ChatGPT-4o (March 2025) vs DeepSeek R1
Compare ChatGPT-4o (March 2025) by OpenAI against DeepSeek R1 by DeepSeek, context windows of 128K vs 128K, tested across 32 shared challenges. Updated May 2026.
Which is better, ChatGPT-4o (March 2025) or DeepSeek R1?
ChatGPT-4o (March 2025) and DeepSeek R1 are both competitive models. ChatGPT-4o (March 2025) costs $5/M input tokens vs $0.55/M for DeepSeek R1. Context windows: 128K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between ChatGPT-4o (March 2025) and DeepSeek R1
ChatGPT-4o (March 2025) is made by openai while DeepSeek R1 is from deepseek. ChatGPT-4o (March 2025) has a 128K token context window compared to DeepSeek R1's 128K. On pricing, ChatGPT-4o (March 2025) costs $5/M input tokens vs $0.55/M for DeepSeek R1.
Per 1M tokens
DeepSeek R1 is cheaper on both — 9.1× input, 6.8× output
No community votes yet. On paper, ChatGPT-4o (March 2025) has the edge — bigger model tier, newer.
DeepSeek R1 is 6.8x cheaper per token — worth considering if cost matters.
Style Comparison
ChatGPT-4o (March 2025) uses 21.9x more emoji
