GPT-4.1 Nano vs GPT-5 Pro
Compare GPT-4.1 Nano and GPT-5 Pro, both from OpenAI, context windows of 1.0M vs 400K, tested across 42 shared challenges. Updated May 2026.
Which is better, GPT-4.1 Nano or GPT-5 Pro?
GPT-4.1 Nano and GPT-5 Pro are both competitive models. GPT-4.1 Nano costs $0.1/M input tokens vs $15/M for GPT-5 Pro. Context windows: 1048K vs 400K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-4.1 Nano and GPT-5 Pro
GPT-4.1 Nano is made by openai while GPT-5 Pro is from openai. GPT-4.1 Nano has a 1048K token context window compared to GPT-5 Pro's 400K. On pricing, GPT-4.1 Nano costs $0.1/M input tokens vs $15/M for GPT-5 Pro.
Per 1M tokens
GPT-4.1 Nano is cheaper on both — 150× input, 300× output
No community votes yet. On paper, GPT-5 Pro has the edge — bigger model tier, newer.
GPT-4.1 Nano is 300x cheaper per token — worth considering if cost matters.
Style Comparison
GPT-4.1 Nano uses 561.5x more bold
