GPT-4.1 Nano vs Claude Opus 4

Compare GPT-4.1 Nano by OpenAI against Claude Opus 4 by Anthropic, context windows of 1.0M vs 200K, tested across 27 shared challenges. Updated March 2026.

Which is better, GPT-4.1 Nano or Claude Opus 4?

GPT-4.1 Nano and Claude Opus 4 are both competitive models. GPT-4.1 Nano costs $0.1/M input tokens vs $15/M for Claude Opus 4. Context windows: 1048K vs 200K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-4.1 Nano and Claude Opus 4

GPT-4.1 Nano is made by openai while Claude Opus 4 is from anthropic. GPT-4.1 Nano has a 1048K token context window compared to Claude Opus 4's 200K. On pricing, GPT-4.1 Nano costs $0.1/M input tokens vs $15/M for Claude Opus 4.

Our Verdict
Claude Opus 4
Claude Opus 4
GPT-4.1 Nano
GPT-4.1 NanoRunner-up

No community votes yet. On paper, Claude Opus 4 has the edge — bigger model tier, newer.

GPT-4.1 Nano is 188x cheaper per token — worth considering if cost matters.

Too close to call
vs

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