What is the difference between GPT-4o (Omni) and Solar Pro 3?

GPT-4o (Omni) is developed by OpenAI while Solar Pro 3 is developed by Upstage. GPT-4o (Omni) has a 128K token context window vs Solar Pro 3's 128K. You can compare their actual outputs across 39 challenges on Rival to see how they differ in practice.

Which is better, GPT-4o (Omni) or Solar Pro 3?

It depends on your use case. GPT-4o (Omni) and Solar Pro 3 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 39 challenges so you can judge which fits your needs best.

How much does GPT-4o (Omni) cost compared to Solar Pro 3?

GPT-4o (Omni) costs $2.5/M input tokens and Solar Pro 3 costs $0/M input tokens. Solar Pro 3 is $2.50/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-4o (Omni) and Solar Pro 3 on Rival?

This page shows a side-by-side comparison of GPT-4o (Omni) and Solar Pro 3 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 Jan 2026

GPT-4o (Omni)vsSolar Pro 3

Solar Pro 3 is cheaper than GPT-4o (Omni) at $0/M vs $2.5/M input tokens.

GPT-4o (Omni) and Solar Pro 3 compared across 39 shared prompts
Spec	GPT-4o (Omni)	Solar Pro 3
Input price	$2.5/M tokens	Free
Output price	$10/M tokens	Free
Context window	128K tokens	128K tokens
Weights	Closed	—
Free API (OpenRouter)	No	No
Released	May 2024	Jan 2026