Claude 3 Opus vs GPT-4.1 Nano

Compare Claude 3 Opus by Anthropic against GPT-4.1 Nano by OpenAI, context windows of 200K vs 1.0M, tested across 11 shared challenges. Updated March 2026.

Which is better, Claude 3 Opus or GPT-4.1 Nano?

Claude 3 Opus and GPT-4.1 Nano are both competitive models. Claude 3 Opus costs $15/M input tokens vs $0.1/M for GPT-4.1 Nano. Context windows: 200K vs 1048K tokens. Compare their real outputs side by side below.

Key Differences Between Claude 3 Opus and GPT-4.1 Nano

Claude 3 Opus is made by anthropic while GPT-4.1 Nano is from openai. Claude 3 Opus has a 200K token context window compared to GPT-4.1 Nano's 1048K. On pricing, Claude 3 Opus costs $15/M input tokens vs $0.1/M for GPT-4.1 Nano.

Our Verdict
Claude 3 Opus
Claude 3 Opus
GPT-4.1 Nano
GPT-4.1 Nano

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 188x cheaper per token — worth considering if cost matters.

Too close to call
FAQ

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