ChatGPT-4o (March 2025) vs DeepSeek Prover V2

Compare ChatGPT-4o (March 2025) by OpenAI against DeepSeek Prover V2 by DeepSeek, context windows of 128K vs 164K, tested across 4 shared challenges. Updated March 2026.

Which is better, ChatGPT-4o (March 2025) or DeepSeek Prover V2?

ChatGPT-4o (March 2025) and DeepSeek Prover V2 are both competitive models. ChatGPT-4o (March 2025) costs $5/M input tokens vs $0/M for DeepSeek Prover V2. Context windows: 128K vs 164K tokens. Compare their real outputs side by side below.

Key Differences Between ChatGPT-4o (March 2025) and DeepSeek Prover V2

ChatGPT-4o (March 2025) is made by openai while DeepSeek Prover V2 is from deepseek. ChatGPT-4o (March 2025) has a 128K token context window compared to DeepSeek Prover V2's 164K. On pricing, ChatGPT-4o (March 2025) costs $5/M input tokens vs $0/M for DeepSeek Prover V2.

Our Verdict
ChatGPT-4o (March 2025)
ChatGPT-4o (March 2025)
DeepSeek Prover V2
DeepSeek Prover V2

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call
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