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GPT-4.1 Nano vs GPT-4o (Omni)

Compare GPT-4.1 Nano and GPT-4o (Omni), both from OpenAI, context windows of 1.0M vs 128K, tested across 39 shared challenges. Updated March 2026.

Which is better, GPT-4.1 Nano or GPT-4o (Omni)?

GPT-4.1 Nano and GPT-4o (Omni) are both competitive models. GPT-4.1 Nano costs $0.1/M input tokens vs $2.5/M for GPT-4o (Omni). Context windows: 1048K vs 128K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-4.1 Nano and GPT-4o (Omni)

GPT-4.1 Nano is made by openai while GPT-4o (Omni) is from openai. GPT-4.1 Nano has a 1048K token context window compared to GPT-4o (Omni)'s 128K. On pricing, GPT-4.1 Nano costs $0.1/M input tokens vs $2.5/M for GPT-4o (Omni).

Our Verdict
GPT-4.1 Nano
GPT-4.1 Nano
GPT-4o (Omni)
GPT-4o (Omni)

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

GPT-4.1 Nano is 25x cheaper per token — worth considering if cost matters.

Too close to call
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