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Side-by-side comparison of API pricing, context window, latency, and benchmark performance. Data refreshed daily from provider APIs and ModelStop's own latency probes.
⚡OpenAI: GPT-5.1-Codex is 9ms faster than gpt-4.1-nano-2025-04-14
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
OpenAI: GPT-5.1-Codex is 29% faster
| Spec | gpt-4.1-nano-2025-04-14 | OpenAI: GPT-5.1-Codex |
|---|---|---|
| Provider | openai | openai |
| Input price / 1M tokens | Free | Free |
| Output price / 1M tokens | — | — |
| Context window | — | 400k tokens |
| Latency (p50) | 40ms | 31ms |
| Best benchmark score | — | — |
| Open source | No | No |
I don't have reliable information about a model named "gpt-4.1-nano-2025-04-14" in my training data, so I cannot provide a factually accurate description of this specific model.
GPT-5.1-Codex is a specialized version of GPT-5.1 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
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