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GPT-5.5 (low) vs Grok 4.6 (high)

GPT-5.5 (low) leads on average score with 9.3 vs 9.2. GPT-5.5 (low) has the lower benchmark cost at $1.253 vs $1.809. GPT-5.5 (low) is faster at 10.13s vs 79.38s, with pass rates of 86.4% vs 84.9%.

Last updated at: 2026-08-12

Rank
#8
Total Output Tokens
28,418
Response Time (avg)
10.13s
Total Cost
$1.253
Rank
#11
Total Output Tokens
265,604
Response Time (avg)
79.38s
Total Cost
$1.809
Recommended model GPT-5.5 (low)

It has the best score here (9.3), while responding about 7.8x faster than Grok 4.6 (high).

Detailed comparison

Metric GPT-5.5 GPT-5.5 low Release: 2026-04-24 Grok 4.6 Grok 4.6 high Release: 2026-08-12
Score 9.3 9.2
Rank #8 #11
Reliability 10.0 10.0
Consistency 10.0 9.6
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 86.4% 84.9%
Flaky tests 0 1
Total Runs 66 66
Cost per result 6.594 10.046
Total Cost $1.253 $1.809
Input Price $5.000 / 1M $2.000 / 1M
Output Price $30.000 / 1M $6.000 / 1M
Total Input Tokens 80,058 107,266
Output Tokens 5,378 5,094
Reasoning Tokens 23,040 260,510
Response Time (avg) 10.13s 79.38s
Response Time (max) 56.19s 618.49s
Response Time (total) 222.82s 1746.29s
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.

#8 GPT-5.5

low
Cost
$0.068
Time
37.0s
Tokens
2,339 tok

#11 SpaceXAI: Grok 4.6

high
Cost
$0.107
Time
265.1s
Tokens
18,001 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-5.5 10.0 10.0 100.0% 0 15.04s 7,302 423 6,402
Grok 4.6 10.0 10.0 100.0% 0 102.20s 9,579 379 51,829

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