OpenAI: GPT-5.4
openai/gpt-5.4
GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for...
Modalities
TextImageFile
In / out price
₩4,388 / ₩26,325
1M
Context
1.05M
Released
Mar 6, 2026
Pricing
Prices are quoted in Korean won. Changes to the exchange rate or margin show up immediately.
| Input (prompt) | ₩4,388 / 1M |
| Output (completion) | ₩26,325 / 1M |
| Cache read | ₩439 / 1M |
| Cache write | — |
1,000 input tokens plus 1,000 output tokens costs about ₩30.71.