What is the difference between Claude 3.7 Thinking Sonnet and GPT-6 Astra Pro?

Claude 3.7 Thinking Sonnet is developed by Anthropic while GPT-6 Astra Pro is developed by OpenAI. Claude 3.7 Thinking Sonnet has a 200K 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 3.7 Thinking Sonnet or GPT-6 Astra Pro?

It depends on your use case. Claude 3.7 Thinking Sonnet 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 3.7 Thinking Sonnet cost compared to GPT-6 Astra Pro?

Claude 3.7 Thinking Sonnet costs $6/M input tokens and GPT-6 Astra Pro costs $10/M input tokens. Claude 3.7 Thinking Sonnet is $4.00/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 3.7 Thinking Sonnet and GPT-6 Astra Pro on Rival?

This page shows a side-by-side comparison of Claude 3.7 Thinking Sonnet 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.

Updated Sep 2026

Claude 3.7 Thinking SonnetvsGPT-6 Astra Pro

Claude 3.7 Thinking Sonnet is cheaper than GPT-6 Astra Pro at $6/M vs $10/M input tokens.

Claude 3.7 Thinking Sonnet and GPT-6 Astra Pro compared across 6 shared prompts
Spec	Claude 3.7 Thinking Sonnet	GPT-6 Astra Pro
Input price	$6/M tokens	$10/M tokens
Output price	$30/M tokens	$50/M tokens
Context window	200K tokens	1.1M tokens
Weights	—	Closed
Free API (OpenRouter)	No	No
Released	Feb 2025	Sep 2026