AI model · Upstage
Solar Mini 4
Model ID: upstage/solar-mini4
- Input
- $0.05 per 1M tokens
- Output
- $0.20 per 1M tokens
- Context
- 524K tokens at once
- Max output
- 131K tokens per reply
- Released
- 23 Sep 2026 Upstage
What it can do
- YesReasoning
- YesTool calling
- NoImage input
- NoOpen weights
- NoFree to use
Takes text; gives text.
How its listing describes it
Solar Mini 4 is Upstage's compact, cost-efficient language model, a 35B-parameter mixture-of-experts with 3B active parameters and a 524K context window. It is built for agentic use cases where response...
Sources
- Upstage: Solar Mini 4 on OpenRouter — read 2 Oct 2026