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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-3.5 Turbo is 97% cheaper than OpenAI: GPT-5 Pro
⚡OpenAI: GPT-3.5 Turbo is 17ms faster than OpenAI: GPT-5 Pro
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
OpenAI: GPT-3.5 Turbo is 2900% cheaper
OpenAI: GPT-3.5 Turbo is 89% faster
| Spec | OpenAI: GPT-3.5 Turbo | OpenAI: GPT-5 Pro |
|---|---|---|
| Provider | openai | openai |
| Input price / 1M tokens | $0.50 | $15.00 |
| Output price / 1M tokens | $1.50 | $120.00 |
| Context window | 16k tokens | 400k tokens |
| Latency (p50) | 19ms | 36ms |
| Best benchmark score | — | — |
| Open source | No | No |
GPT-3.5 Turbo is OpenAI's fastest model. It can understand and generate natural language or code, and is optimized for chat and traditional completion tasks. Training data up to Sep 2021.
GPT-5 Pro 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...
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