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GPT 5.3 Chat vs Grok Build 0.1 (medium)

The average score is effectively tied at 7.5 vs 7.5. GPT 5.3 Chat has the lower benchmark cost at $0.533 vs $1.130. GPT 5.3 Chat is faster at 6.56s vs 54.50s, with pass rates of 65.2% vs 60.6%.

Last updated at: 2026-08-15

Rank
#85
Total Output Tokens
28,179
Response Time (avg)
6.56s
Total Cost
$0.533
Rank
#89
Total Output Tokens
511,406
Response Time (avg)
54.50s
Total Cost
$1.130
Recommended model GPT 5.3 Chat

It has the best score here (7.5), while costing about 2.1x less than Grok Build 0.1 (medium).

Detailed comparison

Metric GPT 5.3 Chat GPT 5.3 Chat none Release: 2026-03-03 Grok Build 0.1 Grok Build 0.1 medium Release: 2026-05-21
Score 7.5 7.5
Rank #85 #89
Reliability 10.0 10.0
Consistency 8.6 9.6
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 65.2% 60.6%
Flaky tests 4 1
Total Runs 66 66
Cost per result 4.097 8.691
Total Cost $0.533 $1.130
Input Price $1.750 / 1M $1.000 / 1M
Output Price $14.000 / 1M $2.000 / 1M
Total Input Tokens 78,846 106,946
Output Tokens 28,179 7,993
Reasoning Tokens 0 503,413
Response Time (avg) 6.56s 54.50s
Response Time (max) 18.33s 252.69s
Response Time (total) 137.77s 1199.07s
Parameters ~400B total (~17B active) ~300B total (~30B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#85 GPT 5.3 Chat

none
Cost
$0.008
Time
8.1s
Tokens
634 tok

#89 SpaceXAI: Grok Build 0.1

medium
Cost
$0.028
Time
81.3s
Tokens
14,009 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 5.3 Chat 5.6 4.7 55.6% 2 10.52s 7,302 6,632 0
Grok Build 0.1 5.7 9.7 33.3% 0 108.46s 8,304 1,138 161,452

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