ChatGPT-4o (March 2025) vs GPT-6 Astra Pro
ChatGPT-4o (March 2025) is cheaper than GPT-6 Astra Pro at $5/M vs $10/M input tokens.
Retro macOS UI Recreation
Classic Mac desktop rebuilt as one interactive HTML file. Windows, menus, the lot.
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Which answer wins?
Price and specs
Not enough votes to call it. On the specs, GPT-6 Astra Pro has the edge: newer, bigger context window. ChatGPT-4o (March 2025) costs 3.3x less per token.
| Spec | ChatGPT-4o (March 2025) | GPT-6 Astra Pro |
|---|---|---|
| Input price | $5/M tokens | $10/M tokens |
| Output price | $15/M tokens | $50/M tokens |
| Context window | 128K tokens | 1.1M tokens |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | Mar 2025 | Sep 2026 |
| At 10M a month | $50.00 | $100 |
Input tokens at list price. No caching, no batch discount.
Where to run it
ChatGPT-4o (March 2025)
No hosts listed on OpenRouter.
GPT-6 Astra Pro2 hosts
Per million tokens. Prices and uptime via OpenRouter, checked 12 Oct 2026.
Common questions
What is the difference between ChatGPT-4o (March 2025) and GPT-6 Astra Pro?
Both are developed by OpenAI but target different use cases. ChatGPT-4o (March 2025) has a 128K token context window vs GPT-6 Astra Pro's 1.1M. You can compare their actual outputs across 2 challenges on Rival to see how they differ in practice.
Which is better, ChatGPT-4o (March 2025) or GPT-6 Astra Pro?
It depends on your use case. ChatGPT-4o (March 2025) and GPT-6 Astra Pro each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 2 challenges so you can judge which fits your needs best.
How much does ChatGPT-4o (March 2025) cost compared to GPT-6 Astra Pro?
ChatGPT-4o (March 2025) costs $5/M input tokens and GPT-6 Astra Pro costs $10/M input tokens. ChatGPT-4o (March 2025) is $5.00/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 ChatGPT-4o (March 2025) and GPT-6 Astra Pro on Rival?
This page shows a side-by-side comparison of ChatGPT-4o (March 2025) and GPT-6 Astra Pro 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.
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