# Subconscious Systems Technologies

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/subconscious-systems-technologies

- Industry: Software
- Headquarters: Cambridge, US
- Website: www.subconscious.dev
- Latest round: Seed (Sep 22, 2026)
- Investors on record: 8

## About

Based in Cambridge, United States and founded in 2025 by Jack O’Brien (Co-Founder & CEO) and Hongyin Luo (Co-Founder & CTO), Subconscious Systems Technologies, Inc. doing business as Subconscious is an AI infrastructure company building an inference platform for long-running agents. Its system uses dynamic context compression and caching and is offered through a hosted API and enterprise cloud or on-premises deployments. In September 2026, Subconscious announced $5.1 million in funds raised across a pre-seed and seed from MassVentures, which led the rounds, with participation from Foothill Ventures, Underscore VC, E14 Fund, Oakseed Ventures, and the Agent Fund, among others.
The company will use the September 2026 funding to launch and expand its inference platform for long-running AI agents through hosted cloud and enterprise on-premises deployments. It also announced that it was growing the team alongside the managed-service launch.

## Funding rounds

- Seed, Sep 22, 2026 — MassVentures, E14 Fund, Underscore VC, Companyon Ventures, Foothill Ventures, Taihill Venture, Untapped Capital, Oakseed Ventures

## Investors

- MassVentures (https://capitalatlas.ai/funds/massventures) — Seed
- E14 Fund (https://capitalatlas.ai/funds/e14-fund) — Seed
- Underscore VC (https://capitalatlas.ai/funds/underscore-vc) — Seed
- Companyon Ventures (https://capitalatlas.ai/funds/companyon-ventures) — Seed
- Foothill Ventures (https://capitalatlas.ai/funds/foothill-ventures) — Seed
- Taihill Venture (https://capitalatlas.ai/funds/taihill-venture) — Seed
- Untapped Capital (https://capitalatlas.ai/funds/untapped-capital) — Seed
- Oakseed Ventures (https://capitalatlas.ai/funds/oakseed-ventures) — Seed