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Solar Pro 3

UpstageProprietaryPending Human Review

Solar Pro 3 is Upstage’s hosted enterprise language model focused on reasoning, instruction following, and Korean and English workflows. Its 102B sparse architecture activates 12B parameters. The January launch established public API access; a March update strengthened agentic tasks through SnapPO reinforcement learning while preserving the service interface. The two documented snapshots are grouped under this model identity. API and partner access support enterprise assistants, but the Pro checkpoint is not a public weight release.

2026-01-26
102B total, 12B active
Mixture of Experts
Proprietary

Specifications

Parameters
102B total, 12B active
Architecture
Mixture of Experts
License
Proprietary
Type
text
Modalities
text

Benchmark Scores

Advanced Specifications

Model Family
Solar
API Access
Available
Chat Interface
Available
Multilingual Support
Yes
Variants
solar-pro3-260127solar-pro3-260323

Capabilities & Limitations

Capabilities
reasoningtool usemultilingual generation
Known Limitations
Public weights are unavailableScores vary between January and March snapshotsAgent execution requires a harness
Notable Use Cases
Korean enterprise assistantsoffice workflowshosted agents

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