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OpenAI: GPT-5.5 vs OpenAI: GPT-5.6 Sol

The average score is effectively tied at 6.9 vs 6.9. GPT-5.6 Sol has the lower benchmark cost at $0.524 vs $0.544. GPT-5.6 Sol is faster at 2.16s vs 2.36s, with pass rates of 56.1% vs 59.1%.

Recommended modelGPT-5.6 SolIt has the strongest score in this comparison (6.9) and the best overall balance of cost and response time across all 2 models.

Last updated at: 2026-07-24

Metric GPT-5.5 GPT-5.5 none Release: 2026-04-24 GPT-5.6 Sol GPT-5.6 Sol none Release: 2026-07-09
Score 6.9 6.9
Rank #91 #87
Reliability 10.0 10.0
Consistency 8.9 9.0
Tests Correct
Attempt pass rate 56.1% 59.1%
Flaky tests 3 3
Total Runs 66 66
Cost per result 4.945 4.761
Total Cost $0.544 $0.524
Input Price $5.000 / 1M $5.000 / 1M
Output Price $30.000 / 1M $30.000 / 1M
Total Input Tokens 79,285 78,593
Output Tokens 4,915 4,357
Reasoning Tokens 0 0
Response Time (avg) 2.36s 2.16s
Response Time (max) 12.24s 12.81s
Response Time (total) 51.88s 47.62s

Hamster playing table tennis

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

#91 GPT-5.5

none
Cost
$0.090
Time
54.3s
Tokens
3,063 tok

#87 GPT-5.6 Sol

none
Cost
$0.116
Time
78.7s
Tokens
3,944 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

Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.5 5.5 10.0 33.3% 0 1.35s 7,305 462 0
GPT-5.6 Sol 5.5 10.0 33.3% 0 1.39s 7,302 390 0

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