# Upstage: Solar Pro 3 — Use via Hanzo AI API > Solar Pro 3 is Upstage's powerful Mixture-of-Experts (MoE) language model. With 102B total parameters and 12B active parameters per forward ... Access via Hanzo's OpenAI-compatible API. Context: 131K. Get started free. [Models](https://hanzo.ai/models)/[Upstage](https://hanzo.ai/models/upstage)/solar-pro-3 # Upstage: Solar Pro 3 [Upstage](https://hanzo.ai/models/upstage) 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... text [Get API Key](https://hanzo.ai/signup)[View Docs](https://docs.hanzo.ai)[Try in Chat](https://hanzo.ai/chat) ## Specifications Context Window 131K Modalities text Input $0.180 / M tokens Output $0.720 / M tokens Status available Category third-party Model ID upstage/solar-pro-3 ## Quick Start TypeScript ``` import OpenAI from 'openai' const client = new OpenAI({ apiKey: process.env.HANZO_API_KEY, baseURL: 'https://api.hanzo.ai/v1' }) const response = await client.chat.completions.create({ model: 'upstage/solar-pro-3', messages: [{ role: 'user', content: 'Hello!' }] }) console.log(response.choices[0].message.content) ``` Python ``` from openai import OpenAI client = OpenAI( api_key=os.environ["HANZO_API_KEY"], base_url="https://api.hanzo.ai/v1" ) response = client.chat.completions.create( model="upstage/solar-pro-3", messages=[{"role": "user", "content": "Hello!"}] ) print(response.choices[0].message.content) ``` cURL ``` curl https://api.hanzo.ai/v1/chat/completions \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $HANZO_API_KEY" \ -d '{ "model": "upstage/solar-pro-3", "messages": [{"role": "user", "content": "Hello!"}] }' ``` Go ``` package main import ( "context" "fmt" "os" "github.com/sashabaranov/go-openai" ) func main() { cfg := openai.DefaultConfig(os.Getenv("HANZO_API_KEY")) cfg.BaseURL = "https://api.hanzo.ai/v1" client := openai.NewClientWithConfig(cfg) resp, _ := client.CreateChatCompletion(context.Background(), openai.ChatCompletionRequest{ Model: "upstage/solar-pro-3", Messages: []openai.ChatCompletionMessage{ {Role: openai.ChatMessageRoleUser, Content: "Hello!"}, }, }, ) fmt.Println(resp.Choices[0].Message.Content) } ``` ## More from Upstage [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...](https://hanzo.ai/models/upstage/solar-pro4) [View all Upstage models →](https://hanzo.ai/models/upstage) ## Use Upstage: Solar Pro 3 via Hanzo AI One API key. Every major model. OpenAI-compatible. Start free. [Get Free API Key](https://hanzo.ai/signup)[Browse All Models](https://hanzo.ai/models)