# Upstage — Solar Pro 3: Better reasoning at production scale

- Company: Upstage (upstage.ai)
- Announced: 2026-01-26
- Category: not stated
- Coverage: not counted
- Announcement: yes
- Group: announcements
- Source: https://www.upstage.ai/blog/en/solar-pro-3-0127
- Record: https://forck.live/items/18456-solar-pro-3-better-reasoning-at-production-scale
- Subject: Solar Pro / Solar Mini

Looking for the Korean version? Read this post in Korean While Solar Pro 2 set the standard for production-ready LLMs with a focus on efficiency and stability suitable for enterprise deployment, Solar Pro 3 builds on that foundation by taking reasoning accuracy and instruction-following quality one step further. This release is not simply about increasing raw performance. Solar Pro 3 is designed to improve response quality while maintaining the same API interface, throughput, and serving behavior. Teams already using Solar Pro 2 can switch models without changing request formats, workflows, or system configurations—and immediately experience higher-quality responses under the same operating conditions. What’s changed from Solar Pro 2 Solar Pro 3 delivers meaningful performance improvements in areas closely tied to real user interactions, while maintaining similar throughput (TPS) and cost characteristics as Solar Pro 2. The model shows particularly strong gains in instruction-following capability with a 52% improvement (IFBench 55.78) and complex reasoning tasks with a 30% improvement (Arena Hard v2 62.5)—both critical areas that directly impact production quality. …

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Record: https://forck.live/items/18456-solar-pro-3-better-reasoning-at-production-scale
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