What is the difference between Muse Spark 1.3 and OpenAI o4 Mini High?

Muse Spark 1.3 is developed by Meta AI while OpenAI o4 Mini High is developed by OpenAI. Muse Spark 1.3 has a 1.0M token context window vs OpenAI o4 Mini High's 200K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Muse Spark 1.3 or OpenAI o4 Mini High?

It depends on your use case. Muse Spark 1.3 and OpenAI o4 Mini High each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does Muse Spark 1.3 cost compared to OpenAI o4 Mini High?

Muse Spark 1.3 costs $1.25/M input tokens and OpenAI o4 Mini High costs $1.1/M input tokens. OpenAI o4 Mini High is $0.15/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 Muse Spark 1.3 and OpenAI o4 Mini High on Rival?

This page shows a side-by-side comparison of Muse Spark 1.3 and OpenAI o4 Mini High 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 Sep 2026

Muse Spark 1.3vsOpenAI o4 Mini High

OpenAI o4 Mini High is cheaper than Muse Spark 1.3 at $1.1/M vs $1.25/M input tokens.

Muse Spark 1.3 and OpenAI o4 Mini High compared across 53 shared prompts
Spec	Muse Spark 1.3	OpenAI o4 Mini High
Input price	$1.25/M tokens	$1.1/M tokens
Output price	$4.25/M tokens	$4.4/M tokens
Context window	1.0M tokens	200K tokens
Weights	Closed	Closed
Free API (OpenRouter)	No	No
Released	Sep 2026	Apr 2025