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...
upstage/solar-pro4Solar Pro 4 is an API model from upstage, released on Aug 10, 2026, with a context window of 524,288 tokens, pricing of $0.15 per million input tokens and $0.6 per million output tokens. It accepts text input and produces text output.
At listed prices, a request with 10,000 input tokens and 1,000 output tokens costs about $0.0021.
Specs are sourced from OpenRouter and were last checked on Nov 3, 2026. Always confirm current pricing and limits with the provider before production use.
Solar Pro 4 supports a context window of 524,288 tokens.
Solar Pro 4 is listed at $0.15 per million input tokens and $0.6 per million output tokens on OpenRouter.
Solar Pro 4 was published on Aug 10, 2026.
Solar Pro 4 accepts text input and produces text output.