# Upstage Models via Hanzo AI — 2 models

> Access all 2 Upstage models through Hanzo's OpenAI-compatible API. Single API key, unified billing, no rate limit juggling.

[Models](https://hanzo.ai/models)/Upstage

# Upstage Models via Hanzo AI

2 models available

Access all 2 Upstage models through Hanzo's OpenAI-compatible API. Single API key, unified billing, no rate limit juggling.

[Get API Access](https://hanzo.ai/signup)[API Docs](https://docs.hanzo.ai)

[Upstage: Solar Pro 3131KSolar 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...text](https://hanzo.ai/models/upstage/solar-pro-3)[Upstage: Solar Pro 4524KSolar 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...text](https://hanzo.ai/models/upstage/solar-pro4)

## Use Upstage models via Hanzo

One API key. Unified billing. OpenAI-compatible. Works with every existing SDK.

[Start Free](https://hanzo.ai/signup)[Browse All Models](https://hanzo.ai/models)