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GPT 5.3 Chat vs Grok Build 0.1 (medium)

The average score is effectively tied at 6.7 vs 6.7. GPT 5.3 Chat has the lower benchmark cost at $0.533 vs $1.419. GPT 5.3 Chat is faster at 6.31s vs 55.13s, with pass rates of 62.3% vs 58.0%.

Last updated at: 2026-10-03

Compared models

Rank
#184
Total Output Tokens
28,179
Response Time (avg)
6.31s
Total Cost
$0.533
Rank
#178
Total Output Tokens
529,806
Response Time (avg)
55.13s
Total Cost
$1.419
Recommended model GPT 5.3 Chat

It has the best score here (6.7), while costing about 2.7x 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 6.7 6.7
Rank #184 #178
Reliability 10.0 10.0
Consistency 8.6 9.6
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 62.3% 58.0%
Flaky tests 4 1
Total Runs 69 69
Cost per result 4.097 10.910
Total Cost $0.533 $1.419
Input Price $1.750 / 1M $1.000 / 1M
Output Price $14.000 / 1M $2.000 / 1M
Cache Read Price N/A $0.200 / 1M
Cache Write Price N/A N/A
Total Input Tokens 78,846 358,616
Output Tokens 28,179 9,651
Reasoning Tokens 0 520,155
Response Time (avg) 6.31s 55.13s
Response Time (max) 18.33s 252.69s
Response Time (total) 138.73s 1268.10s
Parameters ~400B total (~17B active) ~300B total (~30B active)
Availability Closed Closed

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Model generation showcase

Hamster playing table tennis

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

#184 GPT 5.3 Chat

none
Cost
$0.008
Time
8.1s
Tokens
634 tok

#178 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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