Solar Pro 4
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...
The figures
- Made by
- Upstage
- Model ID
- upstage/solar-pro4
- Input
- $0.09 per million tokens
- Output
- $0.36 per million tokens
- Context window
- 524K tokens
- Longest answer
- 131K tokens
- Takes in
- text
- Gives back
- text
- Reasoning
- Yes
- Tool calling
- Yes
- Reads images
- No
- Open weights
- No
- Released
- 10 Aug 2026
Read on 3 Oct 2026.