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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 Nano is 19ms faster than OpenAI: GPT-5
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
OpenAI: GPT-5 Nano is 61% faster
| Spec | OpenAI: GPT-5 | OpenAI: GPT-5 Nano |
|---|---|---|
| Provider | openai | openai |
| Input price / 1M tokens | Free | Free |
| Output price / 1M tokens | — | — |
| Context window | 400k tokens | 400k tokens |
| Latency (p50) | 50ms | 31ms |
| Best benchmark score | — | — |
| Open source | No | No |
GPT-5 is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy...
GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger...
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