GPT-4o (Omni) vs Sonar Pro Search

Compare GPT-4o (Omni) by OpenAI against Sonar Pro Search by Perplexity, context windows of 128K vs 200K, tested across 52 shared challenges. Updated March 2026.

Which is better, GPT-4o (Omni) or Sonar Pro Search?

GPT-4o (Omni) and Sonar Pro Search are both competitive models. GPT-4o (Omni) costs $2.5/M input tokens vs $3/M for Sonar Pro Search. Context windows: 128K vs 200K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-4o (Omni) and Sonar Pro Search

GPT-4o (Omni) is made by openai while Sonar Pro Search is from perplexity. GPT-4o (Omni) has a 128K token context window compared to Sonar Pro Search's 200K. On pricing, GPT-4o (Omni) costs $2.5/M input tokens vs $3/M for Sonar Pro Search.

Our Verdict
GPT-4o (Omni)
GPT-4o (Omni)
Sonar Pro Search
Sonar Pro Search

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

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