OpenAI: GPT-5.3-Codex
openai/gpt-5.3-codex
GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broader reasoning and professional knowledge capabilities of GPT-5.2. It achieves state-of-the-art results...
Modalities
TextImageFile
In / out price
₩3,071 / ₩24,570
1M
Context
400K
Released
Feb 25, 2026
Pricing
Prices are quoted in Korean won. Changes to the exchange rate or margin show up immediately.
| Input (prompt) | ₩3,071 / 1M |
| Output (completion) | ₩24,570 / 1M |
| Cache read | ₩307 / 1M |
| Cache write | — |
1,000 input tokens plus 1,000 output tokens costs about ₩27.64.