Solar Pro by Upstage

Model family · Model APIs & inference · indexed, not reviewed

on OpenRouter

Not reviewed

No score, grade or rank. This listing is facts from OpenRouter and our own checks, and it stays out of the rankings until the panel reviews it.

How the index works

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...
What OpenRouter says about Solar Pro 4

Facts

Maker: Upstage
Models: 2 on OpenRouter
Newest: upstage/solar-pro4

From OpenRouter and our own checks. JSON · Markdown

Why it's listed

OpenRouter lists it, with prices from the providers that serve it.

Being indexed says nothing about quality, and nobody can pay for it. Is this yours? Ask for a review.

Models 2

Model	Released	Context	Input / 1M	Output / 1M	Supports
Solar Pro 4 `upstage/solar-pro4`	Aug 2026	524k	$0.09	$0.36	tools, structured output, reasoning, caching
Solar Pro 3 `upstage/solar-pro-3`	Jan 2026	131k	$0.15	$0.60	tools, structured output, reasoning, caching

Prices and limits as OpenRouter lists them, in dollars per million tokens; a provider's own price can differ.

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