S
Solar Pro 4
Upstage
🧠 Language Model
Upstage flagship agentic model. 512K context (API-confirmed family), tool calling, structured outputs and opt-in reasoning. English/Korean/Japanese.
Specifications
Input modalitiestext
Output modalitiestext
Capabilitieschat, reasoning, tools
Relative speed●●●○○ Average
Context window524,288 tokens
Max output131,072 tokens
Tool callingYes
Input price$0.525 / 1M
Output price$2.10 / 1M
Pricing
$0.525 / 1M input tokens · $2.10 / 1M output tokens
Platform credit pricing — live rates on the Models page.