GPT-5 Pro vs OpenAI: GPT-5.3 Chat
Both have similar output pricing, while OpenAI: GPT-5.3 Chat offers a larger context window. Choose GPT-5 Pro or OpenAI: GPT-5.3 Chat based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT-5 Pro | OpenAI: GPT-5.3 Chat |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input / 1M tokens | — | $1.75 |
| Output / 1M tokens | — | $14.00 |
| Context window | — | 128K |
| Parameters | — | — |
| Open weights | No | — |
| Released | Oct 2025 | — |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.