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NVIDIA: Nemotron 3 Ultra vs xAI: Grok 4.5

Grok 4.5 (high) leads on average score with 8.9 vs 7.5. Nemotron 3 Ultra (medium) has the lower benchmark cost at $0.774 vs $1.707. Nemotron 3 Ultra (medium) is faster at 32.21s vs 76.50s, with pass rates of 68.2% vs 83.3%.

Recommended modelGrok 4.5 (high)It has the strongest score in this comparison (8.9) and the best overall balance of cost and response time across all 2 models.

Last updated at: 2026-07-17

Metric Nemotron 3 Ultra Nemotron 3 Ultra medium Release: 2026-06-04 Free Available Grok 4.5 Grok 4.5 high Release: 2026-07-08
Score 7.5 8.9
Rank #49 #12
Reliability 9.8 10.0
Consistency 8.5 9.2
Tests Correct
Attempt pass rate 68.2% 83.3%
Flaky tests 4 2
Total Runs 66 66
Cost per result 0.000 10.041
Total Cost $0.774 $1.707
Input Price $0.600 / 1M $2.000 / 1M
Output Price $3.600 / 1M $6.000 / 1M
Total Input Tokens 233,488 151,562
Output Tokens 57,916 5,655
Reasoning Tokens 128,062 247,540
Response Time (avg) 32.21s 76.50s
Response Time (max) 392.56s 676.83s
Response Time (total) 708.65s 1683.07s

Hamster playing table tennis

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

#49 Nemotron 3 Ultra

medium
Invalid SVG
Cost
$0.000
Time
300.0s
Tokens
0 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
Nemotron 3 Ultra 8.4 7.4 88.9% 1 26.53s 7,686 2,854 17,725
Grok 4.5 10.0 10.0 100.0% 0 155.16s 9,579 357 100,752

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