Solar Mini 4 is Upstage's compact, cost-efficient language model, a 35B-parameter mixture-of-experts with 3B active parameters and a 524K context window. It is built for agentic use cases where response...
Specs
upstage/solar-pro-3How to use Solar Pro 3 in your app
The quickest way is through an API gateway such as OpenRouter, which uses the same format as the OpenAI API. Create a key, then send a request with the model ID upstage/solar-pro-3:
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More models from Upstage
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...
Questions about Solar Pro 3
What is Solar Pro 3?
Solar Pro 3 is Upstage's powerful Mixture-of-Experts (MoE) language model. With 102B total parameters and 12B active parameters per forward pass, it delivers exceptional performance while maintaining computational efficiency. Optimized...
How big is the context window of Solar Pro 3?
Solar Pro 3 can read up to 131,072 tokens in one request, roughly 98,304 words.
How much does Solar Pro 3 cost?
Through OpenRouter, Solar Pro 3 costs about $0.15 / 1M tokens for input and $0.60 / 1M tokens for output. Prices change, so check before large jobs.
Is Solar Pro 3 open source?
Solar Pro 3 does not have downloadable weights. You use it through Upstage or an API provider.
What can Solar Pro 3 take as input?
Solar Pro 3 accepts text and produces text.
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Specs and prices come from OpenRouter and the provider, and are refreshed daily. Last checked 27 Jan 2026.