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OpenAI: GPT-5.2 vs xAI: Grok 4.5

GPT-5.2 (medium) leads on average score with 8.4 vs 8.3. GPT-5.2 (medium) has the lower benchmark cost at $0.951 vs $1.928. GPT-5.2 (medium) is faster at 22.62s vs 61.71s, with pass rates of 72.7% vs 78.8%.

Recommended modelGPT-5.2 (medium)It has the best score here (8.4), while costing about 2.0x less than Grok 4.5 (medium).

Last updated at: 2026-07-25

Metric GPT-5.2 GPT-5.2 medium Release: 2025-12-11 Grok 4.5 Grok 4.5 medium Release: 2026-07-08
Score 8.4 8.3
Rank #27 #28
Reliability 10.0 10.0
Consistency 8.5 8.9
Tests Correct
Attempt pass rate 72.7% 78.8%
Flaky tests 4 3
Total Runs 66 66
Cost per result 6.791 12.049
Total Cost $0.951 $1.928
Input Price $1.750 / 1M $2.000 / 1M
Output Price $14.000 / 1M $6.000 / 1M
Total Input Tokens 105,004 122,146
Output Tokens 9,914 5,514
Reasoning Tokens 44,868 275,053
Response Time (avg) 22.62s 61.71s
Response Time (max) 102.93s 436.38s
Response Time (total) 339.28s 1357.56s

Hamster playing table tennis

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

#27 GPT-5.2

medium
Cost
$0.047
Time
49.2s
Tokens
3,396 tok

#28 xAI: 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-5.2 10.0 10.0 100.0% 0 22.73s 7,302 511 11,912
Grok 4.5 7.6 7.2 77.8% 1 155.69s 9,579 390 104,634

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