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

The average score is effectively tied at 9.3 vs 9.3. GPT-5.5 (low) has the lower benchmark cost at $1.257 vs $1.908. GPT-5.5 (low) is faster at 10.15s vs 84.15s, with pass rates of 86.4% vs 86.4%.

Last updated at: 2026-09-04

Rank
#16
Total Output Tokens
28,540
Response Time (avg)
10.15s
Total Cost
$1.257
Rank
#17
Total Output Tokens
282,217
Response Time (avg)
84.15s
Total Cost
$1.908
Recommended model GPT-5.5 (low)

It has the best score here (9.3), while costing about 1.5x less 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 9.3
Rank #16 #17
Reliability 10.0 10.0
Consistency 10.0 10.0
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 86.4% 86.4%
Flaky tests 0 0
Total Runs 66 66
Cost per result 6.614 10.042
Total Cost $1.257 $1.908
Input Price $5.000 / 1M $2.000 / 1M
Output Price $30.000 / 1M $6.000 / 1M
Total Input Tokens 80,067 107,275
Output Tokens 5,378 5,094
Reasoning Tokens 23,162 277,123
Response Time (avg) 10.15s 84.15s
Response Time (max) 56.19s 618.49s
Response Time (total) 223.24s 1851.26s
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.

#16 GPT-5.5

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

#17 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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