Claude Sonnet 5.5 vs 
GPT-6 Astra Pro
Claude Sonnet 5.5 is cheaper than GPT-6 Astra Pro at $2/M vs $10/M input tokens.
Pokémon Battle UI Recreation
Pokémon battle screen you can actually click. One HTML file.
Loading the build
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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: bigger model tier. Claude Sonnet 5.5 costs 5.0x less per token.
| Spec | Claude Sonnet 5.5 | GPT-6 Astra Pro |
|---|---|---|
| Input price | $2/M tokens | $10/M tokens |
| Output price | $10/M tokens | $50/M tokens |
| Context window | 1.0M tokens | 1.1M tokens |
| Weights | Closed | Closed |
| Free API (OpenRouter) | No | No |
| Released | Sep 2026 | Sep 2026 |
| At 10M a month | $20.00 | $100 |
Input tokens at list price. No caching, no batch discount.
Where to run it
GPT-6 Astra Pro2 hosts
Per million tokens. Prices and uptime via OpenRouter, checked 29 Sep 2026.
Common questions
What is the difference between Claude Sonnet 5.5 and GPT-6 Astra Pro?
Claude Sonnet 5.5 is developed by Anthropic while GPT-6 Astra Pro is developed by OpenAI. Claude Sonnet 5.5 has a 1.0M token context window vs GPT-6 Astra Pro's 1.1M. You can compare their actual outputs across 6 challenges on Rival to see how they differ in practice.
Which is better, Claude Sonnet 5.5 or GPT-6 Astra Pro?
It depends on your use case. Claude Sonnet 5.5 and GPT-6 Astra Pro each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 6 challenges so you can judge which fits your needs best.
How much does Claude Sonnet 5.5 cost compared to GPT-6 Astra Pro?
Claude Sonnet 5.5 costs $2/M input tokens and GPT-6 Astra Pro costs $10/M input tokens. Claude Sonnet 5.5 is $8.00/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 Claude Sonnet 5.5 and GPT-6 Astra Pro on Rival?
This page shows a side-by-side comparison of Claude Sonnet 5.5 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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