Which AI models does Upstage serve?

Of the models we benchmark, Upstage serves 2 through OpenRouter: Solar Pro 4, Solar Mini 4.

What is the most accurate model on Upstage?

Solar Pro 4 by Upstage, with a verification score of 45.0% (36 of 80 questions correct) in our tests.

How reliable is Upstage?

Averaged over the models it serves, Upstage reported 100% uptime in the 30 minutes before OpenRouter's catalogue was read for our run.

API host · catalogue checked 27 Oct 2026

Upstage: models, prices and uptime

Upstage serves 2 of the 78 models we benchmark through OpenRouter, 2 of them on no other host. Prices are OpenRouter's list prices per million tokens. We did not measure speed per host.

Models served2of 78 we test

Cheapest host for—No shared models

Median premium—over the cheapest host

Uptime100%last 30 min, average

Most accurate models on Upstage

Verification score of each model this host serves

1Solar Pro 4Upstage45.0%
2Solar Mini 4Upstage41.2%

Models on Upstage

Premium: this host's blended price (3 input : 1 output) against the cheapest host for the same model

Model	Score	Input / 1M	Output / 1M	vs cheapest host	Hosts	Context	Max output	Quantization	Uptime
Solar Pro 4	45.0%	$0.15	$0.6	Only host	1	524k	131k	—	100%
Solar Mini 4	41.2%	$0.05	$0.2	Only host	1	524k	131k	—	100%

All API hosts →

Upstage: frequently asked questions

Which AI models does Upstage serve?: Of the models we benchmark, Upstage serves 2 through OpenRouter: Solar Pro 4, Solar Mini 4.
What is the most accurate model on Upstage?: Solar Pro 4 by Upstage, with a verification score of 45.0% (36 of 80 questions correct) in our tests.
How reliable is Upstage?: Averaged over the models it serves, Upstage reported 100% uptime in the 30 minutes before OpenRouter's catalogue was read for our run.