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OpenAI: GPT-5.6 Sol vs xAI: Grok 4.5

GPT-5.6 Sol (low) leads on average score with 9.5 vs 8.9. GPT-5.6 Sol (low) has the lower benchmark cost at $0.971 vs $1.707. GPT-5.6 Sol (low) is faster at 8.79s vs 76.50s, with pass rates of 86.4% vs 83.3%.

Recommended modelGPT-5.6 Sol (low)It has the best score here (9.5), while costing about 1.8x less than Grok 4.5 (high).

Last updated at: 2026-07-17

Metric GPT-5.6 Sol GPT-5.6 Sol low Release: 2026-07-09 Grok 4.5 Grok 4.5 high Release: 2026-07-08
Score 9.5 8.9
Rank #3 #12
Reliability 10.0 10.0
Consistency 9.2 9.2
Tests Correct
Attempt pass rate 86.4% 83.3%
Flaky tests 2 2
Total Runs 66 66
Cost per result 5.391 10.041
Total Cost $0.971 $1.707
Input Price $5.000 / 1M $2.000 / 1M
Output Price $30.000 / 1M $6.000 / 1M
Total Input Tokens 78,571 151,562
Output Tokens 4,476 5,655
Reasoning Tokens 14,770 247,540
Response Time (avg) 8.79s 76.50s
Response Time (max) 53.91s 676.83s
Response Time (total) 193.33s 1683.07s

Hamster playing table tennis

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

#3 GPT-5.6 Sol

low
Cost
$0.062
Time
26.7s
Tokens
2,150 tok

#12 xAI: Grok 4.5

high
Cost
$0.015
Time
29.7s
Tokens
2,737 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-5.6 Sol 10.0 10.0 100.0% 0 11.25s 7,302 412 3,482
Grok 4.5 10.0 10.0 100.0% 0 155.16s 9,579 357 100,752

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