# Upstage — Solar Pro 3

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## Model

- Name: Solar Pro 3
- Company: Upstage (upstage.ai)
- Launch post: not held by this record
- Announced: not stated
- Launch source: not stated
- Launch chosen by: not stated
- Released (per models.dev): not stated
- Listed (per OpenRouter): 2026-01-27
- Open weights: not stated
- Posts about it: 1
- Outlets named under its posts: 0
- OpenRouter id: upstage/solar-pro-3 — https://openrouter.ai/upstage/solar-pro-3

## Posts about it

_Upstage's own posts whose title names Solar Pro 3, and its launch post, in the record's order: dated newest first, undated last. The record reads the newest 50 first-party posts mentioning the model, every company's together, so a model mentioned more often than that lists the newest of them._

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in this order before any others:

    Company · Announced · Category · Coverage · Announcement · Group · Source · Record

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reached no count of its own, never that nobody wrote about it.

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entry itself so it holds where the groups are headings and where they are not.
One of: `models`, `covered`, `announcements`, `routine`.

Anything after `Record` is held detail that only some announcements carry.

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

- Company: Upstage (upstage.ai)
- Announced: 2026-01-26
- Category: model-update
- Coverage: not counted
- Announcement: yes
- Group: models
- 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

Upstage released Solar Pro 3, an update to Solar Pro 2, with improved reasoning accuracy and instruction-following quality while maintaining the same API interface, throughput, and serving behavior. The model shows a 52% improvement in instruction-following (IFBench 55.78) and a 30% improvement in complex reasoning (Arena Hard v2 62.5) compared to Solar Pro 2. Solar Pro 3 is available via the Upstage Console API, yupp.ai, OpenRouter, and BizRouter, and is free until March 2, 2026.

## Who reported on it

_This record names no outlet that reported on these posts._

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Record: https://forck.live/models/solar-pro-3
Catalogue: https://forck.live/llms.txt
Current issue: https://forck.live/feed.md