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GPT-5.2 Chat vs Grok 4.5 (medium)

Grok 4.5 (medium) leads on average score with 8.5 vs 7.9. GPT-5.2 Chat has the lower benchmark cost at $0.594 vs $2.042. GPT-5.2 Chat is faster at 7.73s vs 68.59s, with pass rates of 69.7% vs 83.3%.

Last updated at: 2026-08-20

Rank
#59
Total Output Tokens
29,742
Response Time (avg)
7.73s
Total Cost
$0.594
Rank
#37
Total Output Tokens
299,460
Response Time (avg)
68.59s
Total Cost
$2.042
Recommended model GPT-5.2 Chat

Its score stays close to the best score here (7.9 vs 8.5), while costing about 3.4x less than Grok 4.5 (medium).

Detailed comparison

Metric GPT-5.2 Chat GPT-5.2 Chat none Release: 2025-12-11 Grok 4.5 Grok 4.5 medium Release: 2026-07-08
Score 7.9 8.5
Rank #59 #37
Reliability 10.0 10.0
Consistency 8.6 8.9
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 69.7% 83.3%
Flaky tests 4 3
Total Runs 66 66
Cost per result 4.564 12.007
Total Cost $0.594 $2.042
Input Price $1.750 / 1M $2.000 / 1M
Output Price $14.000 / 1M $6.000 / 1M
Total Input Tokens 101,104 122,155
Output Tokens 29,742 5,514
Reasoning Tokens 0 293,946
Response Time (avg) 7.73s 68.59s
Response Time (max) 38.52s 436.38s
Response Time (total) 162.40s 1508.91s
Parameters ~400B total (~17B 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.

#59 GPT-5.2 Chat

none
Cost
$0.010
Time
15.3s
Tokens
797 tok

#37 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-5.2 Chat 8.8 7.8 88.9% 1 9.82s 7,305 6,731 0
Grok 4.5 7.6 7.2 77.8% 1 155.69s 9,579 390 104,634

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