LLM Reference

Solar Pro Models by Upstage

UpstageApache 2.0Open source
1 model2026Up to 200k ctxFrom $0.15/1M input

Last refreshed 2026-05-19. Next refresh: weekly.

Details

ResearcherUpstage
LicenseApache 2.0OSI-approved
Commercial useCommercial use: permitted
Models1
Released2026
Max context200k

Capabilities

JSON / Tool useAll models

About

The Upstage Solar Pro LLM, part of the Solar family of AI models, is a compact yet powerful language model designed to excel in fine-tuning tasks across various domains. Built on the Llama 2 architecture, Solar Pro leverages innovative techniques like Depth Up-Scaling (DUS) for improved scalability and performance without adding significant complexity. The model has demonstrated superior fine-tuning capabilities, consistently outperforming comparable open-source models on diverse tasks such as natural language understanding, reasoning, and code generation. Solar Pro integrates seamlessly with platforms like Amazon SageMaker JumpStart, offering pre-configured tools for easy deployment and customization. This integration enables developers to adapt the model for specific use cases, backed by components like Layout Analysis and Groundedness Check, which ensure reliable, contextually accurate outputs. These tools enhance the model’s ability to process and contextualize unstructured data effectively, minimizing risks like hallucination in generated responses.

Decision facts

Best fit
JSON / Tool usecodingstructured outputs
Capability starting point
Upstage Solar Pro 3 with 200k context and JSON / Tool use
Lowest tracked input
Upstage Solar Pro 3 · $0.15/1M · OpenRouter
Closest related family
Solar 0

Current Variants

Use-when guidance is based on each model's tracked capabilities, context window, release date, and replacement status.

1 in view

Use when the workload needs 200k context, 102B parameters, and JSON / Tool use.

2026-01200k context102B parametersJSON / Tool use

Release Timeline

1 release group
2026-01
1 current
Upstage Solar Pro 3
200k context102B parametersJSON / Tool use
Current

Specifications(1 models)

Solar Pro model specifications comparison
ModelReleasedContextParametersJSON / Tool use
Upstage Solar Pro 32026-01200k102BYes

Available From(1 provider)

Pricing

Solar Pro model pricing by provider
ModelProviderInput / 1MOutput / 1MType
Upstage Solar Pro 3OpenRouter$0.15$0.6Serverless