-07-09 Step 3.7 Flash Step 3.7 Flash low Release: 2026-05-29
Score 9.4 7.7
Rank #5 #49
Reliability 10.0 10.0
Consistency 8.8 8.4
Tests Correct
Attempt pass rate 90.5% 68.3%
Flaky tests 3 4
Total Runs 63 63
Cost per result 5.682 2.840
Total Cost $0.966 $0.341
Input Price $5.000 / 1M $0.200 / 1M
Output Price $30.000 / 1M $1.150 / 1M
Total Input Tokens 34,218 40,101
Output Tokens 1,895 289,325
Reasoning Tokens 24,600 0
Response Time (avg) 10.79s 15.74s
Response Time (max) 79.40s 124.75s
Response Time (total) 226.57s 330.63s

Generation showcase

Hamster playing table tennis

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

#5 GPT-5.6 Sol

medium
Cost
$0.124
Time
57.2s
Tokens
4,199 tok

#49 Step 3.7 Flash

low
Invalid SVG
Cost
$0.004
Time
25.3s
Tokens
3,072 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
GPT-5.6 Sol 10.0 10.0 100.0% 0 2.81s 606 173 572
Step 3.7 Flash 8.7 7.9 91.7% 1 4.02s 756 10,896 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Sol 10.0 10.0 100.0% 0 9.40s 7,302 394 4,706
Step 3.7 Flash 8.2 7.2 88.9% 1 9.46s 7,437 18,685 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Sol 10.0 10.0 100.0% 0 12.13s 11,019 318 1,214
Step 3.7 Flash 10.0 10.0 100.0% 0 7.98s 13,683 6,426 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Sol 10.0 10.0 100.0% 0 1.38s 7,140 222 0
Step 3.7 Flash 7.3 5.8 83.3% 1 2.29s 7,398 2,667 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Sol 5.9 7.2 55.6% 1 47.86s 723 71 16,201
Step 3.7 Flash 5.3 7.2 44.4% 1 43.31s 828 104,487 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Sol 10.0 10.0 100.0% 0 3.48s 477 99 214
Step 3.7 Flash 3.4 9.3 0.0% 0 7.00s 525 4,604 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Sol 10.0 10.0 100.0% 0 2.50s 660 96 249
Step 3.7 Flash 9.8 10.0 100.0% 0 1.58s 735 1,857 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Sol 8.2 7.2 88.9% 1 2.98s 642 228 566
Step 3.7 Flash 5.5 9.9 33.3% 0 1.84s 756 3,564 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Sol 10.0 10.0 100.0% 0 6.30s 5,454 264 361
Step 3.7 Flash 10.0 10.0 100.0% 0 3.25s 7,746 1,360 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.6 Sol 4.7 1.6 66.7% 1 4.94s 195 30 517
Step 3.7 Flash 3.0 10.0 0.0% 0 124.75s 237 134,779 0

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