Upstage: Solar Pro 3 (free)
Analysis Summary
Solar Pro 3 is Upstage's free-tier model with tool use and function calling support across a 128K context window. No benchmark data is available, making it impossible to assess reasoning, coding, or content quality relative to the broader model landscape.
For businesses, adopting a model without benchmark evidence carries meaningful risk for production workloads. The free pricing removes cost as a barrier for experimentation, and the tool use support suggests some agentic capability, but this cannot be verified from available data.
Teams curious about Upstage's offering should treat this as an experimental option only, validating it against specific tasks before any production commitment. Until benchmark data is published, stronger-evidenced alternatives are recommended for business-critical workflows.
Assessed June 6, 2026
Editorial notes
Solar Pro 3 from Upstage has no benchmark data available; tool use and function calling are supported, but capability cannot be assessed against the broader field.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
How Upstage: Solar Pro 3 (free) compares
Its 128K-token context window is larger than 43% of the models we list. Upstage: Solar Pro 3 (free) is currently free to use via OpenRouter.
About Upstage: Solar Pro 3 (free)
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.
Capabilities
How does Upstage: Solar Pro 3 (free) stack up?
Compare side-by-side with other legacy models.
Model Information
| OpenRouter ID |
upstage/solar-pro-3:free
|
| Provider | upstage |
| Release Date | January 27, 2026 |
| Context Length | 128,000 tokens |
| Status | Active |
Leaderboard Categories
External Resources
Frequently asked questions about Upstage: Solar Pro 3 (free)
How much does Upstage: Solar Pro 3 (free) cost?
Upstage: Solar Pro 3 (free) is currently available for free via OpenRouter.
What is the context window of Upstage: Solar Pro 3 (free)?
Upstage: Solar Pro 3 (free) has a context window of 128,000 tokens (128K).
What can Upstage: Solar Pro 3 (free) do?
Upstage: Solar Pro 3 (free) supports tool use and function calling.
Who created Upstage: Solar Pro 3 (free)?
Upstage: Solar Pro 3 (free) is developed by Upstage and was released on January 27, 2026.
