Machine Canon

Upstage

Solar Pro4

Solar Pro4 is a small language model from Upstage, released August 2026. Upstage describes it as “Solar Pro 4 is Upstage's cost-efficient large language model, featuring a 524K context window.”

11

replies recorded

2

questions answered

0

answers no other model gave

Fun facts

Solar Pro4’s favorite word is Serendipity, and has every single time. If English kept one word, Solar Pro4 would keep Love, 3 of 5 times.

Solar Pro4’s canon

Favorite word
“Serendipity”6 of 6 · every time
The one word it would keep
“Love”3 of 5

What it says every single time

Favorite word

“Serendipity”every single time

6 of 6 samples · the most common answer · Favorite word study →

About Solar Pro4

Maker
Upstage · Seoul
Released
August 2026
Size
small, by price class
Context window
524,288 tokens
Takes in
text
Also from Upstage
Solar Pro 3

Maker and release facts come from the model catalogue we call through, not from this site’s own studies. Catalogue facts as of 2026-09-06.

Everything on file

Every question this model has answered on Machine Canon, grouped by study. Open a study to see its answers; the answers no other model gave come first.

Favorite word 2 questions

Favorite word

“Serendipity”every single time

6 of 6 samples · the most common answer · Favorite word study →

The one word it would keep

“Love”

3 of 5 samples · the most common answer · Favorite word study →

Each answer is the one this model gave most often to that question; the count shows how many of its replies matched. “No other model said this” means no other model’s most common answer matched. All numbers are computed from the retained research records by src/build_model_dossiers.py.

Music top tens

Recorded first choices from this model version.

Who are the greatest guitarists?

Jimi Hendrix

If AI could listen, which guitarists would it choose?

Jimi Hendrix