What is the difference between Grok 4 Fast (free) and Ox Alpha?

Grok 4 Fast (free) is developed by xAI while Ox Alpha is developed by OpenRouter. Grok 4 Fast (free) has a 2.0M token context window vs Ox Alpha's 1.0M. You can compare their actual outputs across 34 challenges on Rival to see how they differ in practice.

Which is better, Grok 4 Fast (free) or Ox Alpha?

It depends on your use case. Grok 4 Fast (free) and Ox Alpha each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 34 challenges so you can judge which fits your needs best.

How much does Grok 4 Fast (free) cost compared to Ox Alpha?

Grok 4 Fast (free) costs $0/M input tokens and Ox Alpha costs $0/M input tokens. Ox Alpha is $0.00/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 4 Fast (free) and Ox Alpha on Rival?

This page shows a side-by-side comparison of Grok 4 Fast (free) and Ox Alpha 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 4 Fast (free) and Ox Alpha?

Grok 4 Fast (free) is developed by xAI while Ox Alpha is developed by OpenRouter. Grok 4 Fast (free) has a 2.0M token context window vs Ox Alpha's 1.0M. You can compare their actual outputs across 34 challenges on Rival to see how they differ in practice.

Which is better, Grok 4 Fast (free) or Ox Alpha?

It depends on your use case. Grok 4 Fast (free) and Ox Alpha each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 34 challenges so you can judge which fits your needs best.

How much does Grok 4 Fast (free) cost compared to Ox Alpha?

Grok 4 Fast (free) costs $0/M input tokens and Ox Alpha costs $0/M input tokens. Ox Alpha is $0.00/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 4 Fast (free) and Ox Alpha on Rival?

This page shows a side-by-side comparison of Grok 4 Fast (free) and Ox Alpha 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 4 Fast (free) vs Ox Alpha: Which Is Better?

Updated Aug 2026

Our Verdict

Grok 4 Fast (free)

Ox Alpha

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call

What do Grok 4 Fast (free) and Ox Alpha say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Grok 4 Fast (free)

Input

$0.000

Output

$0.000

Ox Alpha

Input

$0.000

Output

$0.000

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Grok 4 Fast (free) vs MiniMax M3New provider

Grok 4 Fast (free) vs GPT-5New provider

Grok 4 Fast (free) vs Gemini 3.6 FlashNew provider

Updated Aug 2026

Our Verdict

Grok 4 Fast (free)

Ox Alpha

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call

What do Grok 4 Fast (free) and Ox Alpha say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Grok 4 Fast (free)

Input

$0.000

Output

$0.000

Ox Alpha

Input

$0.000

Output

$0.000

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Grok 4 Fast (free) vs MiniMax M3New provider

Grok 4 Fast (free) vs GPT-5New provider

Grok 4 Fast (free) vs Gemini 3.6 FlashNew provider