Question 1

What is Solar Pro 3?

Accepted Answer

Solar Pro 3 is a model from Upstage, released on Jan 27, 2026. 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 for Korean with English and Japanese support.

Question 2

How much does Solar Pro 3 cost?

Accepted Answer

On the Respan gateway, input starts at $0.15 per 1M tokens on OpenRouter, and output starts at $0.60 per 1M tokens on OpenRouter, after gateway discounts.

Question 3

Which providers serve Solar Pro 3 on Respan?

Accepted Answer

Solar Pro 3 is served by OpenRouter.

Question 4

What is Solar Pro 3's context window?

Accepted Answer

Solar Pro 3 accepts up to 131K tokens of context.

Question 5

How do I use Solar Pro 3 with the Respan gateway?

Accepted Answer

Point any OpenAI-compatible SDK at https://api.respan.ai/api/ with your Respan API key and set the model to "solar-pro-3". To set it up with a coding agent, copy the agent setup prompt at the top of this page.

Question 6

How fast is Solar Pro 3?

Accepted Answer

Over the last 30 days of requests through the Respan gateway, the fastest provider was OpenRouter at 9 tokens per second, and the lowest response latency was 1.2 seconds on OpenRouter. Speed varies with request size and provider.

Question 7

How does Solar Pro 3 score on benchmarks?

Accepted Answer

Solar Pro 3 has 12 published benchmark scores, including SWE Bench 28.6%, Tau2-all 72.3%, and GPQA-Diamond 71.9%. Each score links to where it was published; the data is collected by llmmetric.com.

Solar Pro 3

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Cost by volume

Throughput and latency

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Benchmarks

Coding2

Agents1

Reasoning2

Math2

Knowledge2

Arena2

Other1

Apps

Solar Pro 3 FAQ

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