Compare models
Prices, specs and price history side by side. Data as of 2026-08-02
| Spec | GPT-5.3-CodexOpenAI | GPT-5 NanoOpenAI |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Context window | 400K | 400K |
| Max output | 128K | 128K |
| Modalities | text, image, file → text | text, image, file → text |
| Open source | No | No |
| License | - | - |
| Released | - | - |
| Status | active | active |
| Input$ / 1M | 1.75 | 0.05cheapest |
| Output$ / 1M | 14 | 0.4cheapest |
| Cached$ / 1M | 0.175 | 0.005cheapest |
| Channel | openrouter | openrouter |
Price history
Overlaid price history. Solid = verified by us, dashed = estimated (archive).
GPT-5.3-CodexGPT-5 Nanoverified by usestimated (archive)