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Nemotron 3.5 Lightning (low) vs Grok 4.20

Nemotron 3.5 Lightning (low) leads on average score with 4.6 vs 3.4. Grok 4.20 has the lower benchmark cost at $0.057 vs $0.123. Grok 4.20 is faster at 1.11s vs 83.19s, with pass rates of 40.6% vs 26.1%.

Last updated at: 2026-10-01

Compared models

Rank
#325
Total Output Tokens
670,615
Response Time (avg)
83.19s
Total Cost
$0.123
Rank
#362
Total Output Tokens
1,923
Response Time (avg)
1.11s
Total Cost
$0.057
Recommended model Nemotron 3.5 Lightning (low)

It has the strongest score in this comparison (4.6) and the best overall balance of cost and response time across all 2 models.

Detailed comparison

Metric Nemotron 3.5 Lightning Nemotron 3.5 Lightning low Release: 2026-08-11 Free Available Grok 4.20 Grok 4.20 none Release: 2026-03-31
Score 4.6 3.4
Rank #325 #362
Reliability 9.5 N/A
Consistency 6.8 7.8
Attempts 69/69 54/69
Tests Correct
Attempt pass rate 40.6% 26.1%
Flaky tests 9 0
Total Runs 69 54
Cost per result 0.000 1.570
Total Cost $0.123 $0.057
Input Price $0.060 / 1M $1.250 / 1M
Output Price $0.170 / 1M $2.500 / 1M
Cache Read Price $0.030 / 1M $0.200 / 1M
Cache Write Price N/A N/A
Total Input Tokens 207,883 41,313
Output Tokens 144,718 1,923
Reasoning Tokens 525,897 0
Response Time (avg) 83.19s 1.11s
Response Time (max) 597.61s 6.04s
Response Time (total) 1913.41s 19.96s
Parameters 30B total (3B active) ~1T total (~100B active)
Availability Weights available Closed

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Model generation showcase

Hamster playing table tennis

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

#325 Nemotron 3.5 Lightning

low
Cost
$0.000
Time
32.2s
Tokens
6,089 tok

#362 xAI: Grok 4.20

none
Cost
$0.004
Time
6.5s
Tokens
1,367 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 3.5 Lightning 4.0 7.8 11.1% 1 224.42s 7,522 72,614 262,558
Grok 4.20 1.1 3.1 0.0% 0 1.22s 1,074 312 0

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