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Nemotron 3 Ultra 550b A55b vs xAI: Grok 4.3

Last updated at: 2026-06-04

Metric Nemotron 3 Ultra 550b A55b Nemotron 3 Ultra 550b A55b medium Release: 2026-06-04 Free Available Grok 4.3 Grok 4.3 medium Release: 2026-05-01
Score 7.5 7.6
Rank #41 #38
Reliability 9.7 10.0
Consistency 8.8 8.5
Tests Correct
Attempt pass rate 69.8% 71.4%
Flaky tests 3 4
Total Runs 63 63
Cost per result 0.000 4.724
Total Cost $0.000 $0.614
Input Price $0.000 / 1M $1.250 / 1M
Output Price $0.000 / 1M $2.500 / 1M
Total Input Tokens 46,813 44,472
Output Tokens 18,002 1,981
Reasoning Tokens 53,091 221,382
Response Time (avg) 15.05s 47.51s
Response Time (max) 43.93s 216.69s
Response Time (total) 316.09s 997.68s

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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 4.3 10.0 10.0 100.0% 0 8.83s 2,010 88 8,207
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 4.3 5.9 7.7 44.4% 1 41.23s 8,340 1,028 31,226
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 4.3 10.0 10.0 100.0% 0 63.99s 12,909 234 15,301
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 4.3 10.0 10.0 100.0% 0 18.97s 7,761 180 9,546
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 4.3 5.3 7.2 44.4% 1 181.74s 1,764 14 111,300
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 4.3 5.4 2.5 66.7% 1 24.70s 825 70 5,020
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 4.3 9.8 10.0 100.0% 0 18.58s 1,362 57 8,713
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 4.3 5.9 7.2 55.6% 1 22.52s 1,689 128 14,468
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 4.3 10.0 10.0 100.0% 0 17.66s 7,263 168 4,615
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 4.3 3.0 10.0 0.0% 0 44.47s 549 14 12,986

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