What is the difference between GPT-5.4 Pro and Grok 4.20 Multi-Agent Beta?

GPT-5.4 Pro is developed by OpenAI while Grok 4.20 Multi-Agent Beta is developed by xAI. GPT-5.4 Pro has a 1.1M token context window vs Grok 4.20 Multi-Agent Beta's 2.0M. You can compare their actual outputs across 18 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.4 Pro or Grok 4.20 Multi-Agent Beta?

It depends on your use case. GPT-5.4 Pro and Grok 4.20 Multi-Agent Beta each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 18 challenges so you can judge which fits your needs best.

How much does GPT-5.4 Pro cost compared to Grok 4.20 Multi-Agent Beta?

GPT-5.4 Pro costs $30/M input tokens and Grok 4.20 Multi-Agent Beta costs $2/M input tokens. Grok 4.20 Multi-Agent Beta is $28.00/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 GPT-5.4 Pro and Grok 4.20 Multi-Agent Beta on Rival?

This page shows a side-by-side comparison of GPT-5.4 Pro and Grok 4.20 Multi-Agent Beta 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 GPT-5.4 Pro and Grok 4.20 Multi-Agent Beta?

GPT-5.4 Pro is developed by OpenAI while Grok 4.20 Multi-Agent Beta is developed by xAI. GPT-5.4 Pro has a 1.1M token context window vs Grok 4.20 Multi-Agent Beta's 2.0M. You can compare their actual outputs across 18 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.4 Pro or Grok 4.20 Multi-Agent Beta?

It depends on your use case. GPT-5.4 Pro and Grok 4.20 Multi-Agent Beta each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 18 challenges so you can judge which fits your needs best.

How much does GPT-5.4 Pro cost compared to Grok 4.20 Multi-Agent Beta?

GPT-5.4 Pro costs $30/M input tokens and Grok 4.20 Multi-Agent Beta costs $2/M input tokens. Grok 4.20 Multi-Agent Beta is $28.00/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 GPT-5.4 Pro and Grok 4.20 Multi-Agent Beta on Rival?

This page shows a side-by-side comparison of GPT-5.4 Pro and Grok 4.20 Multi-Agent Beta 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.

GPT-5.4 Pro vs Grok 4.20 Multi-Agent Beta: Which Is Better?

Updated Mar 2026

Our Verdict

GPT-5.4 Pro

Grok 4.20 Multi-Agent Beta

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

Grok 4.20 Multi-Agent Beta is 30x cheaper per token — worth considering if cost matters.

Too close to call

What do GPT-5.4 Pro and Grok 4.20 Multi-Agent Beta say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

GPT-5.4 Pro

Input

$30.00

Output

$180.00

Grok 4.20 Multi-Agent Beta

Input

$2.00

15× cheaper

Output

$6.00

30× cheaper

Grok 4.20 Multi-Agent Beta is cheaper on both — 15× input, 30× output

Writing DNA

Style Comparison

Similarity

40%

GPT-5.4 Pro uses 9.5x more headings

GPT-5.4 Pro

Grok 4.20 Multi-Agent Beta

50%Vocabulary59%

35wSentence Length16w

0.70Hedging0.41

7.5Bold2.7

8.3Lists2.4

0.00Emoji0.00

2.52Headings0.26

0.01Transitions0.02

Based on 12 + 23 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

GPT-5.4 Pro vs MiniMax M3New provider

GPT-5.4 Pro vs Ox AlphaNew provider

GPT-5.4 Pro vs Claude Opus 4.1New provider

Updated Mar 2026

Our Verdict

GPT-5.4 Pro

Grok 4.20 Multi-Agent Beta

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

Grok 4.20 Multi-Agent Beta is 30x cheaper per token — worth considering if cost matters.

Too close to call

What do GPT-5.4 Pro and Grok 4.20 Multi-Agent Beta say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

GPT-5.4 Pro

Input

$30.00

Output

$180.00

Grok 4.20 Multi-Agent Beta

Input

$2.00

15× cheaper

Output

$6.00

30× cheaper

Grok 4.20 Multi-Agent Beta is cheaper on both — 15× input, 30× output

Writing DNA

Style Comparison

Similarity

40%

GPT-5.4 Pro uses 9.5x more headings

GPT-5.4 Pro

Grok 4.20 Multi-Agent Beta

50%Vocabulary59%

35wSentence Length16w

0.70Hedging0.41

7.5Bold2.7

8.3Lists2.4

0.00Emoji0.00

2.52Headings0.26

0.01Transitions0.02

Based on 12 + 23 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

GPT-5.4 Pro vs MiniMax M3New provider

GPT-5.4 Pro vs Ox AlphaNew provider

GPT-5.4 Pro vs Claude Opus 4.1New provider