Upstage
1 model built · 1 served
Upstage is a South Korean lab, founded in 2020, best known for the Solar family of LLMs and its Document Parse technology. On OpenKey, the lineup is a single model: Solar Pro 3, released January 2026. That's a narrower bet than most labs on the platform, which suggests Upstage is optimizing for one well-tuned model rather than spreading across a full tier of flagship/mid/small variants. Solar Pro 3 is a text-to-text model with a 128K context window, priced at $0.15 per 1M input tokens and $0.60 per 1M output tokens — positioned as an affordable general-purpose option rather than a frontier-scale model.
Lineup
There's no lineup to navigate here — Upstage offers exactly one model on OpenKey, Solar Pro 3. At $0.15/1M input and $0.60/1M output tokens with a 128K context window, it's priced for everyday text tasks: summarization, drafting, general Q&A. On OpenKey that's $0.1545 input and $0.618 output per 1M tokens after the flat 3% fee ($0.15 × 1.03 and $0.60 × 1.03). If you need a free tier, multiple models, or vision/multimodal support, look at other labs on the platform — Upstage isn't the choice for that right now.
- Solar Pro 3Jan 27, 2026 128K $0.154 $0.618 ctx 128K · in $0.154 · out $0.618
Prices per 1M tokens, flat 3% fee included.
Models Upstage serves
Beyond its own models, Upstage hosts 1 model in the OpenKey catalog. Prices are Upstage’s own list price per 1M input tokens, before our fee.
| Model | Built by | Context | Input /M |
|---|---|---|---|
| Solar Pro 3 | Upstage | 128K | $0.150 |
From the OpenRouter catalog, Jul 28, 2026. All providers
Questions
- What does Upstage's Solar Pro 3 cost on OpenKey?
- Solar Pro 3 is $0.15 per 1M input tokens and $0.60 per 1M output tokens from Upstage directly. On OpenKey, that becomes $0.1545 input and $0.618 output per 1M tokens ($0.15 × 1.03 and $0.60 × 1.03) — the provider price plus the flat 3% fee, no markup games.
- Which Upstage model should I use?
- There's only one: Solar Pro 3. It's a text-to-text model with a 128K context window, released January 2026. Since Upstage doesn't offer a tiered lineup on OpenKey, there's no flagship-vs-cheap decision to make — Solar Pro 3 is both your budget option and your only option.
- Does Upstage offer any free models?
- No. Upstage has zero free models on OpenKey out of its one listed model, Solar Pro 3. If a free tier matters for your use case, check other labs on the platform — OpenKey lists 25 free models across its 52 labs total.