Upstage Solar LLM and Document AI

Upstage Co., Ltd. is a South Korean AI company founded in October 2020 by Sung Kim, former head of Naver's Clova team, with offices in Gangnam, Seoul. It builds its own Solar family of large language models and document AI so that insurers, banks, hospitals and manufacturers can automate work on long and complex documents.

The stack combines Solar LLMs (including the agentic Solar Pro 4 and the compact Solar Mini 4), Document Parse, which turns PDFs, scans, spreadsheets, slides and emails into structured HTML or Markdown, Information Extract for key-value data from invoices, claims and contracts, and Upstage Studio for building document-workflow agents. Models are available by API, through AWS, Azure and Snowflake marketplaces, or installed on-premises.

• Solar Pro 4: agentic LLM for multi-step work with tool calling and long-document reasoning.
• Solar Mini 4: compact model with 3B active parameters for high-volume, cost-sensitive agents.
• Document Parse: converts PDFs, scans, spreadsheets, slides and emails into HTML or Markdown with table and chart recognition.
• Information Extract: pulls structured key-value data from invoices, claims and contracts.
• Upstage Studio: platform for building and running document-workflow agents.
• Deployment choice: REST API, AWS, Azure and Snowflake marketplaces, or on-premises.

Insurers in Vietnam can automate claim intake by parsing medical invoices and forms. Banks can extract data from loan dossiers and contracts before credit review. Companies building internal RAG assistants can use Document Parse to prepare scanned archives for search.

Turns scanned and complex documents into LLM-ready data so RAG and agent projects get cleaner inputs. Document Parse is priced at USD 0.01 per page and averages about 0.6 seconds per page, according to the product page. On-premises installation lets regulated firms keep documents in-house. Hanwha Life reports OCR accuracy above 95%.

Document-heavy industries such as insurance, banking and healthcare are adopting generative AI first on paperwork: claims, contracts, invoices and medical records. Asian enterprises increasingly prefer regional or sovereign LLMs that can be deployed on-premises, a requirement also common among Vietnamese banks and insurers.

Founded in October 2020 by Sung Kim; Series A of KRW 31.6 billion in 2021 and Series B of KRW 100 billion in April 2024 with investors including SoftBank Ventures Asia, KDB and KT. Released Solar Pro 2 in July 2025 and Solar Open 2 in July 2026. Named to the CB Insights AI 100 (2025). Holds SOC 2, HIPAA, ISO 27001 and ISO 27701.