Solar Pro 4
language modelUpstage
Solar Pro 4 is Upstage's cost-efficient large language model, featuring a 524K context window. It is built for long-horizon tasks and agentic workflows, with strong capabilities in office productivity, document-intensive...
Key facts
| Made by | Upstage |
|---|---|
| Type | language model |
| Released | August 10, 2026 |
| Reads at once | 524,288 tokens |
| Price (API, per million tokens) | $0.15 in · $0.6 out |
| Input → output | text → text |
Questions about Solar Pro 4
Who makes Solar Pro 4?
Solar Pro 4 is made by Upstage.
When was Solar Pro 4 released?
We first saw Solar Pro 4 listed on August 10, 2026.
How much does Solar Pro 4 cost?
Through OpenRouter it costs $0.15 per million input tokens and $0.6 per million output tokens. Prices change, so check the provider before you build on it.
How much text can Solar Pro 4 read at once?
Up to 524,288 tokens, roughly 393.2K words.
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