What is the difference between Grok 4.20 Multi-Agent Beta and Pony Alpha?

Grok 4.20 Multi-Agent Beta is developed by xAI while Pony Alpha is developed by OpenRouter. Grok 4.20 Multi-Agent Beta has a 2.0M token context window vs Pony Alpha's 200K. You can compare their actual outputs across 47 challenges on Rival to see how they differ in practice.

Which is better, Grok 4.20 Multi-Agent Beta or Pony Alpha?

It depends on your use case. Grok 4.20 Multi-Agent Beta and Pony Alpha each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 47 challenges so you can judge which fits your needs best.

How much does Grok 4.20 Multi-Agent Beta cost compared to Pony Alpha?

Grok 4.20 Multi-Agent Beta costs $2/M input tokens and Pony Alpha costs $0/M input tokens. Pony Alpha is $2.00/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 4.20 Multi-Agent Beta and Pony Alpha on Rival?

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

Updated Mar 2026

Grok 4.20 Multi-Agent BetavsPony Alpha

Pony Alpha is cheaper than Grok 4.20 Multi-Agent Beta at $0/M vs $2/M input tokens.

Grok 4.20 Multi-Agent Beta and Pony Alpha compared across 47 shared prompts
Spec	Grok 4.20 Multi-Agent Beta	Pony Alpha
Input price	$2/M tokens	Free
Output price	$6/M tokens	Free
Context window	2.0M tokens	200K tokens
Weights	Closed	—
Free API (OpenRouter)	No	No
Released	Mar 2026	Feb 2026

Our Verdict

Grok 4.20 Multi-Agent Beta

Pony AlphaRunner-up

Not enough votes to call it. On the specs, Grok 4.20 Multi-Agent Beta has the edge: bigger model tier, newer, bigger context window, major provider backing.

Slight edge

API pricing