0x2026
Cosein
Cosein T1 - Self-improving agent computer for long-horizon work
Description
Description
Cosein T1 is a self-improving agent computer for long-horizon work. It combines a compact Linux computer, hardware KVM, and the Cosein Work Harness to give AI agents a physical interface to the computers and software people already use.
We’re building T1 for work that unfolds across many steps, applications, and sessions. The Work Harness is being developed to preserve task state, coordinate execution, and turn accumulated experience into reusable expertise: context and procedures that agents can carry into future tasks.
For AI-native individuals and small teams, our vision is a persistent AI teammate whose expertise grows with the work it does. T1 brings that vision into a dedicated device, with physical approval for sensitive actions as part of its interaction design.
Cosein T1 is a self-improving agent computer for long-horizon work. It combines a compact Linux computer, hardware KVM, and the Cosein Work Harness to give AI agents a physical interface to the computers and software people already use.
We’re building T1 for work that unfolds across many steps, applications, and sessions. The Work Harness is being developed to preserve task state, coordinate execution, and turn accumulated experience into reusable expertise: context and procedures that agents can carry into future tasks.
For AI-native individuals and small teams, our vision is a persistent AI teammate whose expertise grows with the work it does. T1 brings that vision into a dedicated device, with physical approval for sensitive actions as part of its interaction design.
Keywords
Keywords
Agent Computer
AI Hardware
Long-Horizon Agents
Industrial Design
Reusable Expertise
Year
Year
2026
2026
Technical Details
Technical Details
Embedded computing
A quad-core Linux computer with onboard RAM and support for up to 512 GB of storage, integrated into roughly a credit-card footprint.
Hardware KVM
Through its USB-C KVM interface, T1 receives a compatible host computer’s display output and sends standard keyboard and mouse input. The host recognizes the connection as an external display and USB input devices. This provides the observation and control interface for remote access and agent workflows.
Cosein Work Harness
The software layer under development for long-horizon task orchestration, persistent task state, and reusable expertise. The hardware supplies the observation and action interfaces; the harness is being built to preserve context and coordinate execution across the task.
Security and human control
The hardware includes a dedicated security chip. Physical approval for sensitive actions is part of the product’s interaction design.
Hardware–software co-design
The PCB, enclosure, and harness are iterated together, balancing integration, signal integrity, power, and thermal constraints. Functional hardware prototypes have been built through multiple PCB revisions, with second-generation prototypes nearing completion in Shenzhen.
Embedded computing
A quad-core Linux computer with onboard RAM and support for up to 512 GB of storage, integrated into roughly a credit-card footprint.
Hardware KVM
Through its USB-C KVM interface, T1 receives a compatible host computer’s display output and sends standard keyboard and mouse input. The host recognizes the connection as an external display and USB input devices. This provides the observation and control interface for remote access and agent workflows.
Cosein Work Harness
The software layer under development for long-horizon task orchestration, persistent task state, and reusable expertise. The hardware supplies the observation and action interfaces; the harness is being built to preserve context and coordinate execution across the task.
Security and human control
The hardware includes a dedicated security chip. Physical approval for sensitive actions is part of the product’s interaction design.
Hardware–software co-design
The PCB, enclosure, and harness are iterated together, balancing integration, signal integrity, power, and thermal constraints. Functional hardware prototypes have been built through multiple PCB revisions, with second-generation prototypes nearing completion in Shenzhen.
Highlights
Highlights
Long-horizon work — Designed for multi-step tasks across applications and sessions, with persistent context at the heart of the Work Harness.
Experience into expertise — A harness being developed to make useful task context and procedures reusable in future work.
Hardware access to existing computers — KVM connects display capture and keyboard/mouse control to remote access and agent workflows.
Custom hardware, iterated in Shenzhen — Functional prototypes developed through multiple PCB revisions; second-generation prototypes nearing completion.
Public showcases and next steps — Cosein has exhibited at BEYOND Expo in Macau and INCLUSION · Conference on the Bund in Shanghai. Early-user testing and a Kickstarter launch are the next milestones.
Long-horizon work — Designed for multi-step tasks across applications and sessions, with persistent context at the heart of the Work Harness.
Experience into expertise — A harness being developed to make useful task context and procedures reusable in future work.
Hardware access to existing computers — KVM connects display capture and keyboard/mouse control to remote access and agent workflows.
Custom hardware, iterated in Shenzhen — Functional prototypes developed through multiple PCB revisions; second-generation prototypes nearing completion.
Public showcases and next steps — Cosein has exhibited at BEYOND Expo in Macau and INCLUSION · Conference on the Bund in Shanghai. Early-user testing and a Kickstarter launch are the next milestones.
Credits
Yueze Zhang & the Cosein team
Appendix
Credits
Yueze Zhang & the Cosein team
Appendix
