OpenAI: GPT-5.1
openai/gpt-5.1
GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5. It uses adaptive reasoning...
Modalities
ImageTextFile
In / out price
₩2,194 / ₩17,550
1M
Context
400K
Released
Nov 14, 2025
Pricing
Prices are quoted in Korean won. Changes to the exchange rate or margin show up immediately.
| Input (prompt) | ₩2,194 / 1M |
| Output (completion) | ₩17,550 / 1M |
| Cache read | ₩219 / 1M |
| Cache write | — |
1,000 input tokens plus 1,000 output tokens costs about ₩19.74.