Skip to content
  • Models
  • Rankings
  • Ori
Sign Up
Sign Up
OpenRouterOpenRouter
© 2026 OpenRouter, Inc

Product

  • Chat
  • Rankings
  • Benchmarks
  • Apps
  • Discover
  • Models
  • Collections
  • Providers
  • Pricing
  • Business
  • Enterprise
  • Labs

Company

  • About
  • Blog
  • Careers
    Hiring
  • Privacy
  • Terms of Service
  • Trust Center
  • Support
  • Works With OR
  • Data
  • Brand

Developer

  • Documentation
  • API Reference
  • Developer Platform
  • Status

Connect

  • Discord
  • GitHub
  • LinkedIn
  • X
  • YouTube
Favicon for upstage

upstage

Access 2 upstage models through the OpenRouter unified API including Solar Pro 4 and Solar Pro 3. Compare pricing, context windows, benchmarks, and capabilities between different upstage models.

upstage tokens processed on OpenRouter

  • Favicon for upstage
    Upstage: Solar Pro 4Solar Pro 4
    70% off
    1.84T tokens

    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 work, and coding.

    by upstageAug 10, 2026524K context$0.09/M input tokens$0.36/M output tokens
  • Favicon for upstage
    Upstage: Solar Pro 3Solar Pro 3
    89.3M tokens

    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.

    by upstageJan 27, 2026131K context$0.15/M input tokens$0.60/M output tokens

Frequently asked questions

OpenRouter serves 2 upstage models behind one OpenAI-compatible API. Create an OpenRouter API key, point your client at https://openrouter.ai/api/v1, and set the model to an ID such as upstage/solar-pro4. The quickstart has request examples for every supported SDK.

Solar Pro 4 has the largest context window of any upstage model on OpenRouter, accepting up to 524,288 tokens per request.

Solar Pro 4 is the most recently added upstage model on OpenRouter, listed on August 10, 2026.