Humansand Launches Ampersand, a Model Built for Human Collaboration, Available via API
gharik · x · 2026-10-21
Startup Humansand has unveiled Ampersand, billed as "the first model built for us" — a collaborator trained to help people achieve individual and collective goals, rather than a typical assistant.
Key points:
- The company claims that in multi-month simulations, users working with Ampersand accomplished more than with Fable and other frontier models
- Endorsed by researchers like Diyi Yang, who call AI-human collaboration a critical direction
- Available to everyone through the API
- Unlike assistant models trained with verifiable or preference rewards, Ampersand was trained to understand the long-term consequences of its actions through simulation feedback
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