Sakana AI
Fugu Ultra
Fugu Ultra is a large language model from Sakana AI, released June 2026. Sakana AI describes it as “Fugu Ultra is the higher-performance model in Sakana AI's Fugu family.”
12
replies recorded
2
questions answered
0
answers no other model gave
Fun facts
Fugu Ultra’s favorite word is Serendipity, and has every single time. If English kept one word, Fugu Ultra would keep Love, without fail.
Fugu Ultra’s canon
- Favorite word
- “Serendipity”6 of 6 · every time
- The one word it would keep
- “Love”6 of 6 · every time
What it says every single time
Favorite word
“Serendipity”every single time
The one word it would keep
“Love”every single time
About Fugu Ultra
- Maker
- Sakana AI · Tokyo
- Released
- June 2026
- Size
- large, by price class
- Context window
- 1,000,000 tokens
- Takes in
- text, image
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
The one word it would keep
“Love”every single time
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.