ChatGPT-4o (March 2025) vs Inception: Mercury
Compare ChatGPT-4o (March 2025) by OpenAI against Inception: Mercury by Inception, context windows of 128K vs 32K, tested across 32 shared challenges. Updated April 2026.
Which is better, ChatGPT-4o (March 2025) or Inception: Mercury?
ChatGPT-4o (March 2025) and Inception: Mercury are both competitive models. ChatGPT-4o (March 2025) costs $5/M input tokens vs $10/M for Inception: Mercury. Context windows: 128K vs 32K tokens. Compare their real outputs side by side below.
Key Differences Between ChatGPT-4o (March 2025) and Inception: Mercury
ChatGPT-4o (March 2025) is made by openai while Inception: Mercury is from inception. ChatGPT-4o (March 2025) has a 128K token context window compared to Inception: Mercury's 32K. On pricing, ChatGPT-4o (March 2025) costs $5/M input tokens vs $10/M for Inception: Mercury.
Our Verdict
ChatGPT-4o (March 2025)
Inception: MercuryRunner-up
No community votes yet. On paper, ChatGPT-4o (March 2025) has the edge — bigger model tier, bigger context window, major provider backing.
Too close to call
Writing DNA
Style Comparison
Similarity
100%
ChatGPT-4o (March 2025) uses 22.2x more emoji
ChatGPT-4o (March 2025)
Inception: Mercury
55%Vocabulary55%
24wSentence Length40w
0.52Hedging0.39
3.3Bold4.9
6.0Lists3.8
0.94Emoji0.04
0.63Headings1.04
0.05Transitions0.03
Based on 15 + 17 text responses
vsAsk them anything yourself
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
Free preview13 of 58 slides
FAQ