GPT-1 vs GPT-4o (Omni)

Compare GPT-1 and GPT-4o (Omni), both from OpenAI, context windows of 1K vs 128K, tested across 6 shared challenges. Updated March 2026.

Which is better, GPT-1 or GPT-4o (Omni)?

GPT-1 and GPT-4o (Omni) are both competitive models. Context windows: 1K vs 128K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-1 and GPT-4o (Omni)

GPT-1 is made by openai while GPT-4o (Omni) is from openai. GPT-1 has a 1K token context window compared to GPT-4o (Omni)'s 128K.

Our Verdict
GPT-4o (Omni)
GPT-4o (Omni)
GPT-1
GPT-1Runner-up

No community votes yet. On paper, GPT-4o (Omni) has the edge — bigger model tier, newer, bigger context window.

Slight edge
FAQ

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