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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-4o is 100% cheaper than OpenAI: GPT-5 Pro
⚡OpenAI: GPT-4o is 20ms faster than OpenAI: GPT-5 Pro
📈OpenAI: GPT-4o scores 1270.0 pts higher on benchmarks
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
OpenAI: GPT-4o is 125% faster
| Spec | OpenAI: GPT-4o | OpenAI: GPT-5 Pro |
|---|---|---|
| Provider | openai | openai |
| Input price / 1M tokens | Free | $15.00 |
| Output price / 1M tokens | — | $120.00 |
| Context window | 128k tokens | 400k tokens |
| Latency (p50) | 16ms | 36ms |
| Best benchmark score | 1270.0 | — |
| Open source | No | No |
GPT-4o ("o" for "omni") is OpenAI's latest AI model, supporting both text and image inputs with text outputs. It maintains the intelligence level of [GPT-4 Turbo](/models/openai/gpt-4-turbo) while being twice as...
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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