Solar Pro 3
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.
Specifications
| Lab | Upstage |
|---|---|
| Context window | 131.1K tokens |
| Input price | $0.15/1M |
| Output price | $0.60/1M |
| Release | Jan 2026 |
Strengths
- 102B total parameters with 12B active (MoE architecture)
- Strong general intelligence at budget pricing ($0.15/$0.60 per 1M tokens)
- 128K context window for long-document processing
- Efficient compute via mixture-of-experts design
- Competitive with models 5-10x the price
Weaknesses
- No reasoning/thinking mode for complex logic chains
- Smaller active parameter count limits raw capability vs larger models
- Limited ecosystem and community compared to major labs
Best for
- Cost-sensitive production workloads
- General chat and content generation
- Document analysis and summarization
- Enterprise deployment at scale
In Depth: Solar Pro 3
Summary
Solar Pro 3 is an AI model from Upstage.
Released in Jan 2026. It currently appears in the Overall category on LMRank. It takes text input and produces text output, with a context window of 131.1K tokens. Input pricing is $0.15 per 1M tokens and output is $0.60 per 1M tokens on OpenRouter.