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GPT-4.1 Nano vs OpenAI o3

Compare GPT-4.1 Nano and OpenAI o3, both from OpenAI, tested across 40 shared challenges. Updated March 2026.

Which is better, GPT-4.1 Nano or OpenAI o3?

GPT-4.1 Nano and OpenAI o3 are both competitive models. GPT-4.1 Nano costs $0.1/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.

Key Differences Between GPT-4.1 Nano and OpenAI o3

GPT-4.1 Nano is made by openai while OpenAI o3 is from openai. On pricing, GPT-4.1 Nano costs $0.1/M input tokens vs $10/M for OpenAI o3.

Our Verdict
OpenAI o3
OpenAI o3
GPT-4.1 Nano
GPT-4.1 NanoRunner-up

No community votes yet. On paper, OpenAI o3 has the edge — bigger model tier.

GPT-4.1 Nano is 100x cheaper per token — worth considering if cost matters.

Too close to call
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