OpenAI: GPT-5.6 Luna vs GPT-5 Chat (latest)
OpenAI: GPT-5.6 Luna is cheaper on output tokens, while OpenAI: GPT-5.6 Luna offers a larger context window. Choose OpenAI: GPT-5.6 Luna or GPT-5 Chat (latest) based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | OpenAI: GPT-5.6 Luna | GPT-5 Chat (latest) |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input / 1M tokens | $0.20 | $1.25 |
| Output / 1M tokens | $1.20 | $10.00 |
| Context window | 1.1M | 400K |
| Parameters | — | — |
| Open weights | — | No |
| Released | — | Aug 2025 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.