GPT-5.5 Instant vs GPT-5 Chat (latest)
Both have similar output pricing, while GPT-5 Chat (latest) offers a larger context window. Choose GPT-5.5 Instant or GPT-5 Chat (latest) based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT-5.5 Instant | GPT-5 Chat (latest) |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input / 1M tokens | — | $1.25 |
| Output / 1M tokens | — | $10.00 |
| Context window | — | 400K |
| Parameters | — | — |
| Open weights | No | No |
| Released | May 2026 | Aug 2025 |
FAQ
Is GPT-5.5 Instant or GPT-5 Chat (latest) cheaper?
GPT-5.5 Instant and GPT-5 Chat (latest) have comparable output pricing.
Which has the larger context window, GPT-5.5 Instant or GPT-5 Chat (latest)?
GPT-5 Chat (latest) has the larger context window (400K tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.