# Upstage: Solar Pro 4

Provider: upstage  
Category: llm  
Model ID: `upstage/solar-pro4`

Solar Pro 4 is Upstage's cost-efficient large language model, featuring a 524K context window. It is built for long-horizon tasks and agentic workflows, with strong capabilities in office productivity, document-intensive...

## Specs

- Context length: 524288 tokens
- Max output: 131072 tokens
- Modalities: text
- Released: 2026-08-10

## Pricing

- Input: $0.03 per million tokens
- Output: $0.12 per million tokens

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Last verified: 2026-09-04T02:00:56.012Z  
Canonical URL: https://switchy.build/directory/models/solar-pro4