Upstage Chat (upstage.ai)
Solar assistant and console entry pointNot checked yetView source ↗
Live service health
The Solar Pro 4 ecosystem, verified from your browser. Each card probes its official Upstage surface — chat, API, console and the Solar Pro 4 model page — measures response time and reports exactly what it can and cannot confirm.
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Solar API (api.upstage.ai)
Solar Pro 4 model access for developersNot checked yetView source ↗
Upstage Console (console.upstage.ai)
Developer console, API keys and docsNot checked yetView source ↗
Solar Pro 4 Model Page
Flagship agentic model page and consoleNot checked yetView source ↗
The evolution of Solar Pro
From Korea's single-GPU challenger to the agentic workhorse of 2026 — the Solar Pro story in ten steps.
2023Origin
Korea builds an LLM company.
Upstage, founded by ex-Kakao AI leaders, launches the original Solar LLM and wins national recognition for English-Korean performance, setting the course for a document-first AI stack.
Upstage story ↗5 December 2024Single GPU
Solar Pro sets the efficiency bar.
Upstage positions Solar Pro as the most intelligent LLM runnable on a single GPU, opening a door to on-premise deployment for enterprises that frontier giants ignored.
Solar Pro announcement ↗15 November 2024Open weights
Solar Pro Preview goes open source.
The Solar Pro Preview weights land openly as a blueprint for the production model, promising expanded language support and longer context to follow.
Solar Pro Preview on Hugging Face ↗2025Document AI
Document Parse turns papers into tokens.
Upstage scales its Document Parse and Lay terminus engines so enterprises can feed dense PDFs, tables and office files straight into Solar-powered workflows.
Upstage Document AI ↗April 2026Flagship handoff
Solar Pro 3 carries the flagship line.
Solar Pro 3 serves as the proprietary flagship reasoning model through spring 2026, keeping Upstage competitive while the next generation is built.
Artificial Analysis ↗5 August 2026Agentic API
Solar Pro 4 launches for finishable work.
Upstage reveals solar-pro4 as an agentic API for multi-document, multi-tool jobs — 512K context, 128K max output, structured outputs and tool calling built for work that must complete.
LLM-Stats launch analysis ↗10 August 2026General availability
Solar Pro 4 reaches every gateway.
Solar Pro 4 goes live across OpenRouter, aimlapi and partner platforms with about $0.09 per million input tokens, optimized for Korean with strong English and Japanese support.
OpenRouter listing ↗12 August 2026Benchmarks
Independent scores confirm the niche.
Artificial Analysis scores Solar Pro 4 at 42 on its Intelligence Index, crediting a reasoning-model rebuild that replaced Solar Pro 3 as the flagship.
Artificial Analysis review ↗20 August 2026Enterprise play
The workhorse-agent strategy is named.
Industry analysis frames Solar Pro 4 as a reliability play for enterprise agents, promising roughly 90% lower costs than frontier models on document-heavy tasks.
The New Stack analysis ↗September 2026Today
A documented, monitored platform.
Solar Pro 4 is available directly and through gateways, and this dashboard keeps independent watch on the Upstage surfaces developers depend on.
Live monitor on this page ↗Live incident intelligence
Upstage does not publish an official incident feed. These verified references cover where Solar Pro 4 service signals actually come from — official notices, gateway health and community reports.
Upstage status expectations
Upstage does not operate a public status page or incident feed. This monitor probes the public surfaces instead, and the references below point to primary sources worth watching when something feels off.
Upstage ↗Platform notices via Upstage
Upstage announces pricing, model and platform changes through its news and blog channels — the closest official signal to service-affecting updates.
Upstage news ↗Gateway health signals
Because Solar Pro 4 is distributed through OpenRouter and other gateways, gateway status pages can reveal upstream Upstage incidents from a second angle.
OpenRouter status ↗Community outage reports
Developer communities surface Solar Pro 4 interruptions in real time. Treat them as signals to verify against your own probes, not confirmed incidents.
Reddit r/LocalLLaMA ↗Browser-side checks60-second refreshUTC timestampsNo false greenIndependent monitorAccessible motion
Built for clarity
Live means sourced, not simulated. This dashboard never converts an unreachable endpoint into a reassuring green state — when a check cannot complete, it says Unreachable and sends you to the source.
What a green card means
Your browser reached the official surface within the healthy latency window during the last check. It is a direct, recent observation — not a cached promise.
What a grey card means
The probe could not complete — often because a surface restricts cross-origin browser requests. That is a statement about this dashboard's visibility, not about Upstage's health, so no verdict is issued.