What is the difference between DeepSeek Prover V2 and GPT-6 Astra?

DeepSeek Prover V2 is developed by DeepSeek while GPT-6 Astra is developed by OpenAI. DeepSeek Prover V2 has a 164K token context window vs GPT-6 Astra's 1.1M. You can compare their actual outputs across 6 challenges on Rival to see how they differ in practice.

Which is better, DeepSeek Prover V2 or GPT-6 Astra?

It depends on your use case. DeepSeek Prover V2 and GPT-6 Astra 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 DeepSeek Prover V2 cost compared to GPT-6 Astra?

DeepSeek Prover V2 costs $0/M input tokens and GPT-6 Astra costs $10/M input tokens. DeepSeek Prover V2 is $10.00/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 DeepSeek Prover V2 and GPT-6 Astra on Rival?

This page shows a side-by-side comparison of DeepSeek Prover V2 and GPT-6 Astra 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

DeepSeek Prover V2vsGPT-6 Astra

DeepSeek Prover V2 is cheaper than GPT-6 Astra at $0/M vs $10/M input tokens.

DeepSeek Prover V2 and GPT-6 Astra compared across 6 shared prompts
Spec	DeepSeek Prover V2	GPT-6 Astra
Input price	Free	$10/M tokens
Output price	Free	$50/M tokens
Context window	164K tokens	1.1M tokens
Weights	Open	Closed
Free API (OpenRouter)	No	No
Released	Apr 2025	Sep 2026