Solar Mini 4 is Upstage's compact, cost-efficient agentic language model, with 35B total parameters and 3B active parameters. It supports long-context chat, reasoning, structured outputs, and tool calling in Korean, English, and Japanese.
Upstage Solar Decide answers typed Noul, Choice, and Score questions against structured state.
Solar Pro 4 is Upstage's agentic language model for multi-step tool use, terminal tasks, long-document reasoning, and multilingual work.
Solar Open 2 250B is Upstage's open-weight 250B-parameter hybrid-attention mixture-of-experts model with 15B active parameters and a 1M-token context window.
Solar Open 100B is Upstage's open-weight 102.6B-parameter mixture-of-experts model with 12B active parameters per token.
Solar Pro 2 is Upstage's 31B-parameter multilingual reasoning model for English, Korean, and Japanese.
Solar Pro 2 (2025-09-09) is a dated release of Upstage's 31B-parameter multilingual reasoning model.
Solar Pro 2 (2025-07-10) is a dated release of Upstage's 31B-parameter multilingual reasoning model.
Solar Pro 2 Preview is the preview release of Upstage's 31B-parameter multilingual reasoning model.
Solar Mini is Upstage's compact 10.7B-parameter multilingual model for efficient text generation.
Solar Pro is Upstage's 22B-parameter multilingual language model for English, Korean, and Japanese text generation.
Upstage Document Classify assigns user-defined document categories without model training.
Upstage Document OCR extracts text from scanned documents and images.
Upstage Document Parse converts PDFs, images, spreadsheets, and presentations into structured HTML or Markdown.
Upstage Information Extract returns structured key fields from arbitrary documents using a user-defined schema.
Upstage's second-generation passage embedding model for multilingual semantic retrieval.
Upstage's second-generation query embedding model for multilingual semantic retrieval.
Solar Pro 3 (2026-01-26) is the first dated release of Upstage's 102B-parameter, 12B-active mixture-of-experts model.
Legacy Upstage passage embedding model, available until the scheduled end of service on 2026-12-31 UTC.
Legacy Upstage query embedding model, available until the scheduled end of service on 2026-12-31 UTC.
Solar Pro 3 is Upstage's 102B-parameter mixture-of-experts model, activating 12B parameters per token for multilingual reasoning and agentic workflows.