Solar Pro 4

Name: Solar Pro 4
Author: Upstage

Upstage's flagship model, specialized for agentic use

Live

Open / InstallLast updated August 22, 2026

Description

Upstage's flagship model, specialized for agentic use. Supports a context window of 524,288 tokens. Supports extended reasoning. Supports tool calling. Input priced at $0.3 per million tokens. Weights are not publicly released; access is via the provider API.

Author

Upstage

Platform

api

Pricing model

paid

Capabilities

Text generation
524,288 token context
Extended reasoning
Tool calling