Sakana AI builds Sakana Sawara LLM from scratch, first model planned for spring 2027
Overview
Sakana AI says it is training Sakana Sawara, a new large language model series built from scratch at its RSI Lab, starting with pretraining.
The first model, Sawara Small (provisional name), is planned for public release in spring 2027 if development stays on track, according to the company's English report and X post.
The plan was first presented at the October 26, 2026 Tokyo symposium, where CEO David Ha outlined three pillars: pretraining with AI agents, post-training with Sakana Namazu for Japanese and business use, and orchestration with Sakana Fugu. The company's earlier posts gave no timelines, availability or results for those pillars. The 2027 release target is conditional on development progressing as planned.
Written by AI from the articles below · updated Nov 2, 11:01 AM ET
Check the sources:
Developments
2 developments
- Nov 1, 8:57 PM ET · 2 articlesSakana AI holds symposium in Tokyo and announces Sakana Sawara LLM seriesSakana AI: Sakana AI plans its own language model series, Sawara Small, for spring 2027
- Oct 26, 9:29 AM ET · 1 articleSakana AI outlines three pillars for AI sovereignty and a new pretraining projectSakana AI: Sakana AI outlines three pillars for AI sovereignty and a new pretraining project
Article timeline
The articles in this story. Times are ET.
Sakana AI@SakanaAILabsOfficialSakana AI plans its own language model series, Sawara Small, for spring 2027AISakana AI says it is building a new language model series, Sakana Sawara (provisional name), from scratch, starting with pre-training. The first model, the small Sawara Small (provisional name), is planned for release in spring 2027 if development goes smoothly, as announced at a Tokyo symposium with more than 400 attendees.
hardmaru@hardmaruXSakana AI to build agent-native LLM Sakana Sawara from scratchAISakana AI says it is training Sakana Sawara, an agent-native large language model built from scratch, at its RSI Lab, following the Sakana AI Symposium in Tokyo. The post links to the company's English report, which says the first model, Sawara Small (provisional name), is planned for public release in spring 2027 if development stays on track.
Sakana AI@SakanaAILabsOfficialSakana AI hosts symposium on world models, Physical AI, and its Sawara language modelsAISakana AI held a symposium in Tokyo on October 26 with keynote speaker Jürgen Schmidhuber and a conversation with CEO David Ha, drawing over 400 attendees. Chief Scientific Advisor Takuya Akiba announced Sakana Sawara (provisional), the company's in-house language model series, starting with Sawara Small (provisional), planned for release in spring 2027.

Sakana AI@SakanaAILabsOfficialSakana AI outlines three pillars for AI sovereignty and a new pretraining projectAIAt its symposium, Sakana AI CEO David Ha outlined three pillars: pretraining with AI agents, post-training via Sakana Namazu to adapt LLMs to Japanese and business use, and orchestration via Sakana Fugu for frontier performance without relying on a single model.
Heat Trend
- Current comparable heat
- 16
- Peak comparable heat
- 16Nov 2, 12:00 PM ET
- Change in past 24 hours
- –
The trend compares only continuously observed participants, so its scope may be smaller than the current heat total. Hover or tap for hourly heat; use arrow keys with a keyboard.