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Nemotron 3 Ultra 550b A55b vs xAI: Grok 4.5

Summary

Nemotron 3 Ultra 550b A55b (medium) vs Grok 4.5 (low) benchmark comparison: Nemotron 3 Ultra 550b A55b (medium) leads on average score with 8.1 vs 7.8. Nemotron 3 Ultra 550b A55b (medium) has the lower benchmark cost at $0.158 vs $0.760. Nemotron 3 Ultra 550b A55b (medium) is faster at 15.05s vs 15.48s, with pass rates of 69.8% vs 74.6%.

Recommended model: Nemotron 3 Ultra 550b A55b (medium) - It has the best score here (8.1), while costing about 4.8x less than Grok 4.5 (low).

Last updated at: 2026-07-08

Metric Nemotron 3 Ultra 550b A55b Nemotron 3 Ultra 550b A55b medium Release: 2026-06-04 Free Available Grok 4.5 Grok 4.5 low Release: 2026-07-08
Score 8.1 7.8
Rank #27 #34
Reliability 9.7 10.0
Consistency 8.8 9.7
Tests Correct
Attempt pass rate 69.8% 74.6%
Flaky tests 3 1
Total Runs 63 63
Cost per result 0.000 5.061
Total Cost $0.158 $0.760
Input Price $0.500 / 1M $2.000 / 1M
Output Price $2.200 / 1M $6.000 / 1M
Total Input Tokens 46,813 58,652
Output Tokens 18,002 1,735
Reasoning Tokens 53,091 105,233
Response Time (avg) 15.05s 15.48s
Response Time (max) 43.93s 205.28s
Response Time (total) 316.09s 324.98s

Generation showcase

Hamster playing table tennis

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

#27 Nemotron 3 Ultra 550b A55b

medium
Invalid SVG
Cost
$0.000
Time
300.0s
Tokens
0 tok

#34 xAI: Grok 4.5

low
Cost
$0.011
Time
12.4s
Tokens
2,018 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

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Nemotron 3 Ultra 550b A55b 10.0 10.0 100.0% 0 8.62s 780 835 1,485
Grok 4.5 10.0 10.0 100.0% 0 2.75s 2,991 261 3,000
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Nemotron 3 Ultra 550b A55b 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 13.72s 9,579 303 15,641
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Nemotron 3 Ultra 550b A55b 9.8 10.0 100.0% 0 43.93s 17,574 1,040 3,590
Grok 4.5 3.0 10.0 0.0% 0 8.16s 15,084 261 2,370
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Nemotron 3 Ultra 550b A55b 10.0 10.0 100.0% 0 5.68s 7,989 473 1,285
Grok 4.5 10.0 10.0 100.0% 0 3.44s 8,937 225 2,549
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Nemotron 3 Ultra 550b A55b 3.5 4.4 33.3% 2 24.90s 858 11,169 16,249
Grok 4.5 3.0 10.0 0.0% 0 72.64s 2,514 14 70,275
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Nemotron 3 Ultra 550b A55b 3.7 9.5 0.0% 0 2.52s 360 70 235
Grok 4.5 6.1 3.1 66.7% 1 4.88s 1,077 98 1,253
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Nemotron 3 Ultra 550b A55b 9.8 10.0 100.0% 0 6.35s 765 182 1,243
Grok 4.5 9.8 10.0 100.0% 0 2.80s 1,857 57 1,878
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Nemotron 3 Ultra 550b A55b 5.5 9.9 33.3% 0 3.54s 792 771 2,055
Grok 4.5 10.0 10.0 100.0% 0 3.20s 2,430 217 2,590
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Nemotron 3 Ultra 550b A55b 10.0 10.0 100.0% 0 7.72s 9,781 304 984
Grok 4.5 10.0 10.0 100.0% 0 5.83s 13,394 284 871
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Nemotron 3 Ultra 550b A55b 3.0 10.0 0.0% 0 38.47s 228 304 8,240
Grok 4.5 3.0 10.0 0.0% 0 13.98s 789 15 4,806

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