What is the difference between Grok Code Fast 1 and NVIDIA: Nemotron 3 Ultra?

Grok Code Fast 1 is developed by xAI while NVIDIA: Nemotron 3 Ultra is developed by NVIDIA. Grok Code Fast 1 has a 256K token context window vs NVIDIA: Nemotron 3 Ultra's 1.0M. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, Grok Code Fast 1 or NVIDIA: Nemotron 3 Ultra?

It depends on your use case. Grok Code Fast 1 and NVIDIA: Nemotron 3 Ultra each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 54 challenges so you can judge which fits your needs best.

How much does Grok Code Fast 1 cost compared to NVIDIA: Nemotron 3 Ultra?

Grok Code Fast 1 costs $0.2/M input tokens and NVIDIA: Nemotron 3 Ultra costs $0/M input tokens. NVIDIA: Nemotron 3 Ultra is $0.20/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Grok Code Fast 1 and NVIDIA: Nemotron 3 Ultra on Rival?

This page shows a side-by-side comparison of Grok Code Fast 1 and NVIDIA: Nemotron 3 Ultra across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

What is the difference between Grok Code Fast 1 and NVIDIA: Nemotron 3 Ultra?

Grok Code Fast 1 is developed by xAI while NVIDIA: Nemotron 3 Ultra is developed by NVIDIA. Grok Code Fast 1 has a 256K token context window vs NVIDIA: Nemotron 3 Ultra's 1.0M. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, Grok Code Fast 1 or NVIDIA: Nemotron 3 Ultra?

It depends on your use case. Grok Code Fast 1 and NVIDIA: Nemotron 3 Ultra each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 54 challenges so you can judge which fits your needs best.

How much does Grok Code Fast 1 cost compared to NVIDIA: Nemotron 3 Ultra?

Grok Code Fast 1 costs $0.2/M input tokens and NVIDIA: Nemotron 3 Ultra costs $0/M input tokens. NVIDIA: Nemotron 3 Ultra is $0.20/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Grok Code Fast 1 and NVIDIA: Nemotron 3 Ultra on Rival?

This page shows a side-by-side comparison of Grok Code Fast 1 and NVIDIA: Nemotron 3 Ultra across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Grok Code Fast 1 vs NVIDIA: Nemotron 3 Ultra: Which Is Better?

Updated Jun 2026

Our Verdict

NVIDIA: Nemotron 3 Ultra

Grok Code Fast 1Runner-up

No community votes yet. On paper, NVIDIA: Nemotron 3 Ultra has the edge — bigger model tier, newer, bigger context window.

Too close to call

API pricing

Cost per 1M tokens

Grok Code Fast 1

Input

$0.20

Output

$1.50

NVIDIA: Nemotron 3 Ultra

Input

$0.000

Output

$0.000

Writing DNA

Style Comparison

Similarity

35%

Grok Code Fast 1 uses 3.7x more hedging

Grok Code Fast 1

NVIDIA: Nemotron 3 Ultra

60%Vocabulary59%

17wSentence Length16w

0.97Hedging0.26

2.8Bold7.7

2.5Lists2.7

0.06Emoji0.13

0.89Headings0.75

0.11Transitions0.04

Based on 23 + 26 text responses

Research

What we learned reading every model

Grok Code Fast 1 and NVIDIA: Nemotron 3 Ultra have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

Grok Code Fast 1 vs MiniMax M3New provider

Grok Code Fast 1 vs Claude Opus 4.1New provider

Grok Code Fast 1 vs GPT-5New provider

Updated Jun 2026

Our Verdict

NVIDIA: Nemotron 3 Ultra

Grok Code Fast 1Runner-up

No community votes yet. On paper, NVIDIA: Nemotron 3 Ultra has the edge — bigger model tier, newer, bigger context window.

Too close to call

API pricing

Cost per 1M tokens

Grok Code Fast 1

Input

$0.20

Output

$1.50

NVIDIA: Nemotron 3 Ultra

Input

$0.000

Output

$0.000

Writing DNA

Style Comparison

Similarity

35%

Grok Code Fast 1 uses 3.7x more hedging

Grok Code Fast 1

NVIDIA: Nemotron 3 Ultra

60%Vocabulary59%

17wSentence Length16w

0.97Hedging0.26

2.8Bold7.7

2.5Lists2.7

0.06Emoji0.13

0.89Headings0.75

0.11Transitions0.04

Based on 23 + 26 text responses

Research

What we learned reading every model

Grok Code Fast 1 and NVIDIA: Nemotron 3 Ultra have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

Grok Code Fast 1 vs MiniMax M3New provider

Grok Code Fast 1 vs Claude Opus 4.1New provider

Grok Code Fast 1 vs GPT-5New provider