What is the difference between GPT-6 Astra and OpenAI o3?

Both are developed by OpenAI but target different use cases. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, GPT-6 Astra or OpenAI o3?

It depends on your use case. GPT-6 Astra and OpenAI o3 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 GPT-6 Astra cost compared to OpenAI o3?

GPT-6 Astra costs $10/M input tokens and OpenAI o3 costs $10/M input tokens. OpenAI o3 is $0.00/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-6 Astra and OpenAI o3 on Rival?

This page shows a side-by-side comparison of GPT-6 Astra and OpenAI o3 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

GPT-6 AstravsOpenAI o3

GPT-6 Astra is the newer model, released after OpenAI o3.

GPT-6 Astra and OpenAI o3 compared across 53 shared prompts
Spec	GPT-6 Astra	OpenAI o3
Input price	$10/M tokens	$10/M tokens
Output price	$50/M tokens	$40/M tokens
Context window	1.1M tokens	—
Weights	Closed	Closed
Free API (OpenRouter)	No	No
Released	Sep 2026	Apr 2025