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MoonshotAI: Kimi K2.5 vs Nemotron 3 Ultra 550b A55b

Summary

Kimi K2.5 vs Nemotron 3 Ultra 550b A55b benchmark comparison: Nemotron 3 Ultra 550b A55b leads on average score with 8.1 vs 7.5. Nemotron 3 Ultra 550b A55b has the lower benchmark cost at $0.158 vs $0.348. Nemotron 3 Ultra 550b A55b is faster at 15.05s vs 98.43s, with pass rates of 68.3% vs 69.8%.

Recommended model: Nemotron 3 Ultra 550b A55b - It has the best score here (8.1), while costing about 2.2x less than Kimi K2.5.

Last updated at: 2026-07-02

Metric Kimi K2.5 Kimi K2.5 medium Release: 2026-01-27 Nemotron 3 Ultra 550b A55b Nemotron 3 Ultra 550b A55b medium Release: 2026-06-04 Free Available
Score 7.5 8.1
Rank #45 #26
Reliability 10.0 9.7
Consistency 6.9 8.8
Tests Correct
Attempt pass rate 68.3% 69.8%
Flaky tests 8 3
Total Runs 63 63
Cost per result 3.704 0.000
Total Cost $0.348 $0.158
Input Price $0.375 / 1M $0.500 / 1M
Output Price $2.025 / 1M $2.200 / 1M
Total Input Tokens 34,312 46,813
Output Tokens 48,379 18,002
Reasoning Tokens 157,747 53,091
Response Time (avg) 98.43s 15.05s
Response Time (max) 281.00s 43.93s
Response Time (total) 1378.03s 316.09s

Generation showcase

Hamster playing table tennis

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

#45 MoonshotAI: Kimi K2.5

medium
Cost
$0.030
Time
58.6s
Tokens
8,683 tok

#26 Nemotron 3 Ultra 550b A55b

medium
Invalid SVG
Cost
$0.000
Time
300.0s
Tokens
0 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
Kimi K2.5 7.3 5.8 83.3% 2 51.38s 634 2,789 8,880
Nemotron 3 Ultra 550b A55b 10.0 10.0 100.0% 0 8.62s 780 835 1,485
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 6.1 4.6 66.7% 2 217.49s 6,935 5,705 74,693
Nemotron 3 Ultra 550b A55b 8.4 7.4 88.9% 1 26.53s 7,686 2,854 17,725
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 10.0 10.0 100.0% 0 71.37s 11,280 703 3,713
Nemotron 3 Ultra 550b A55b 9.8 10.0 100.0% 0 43.93s 17,574 1,040 3,590
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 10.0 10.0 100.0% 0 49.78s 7,020 563 7,940
Nemotron 3 Ultra 550b A55b 10.0 10.0 100.0% 0 5.68s 7,989 473 1,285
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 3.5 4.4 33.3% 2 137.29s 485 20,753 30,564
Nemotron 3 Ultra 550b A55b 3.5 4.4 33.3% 2 24.90s 858 11,169 16,249
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 6.5 3.4 66.7% 1 69.73s 480 3,815 4,262
Nemotron 3 Ultra 550b A55b 3.7 9.5 0.0% 0 2.52s 360 70 235
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 10.0 10.0 100.0% 0 92.47s 675 5,371 6,547
Nemotron 3 Ultra 550b A55b 9.8 10.0 100.0% 0 6.35s 765 182 1,243
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 5.3 7.3 44.4% 1 43.23s 659 8,426 12,692
Nemotron 3 Ultra 550b A55b 5.5 9.9 33.3% 0 3.54s 792 771 2,055
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 10.0 10.0 100.0% 0 31.74s 5,933 242 812
Nemotron 3 Ultra 550b A55b 10.0 10.0 100.0% 0 7.72s 9,781 304 984
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 3.0 10.0 0.0% 0 83.95s 211 12 7,644
Nemotron 3 Ultra 550b A55b 3.0 10.0 0.0% 0 38.47s 228 304 8,240

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