GPT-4.1 Nano vs GPT-5.3-Codex
GPT-4.1 Nano leads in 2 of 8 categories
Arena ELO
Tie
Cheaper
GPT-4.1 Nano
Faster
Tie
Detailed Comparison
| Category | GPT-4.1 Nano | GPT-5.3-Codex |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Context Window | 128K | 128K |
| Input Price ($/1M) | $0.1 WIN | $1.75 |
| Output Price ($/1M) | $0.4 WIN | $14 |
| Arena ELO | N/A | N/A |
| Coding | N/A | N/A |
| Reasoning | N/A | N/A |
| Speed (tokens/sec) | N/A | N/A |
| Open Source | No | No |
Frequently Asked Questions
Which is cheaper, GPT-4.1 Nano or GPT-5.3-Codex?
GPT-4.1 Nano is approximately 97% cheaper than GPT-5.3-Codex per million tokens.
Which has a larger context window?
GPT-4.1 Nano supports 128K context, while GPT-5.3-Codex supports 128K.
Is GPT-4.1 Nano or GPT-5.3-Codex open source?
GPT-4.1 Nano is proprietary. GPT-5.3-Codex is proprietary.
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