GPT-4o (Omni) vs Inception: Mercury 2
Compare GPT-4o (Omni) by OpenAI against Inception: Mercury 2 by Inception, context windows of 128K vs 128K, tested across 53 shared challenges. Updated April 2026.
Which is better, GPT-4o (Omni) or Inception: Mercury 2?
GPT-4o (Omni) and Inception: Mercury 2 are both competitive models. GPT-4o (Omni) costs $2.5/M input tokens vs $0.25/M for Inception: Mercury 2. Context windows: 128K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-4o (Omni) and Inception: Mercury 2
GPT-4o (Omni) is made by openai while Inception: Mercury 2 is from inception. GPT-4o (Omni) has a 128K token context window compared to Inception: Mercury 2's 128K. On pricing, GPT-4o (Omni) costs $2.5/M input tokens vs $0.25/M for Inception: Mercury 2.
Per 1M tokens
Inception: Mercury 2 is cheaper on both — 10× input, 13× output
No community votes yet. On paper, GPT-4o (Omni) has the edge — bigger model tier, major provider backing.
Inception: Mercury 2 is 13x cheaper per token — worth considering if cost matters.
Style Comparison
Inception: Mercury 2 uses 3.3x more emoji
