GPT-4o (Omni) vs Sonoma Sky Alpha
Compare GPT-4o (Omni) by OpenAI against Sonoma Sky Alpha by OpenRouter, context windows of 128K vs 2.0M, tested across 35 shared challenges. Updated April 2026.
Which is better, GPT-4o (Omni) or Sonoma Sky Alpha?
GPT-4o (Omni) and Sonoma Sky Alpha are both competitive models. GPT-4o (Omni) costs $2.5/M input tokens vs $0/M for Sonoma Sky Alpha. Context windows: 128K vs 2000K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-4o (Omni) and Sonoma Sky Alpha
GPT-4o (Omni) is made by openai while Sonoma Sky Alpha is from openrouter. GPT-4o (Omni) has a 128K token context window compared to Sonoma Sky Alpha's 2000K. On pricing, GPT-4o (Omni) costs $2.5/M input tokens vs $0/M for Sonoma Sky Alpha.
Per 1M tokens
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Style Comparison
Sonoma Sky Alpha uses 5.1x more emoji
