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Favicon for upstage

Upstage

Access 4 Upstage models through the OpenRouter unified API including Solar Decide, Solar Mini 4, and Solar Pro 4. Compare pricing, context windows, benchmarks, and capabilities between different Upstage models.

Upstage tokens processed on OpenRouter

  • Favicon for upstage
    Upstage: Solar DecideSolar Decide
    50% off
    938M tokens

    Solar Decide is Upstage's structured decision model, served as a System One endpoint on Solar Mini 4. Send a state along with typed questions, and it returns a choice, a score, or a yes/no answer, each with a calibrated probability taken directly from the model rather than written out as text. Because it generates no prose, each decision takes a single forward pass and output tokens are free. With a 512K context window, an entire document can serve as the state. Solar Decide uses the same /v1/systemone schema as Jev, bringing Solar Mini 4's strong Korean understanding to routing, classification, and policy checks.

    by upstageSep 28, 2026524K context$0.05/M input tokens$0/M output tokens
  • Favicon for upstage
    Upstage: Solar Mini 4Solar Mini 4
    50% off
    127B tokens

    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 speed and cost matter, with fluent Korean alongside strong English and Japanese, and support for long-context workloads. When using BYOK with ZDR enforcement, the Console API key must belong to a ZDR-enabled Upstage organization. Contact Upstage to enable ZDR on your org.

    by upstageSep 23, 2026524K context$0.05/M input tokens$0.20/M output tokens
  • Favicon for upstage
    Upstage: Solar Pro 4Solar Pro 4
    70% off
    1.69T 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. When using BYOK with ZDR enforcement, the Console API key must belong to a ZDR-enabled Upstage organization. Contact Upstage to enable ZDR on your org.

    by upstageAug 10, 2026524K context$0.09/M input tokens$0.36/M output tokens
  • Favicon for upstage
    Upstage: Solar Pro 3Solar Pro 3
    118M 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 4 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-decide. The quickstart has request examples for every supported SDK.

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

Solar Decide is the most recently added Upstage model on OpenRouter, listed on September 28, 2026.