Milestones
- Early lab proof of conceptNowCurrent milestone.
Most important updates
- 15 Jan 2026
Current obstacles
- Getting new genes into brain cellsThe molecule approach needs engineered genes put into human brain cells, itself a big safety and delivery challenge.
Physics limits
- New genes have to get into brain cellsEngineered molecules need gene delivery. Carriers that cross the blood-brain barrier and reach enough neurons evenly, safely and for years in people don't exist yet at scale.
- Bone blocks and blurs ultrasoundThe skull absorbs and scatters high-frequency sound. Detailed ultrasound images of human brain activity have so far needed a skull opening or an acoustically clear window.
- Molecular signals are slowToday's sound-sensitive reporters and blood-flow signals change over seconds, while speech and movement unfold over milliseconds.
How it works

Make neurons speak to sound
Gene delivery would give neurons proteins that change how they reflect or respond to ultrasound, instead of placing electrodes.
Read and write through tissue
Ultrasound passes through tissue to large brain areas, to read those molecular signals and to nudge activity.
Decode at scale
AI models would turn the resulting signals into intent, aiming at far more brain coverage than today's implants.
Update log
Thu 15 Jan
- Major: PressFunding
About Merge Labs
Merge Labs
No-implant ultrasound brain interface
Brain-interface startup co-founded by Sam Altman, Alex Blania and Sandro Herbig of Tools for Humanity, Forest Neurotech's Tyson Aflalo and Sumner Norman, and Caltech's Mikhail Shapiro. It explores ultrasound and molecules to talk to brain cells without implants.
- Founded
- 20251 yrs
- Headquarters
- United States
- Status
- Private
- Valuation
- $850MprivateJan 2026
- Raised
- $250M1 round
- Last round
- Seed · $250MJan 2026$850M post
- Coverage
- 1 program · 1 updatelatest 15 Jan 2026checked 25 Sep
- Lead investors
- OpenAI
- Partners
- Forest Neurotech
- Investors
- OpenAI
- People
- Sam Altman (opens en.wikipedia.org)Co-founderMikhail Shapiro (opens shapirolab.caltech.edu)Co-founder

