Upstage: Solar Mini 4
upstage/solar-mini-4
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 speed and cost matter, with fluent Korean alongside strong English and Japanese, and support for long-context workloads.
Model specifications
- Input
- text
- Output
- text
- Context
- 524,288 tokens
- Max output
- 131,072 tokens
- Input price
- $0.05 / 1M tokens
- Output price
- $0.2 / 1M tokens
- Released
- 2026-09-24
Capabilities
- Streaming
- Function calling
- Vision
- JSON mode
Provider pricing, discounts and data privacy
Compare effective provider prices, published discounts, regions, retention policies, training use, compliance, and privacy links by service tier.
Standard service tier
1 available provider · discounts up to 50% · tier input average $0.05 / 1M tokens · tier output average $0.2 / 1M tokens
Upstage
Tier: Standard
Pricing
- Input
- $0.05 / 1M tokens
- Output
- $0.2 / 1M tokens
- Cache read
- $0.005 / 1M tokens
Discounts
- Input: 50% off — list $0.1 / 1M tokens, discounted $0.05 / 1M tokens, effective $0.05 / 1M tokens
- Cache read: 50% off — list $0.01 / 1M tokens, discounted $0.005 / 1M tokens, effective $0.005 / 1M tokens
- Output: 50% off — list $0.4 / 1M tokens, discounted $0.2 / 1M tokens, effective $0.2 / 1M tokens
Data privacy and compliance
- Zero data retention
- Yes
- Data retention
- Unknown retention
- Used for training
- Unknown
- Data collection
- Moderated
- No
- GDPR compliant
- No
- HIPAA compliant
- No
- SOC 2 certified
- No
- BYOK supported
- No
Privacy policy · Terms · Official website · Documentation · Support
Frequently asked questions
- What is Upstage: Solar Mini 4?
- 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 speed and cost matter, with fluent Korean alongside strong English and Japanese, and support for long-context workloads.
- How much does Upstage: Solar Mini 4 cost?
- Input costs start at $0.05 / 1M tokens and output costs start at $0.2 / 1M tokens. Provider-level prices vary by service tier.
- Are provider discounts available for Upstage: Solar Mini 4?
- Yes. Current provider offers include discounts of up to 50% from list price. The provider table shows list, discounted, and effective prices.
- What is the context length of Upstage: Solar Mini 4?
- Upstage: Solar Mini 4 supports a 524,288 token context window and up to 131,072 output tokens.
- What capabilities does Upstage: Solar Mini 4 support?
- Upstage: Solar Mini 4 supports Streaming, Function calling, Vision, JSON mode.
- Which providers offer Upstage: Solar Mini 4?
- Upstage: Solar Mini 4 is available from Upstage.
- How do providers handle data privacy for Upstage: Solar Mini 4?
- 1 of 1 providers report that customer data is not used for training, and 1 offer zero-data-retention routing. Retention, compliance, and privacy-policy links are listed per provider.