What is the difference between GPT OSS 20B and Grok 3 Beta?

GPT OSS 20B is developed by OpenAI while Grok 3 Beta is developed by xAI. GPT OSS 20B has a 131K token context window vs Grok 3 Beta's 131K. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, GPT OSS 20B or Grok 3 Beta?

It depends on your use case. GPT OSS 20B and Grok 3 Beta 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 GPT OSS 20B cost compared to Grok 3 Beta?

GPT OSS 20B costs $0.02/M input tokens and Grok 3 Beta costs $2/M input tokens. GPT OSS 20B is $1.98/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 OSS 20B and Grok 3 Beta on Rival?

This page shows a side-by-side comparison of GPT OSS 20B and Grok 3 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.

Updated Aug 2025

GPT OSS 20BvsGrok 3 Beta

GPT OSS 20B is cheaper than Grok 3 Beta at $0.02/M vs $2/M input tokens.

GPT OSS 20B and Grok 3 Beta compared across 54 shared prompts
Spec	GPT OSS 20B	Grok 3 Beta
Input price	$0.02/M tokens	$2/M tokens
Output price	$0.1/M tokens	$4/M tokens
Context window	131K tokens	131K tokens
Parameters	21B (3.6B active)	Not disclosed
Weights	Open	—
Free API (OpenRouter)	No	No
Released	Aug 2025	Apr 2025