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DeepSeek: DeepSeek V4 Pro vs OpenAI: GPT-5.5

DeepSeek V4 Pro leads on average score with 6.9 vs 6.9. DeepSeek V4 Pro has the lower benchmark cost at $0.096 vs $0.544. GPT-5.5 is faster at 2.36s vs 11.55s, with pass rates of 51.5% vs 56.1%.

Recommended modelDeepSeek V4 ProIt has the best score here (6.9), while costing about 5.7x less than GPT-5.5.

Last updated at: 2026-07-22

Metric DeepSeek V4 Pro DeepSeek V4 Pro none Release: 2026-04-24 GPT-5.5 GPT-5.5 none Release: 2026-04-24
Score 6.9 6.9
Rank #86 #91
Reliability 10.0 10.0
Consistency 8.6 8.9
Tests Correct
Attempt pass rate 51.5% 56.1%
Flaky tests 4 3
Total Runs 66 66
Cost per result 0.954 4.945
Total Cost $0.096 $0.544
Input Price $0.435 / 1M $5.000 / 1M
Output Price $0.870 / 1M $30.000 / 1M
Total Input Tokens 148,069 79,285
Output Tokens 35,551 4,915
Reasoning Tokens 0 0
Response Time (avg) 11.55s 2.36s
Response Time (max) 119.44s 12.24s
Response Time (total) 254.11s 51.88s

Hamster playing table tennis

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

#86 DeepSeek V4 Pro

none
Invalid SVG
Cost
$0.000
Time
300.0s
Tokens
0 tok

#91 GPT-5.5

none
Cost
$0.090
Time
54.3s
Tokens
3,063 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
DeepSeek V4 Pro 5.6 10.0 33.3% 0 13.38s 7,275 5,500 0
GPT-5.5 5.5 10.0 33.3% 0 1.35s 7,305 462 0

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