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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 100% cheaper than Meituan: LongCat Flash Chat
⚡Meituan: LongCat Flash Chat is 31ms faster than OpenAI: GPT-5 Nano
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
| Spec | Meituan: LongCat Flash Chat | OpenAI: GPT-5 Nano |
|---|---|---|
| Provider | meituan | openai |
| Input price / 1M tokens | $0.20 | Free |
| Output price / 1M tokens | $0.80 | — |
| Context window | 131k tokens | 400k tokens |
| Latency (p50) | — | 31ms |
| Best benchmark score | — | — |
| Open source | No | No |
LongCat-Flash-Chat is a large-scale Mixture-of-Experts (MoE) model with 560B total parameters, of which 18.6B–31.3B (≈27B on average) are dynamically activated per input. It introduces a shortcut-connected MoE design to reduce...
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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