Solar Mini 4
UpstageCompact
ThinkingTool UseStructured Output
About this model
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...
Performance Tier
Compact
Solar Mini 4 is a compact model from Upstage : optimized for speed and affordability.
Small, fast, and affordable. Optimized for speed and low cost, great for high-volume or simple tasks.
Pricing
This model is included in Elosia plansEco
Minimal cost. Ideal for very high volume or simple tasks.
| Type | per 1M tokens |
|---|---|
| Input (prompt) | $0.050 |
| Output (completion) | $0.200 |
| Cache read | $0.0050 |
Capabilities
Context Length524K
Max Output Tokens131K
TokenizerOther
Inputtext
Outputtext
Release DateSeptember 23, 2026
Recommended Use Cases
General ChatSummarizationCustomer SupportData ExtractionTranslation
Strengths
- Sparse mixture-of-experts with 35B total and only 3B active parameters per token, built for response speed on agentic workloads
- 512K-token context with up to 128K of output in a single response
- Tool calling, parallel tool calls and structured outputs supported on the API
- Optional reasoning mode with adjustable effort, from no reasoning up to maximum depth
- Fluent Korean alongside English and Japanese support
Limitations
- Upstage publishes no benchmark table, so its capabilities cannot be checked against standard suites
- Hard scope limits: text only, three languages, closed weights
Frequently asked questions
Resources
This model may use your data for training
