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OpenAI: GPT-5.4 vs OpenAI: GPT-5.5

Summary

GPT-5.4 vs GPT-5.5 benchmark comparison: GPT-5.5 leads on average score with 9.3 vs 5.8. GPT-5.4 has the lower benchmark cost at $0.122 vs $0.907. GPT-5.4 is faster at 1.42s vs 9.76s, with pass rates of 36.5% vs 85.7%.

Recommended model: GPT-5.5 - It has the strongest score in this comparison (9.3) and the best overall balance of cost and response time across all 2 models.

Last updated at: 2026-06-18

Metric GPT-5.4 GPT-5.4 none Release: 2026-03-05 GPT-5.5 GPT-5.5 low Release: 2026-04-24
Score 5.8 9.3
Rank #112 #4
Reliability 10.0 10.0
Consistency 9.2 10.0
Tests Correct
Attempt pass rate 36.5% 85.7%
Flaky tests 2 0
Total Runs 63 63
Cost per result 1.740 5.035
Total Cost $0.122 $0.907
Input Price $2.500 / 1M $5.000 / 1M
Output Price $15.000 / 1M $30.000 / 1M
Total Input Tokens 34,212 34,209
Output Tokens 2,417 2,046
Reasoning Tokens 0 22,460
Response Time (avg) 1.42s 9.76s
Response Time (max) 2.95s 56.19s
Response Time (total) 29.87s 204.92s

Generation showcase

Hamster playing table tennis

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

#112 GPT-5.4

none
Cost
$0.026
Time
18.1s
Tokens
1,792 tok

#4 GPT-5.5

low
Cost
$0.068
Time
37.0s
Tokens
2,339 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-5.4 3.2 8.0 8.3% 1 1.21s 606 406 0
GPT-5.5 10.0 10.0 100.0% 0 4.41s 606 238 1,020
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 5.5 10.0 33.3% 0 1.62s 7,305 516 0
GPT-5.5 10.0 10.0 100.0% 0 15.04s 7,302 423 6,402
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 3.0 10.0 0.0% 0 2.89s 11,019 291 0
GPT-5.5 10.0 10.0 100.0% 0 9.56s 11,019 303 717
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 10.0 10.0 100.0% 0 1.04s 7,140 222 0
GPT-5.5 10.0 10.0 100.0% 0 3.28s 7,140 228 157
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 5.3 7.2 44.4% 1 1.07s 723 50 0
GPT-5.5 5.3 10.0 33.3% 0 28.05s 723 69 11,609
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 4.4 9.9 0.0% 0 1.78s 477 184 0
GPT-5.5 10.0 10.0 100.0% 0 5.17s 477 133 245
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 6.5 10.0 50.0% 0 1.07s 660 81 0
GPT-5.5 9.9 10.0 100.0% 0 3.74s 660 93 415
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 5.6 9.8 33.3% 0 1.44s 642 381 0
GPT-5.5 10.0 10.0 100.0% 0 4.74s 642 279 954
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 10.0 10.0 100.0% 0 2.75s 5,445 246 0
GPT-5.5 10.0 10.0 100.0% 0 4.96s 5,445 250 101
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5.4 3.0 10.0 0.0% 0 990ms 195 40 0
GPT-5.5 3.0 10.0 0.0% 0 10.06s 195 30 840

Quick Compare

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