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GPT-5.4 (medium) vs Grok 4.5 (medium)

GPT-5.4 (medium) leads on average score with 8.5 vs 8.5. GPT-5.4 (medium) has the lower benchmark cost at $1.560 vs $2.042. GPT-5.4 (medium) is faster at 22.85s vs 68.59s, with pass rates of 77.3% vs 83.3%.

Last updated at: 2026-09-23

Compared models

Rank
#56
Total Output Tokens
90,466
Response Time (avg)
22.85s
Total Cost
$1.560
Rank
#60
Total Output Tokens
299,460
Response Time (avg)
68.59s
Total Cost
$2.042
Recommended model GPT-5.4 (medium)

It has the best score here (8.5), while responding about 3.0x faster than Grok 4.5 (medium).

Detailed comparison

Metric GPT-5.4 GPT-5.4 medium Release: 2026-03-05 Grok 4.5 Grok 4.5 medium Release: 2026-07-08
Score 8.5 8.5
Rank #56 #60
Reliability 10.0 10.0
Consistency 8.6 8.9
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 77.3% 83.3%
Flaky tests 4 3
Total Runs 66 66
Cost per result 10.399 12.007
Total Cost $1.560 $2.042
Input Price $2.500 / 1M $2.000 / 1M
Output Price $15.000 / 1M $6.000 / 1M
Total Input Tokens 81,136 122,155
Output Tokens 6,155 5,514
Reasoning Tokens 84,311 293,946
Response Time (avg) 22.85s 68.59s
Response Time (max) 100.41s 436.38s
Response Time (total) 502.78s 1508.91s
Parameters ~1.5T total (~100B active) ~1.7T total (~170B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#56 GPT-5.4

medium
Cost
$0.214
Time
199.6s
Tokens
14,349 tok

#60 SpaceXAI: Grok 4.5

medium
Cost
$0.044
Time
59.4s
Tokens
7,512 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-5.4 8.8 7.8 88.9% 1 44.36s 7,305 433 24,216
Grok 4.5 7.6 7.2 77.8% 1 155.69s 9,579 390 104,634

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