DEPLOYDatabase

Robot model

comma four

othercommercialby Comma AI

Aftermarket ADAS hardware device that runs OpenPilot open-source driver assistance software.

Track comma four
Manufacturer
Comma AI
Form factor
other
Maturity
commercial
Lifecycle
active
Deployments
1
Website
comma.ai ↗

Overview

Aftermarket ADAS hardware device that runs OpenPilot open-source driver assistance software. Supports 325+ car models and mounts on the windshield near the rearview mirror. Fourth generation of Comma AI hardware.

Verified vs. claimed

Maturity stage
commercial(Commercially deployed with revenue-generating operations.)
Sources on file
View all sources →

Key facts

Software

Runs openpilot, comma's open-source driver-assistance software.

Supported cars (company-stated)

Works with 325+ car models.

Miles logged (company-stated)

1B+ miles logged.

Setup time (company-stated)

About 15 minutes to install.

Hardware and price (company-stated)

$999; Snapdragon 845, 128 GB storage (about 10 hours of footage), 1.9 inch 300 PPI OLED; one-fifth the size of comma 3X with the same compute.

NHTSA PE26007 (regulator, Sep 2026)

Named in a preliminary evaluation opened Sep 21 2026 after crashes into stopped or slow vehicles: about 30,000 devices, 5 crashes, 3 deaths. Not a recall.

Data & sources

Government records

1

Web sources

2

3 sources backing this record.View all →

Pricing

No verified price is on record for comma four. Physical-AI systems are often sold through enterprise contracts or operated as a service rather than at a public list price.

How DEPLOY tracks pricing

Deployments (1)

Free to use on your site, with a link back to DEPLOY.

comma four on the deployment map

View the global map

Where comma four is verified operating. Explore the deployment map by place and type.

Free to use on your site, with a link back to DEPLOY.

Recent activity

Every change to this record is dated, sourced, and independently verified where marked.

Full change history →

Safety record

1 incident on record (1 moderate). Most recent: Oct 2016.

moderate
1

Most recent: Oct 2016

Only active incidents are counted. Retracted incidents are excluded from this summary but remain reachable at their canonical URLs.

Incidents affecting comma four (1)

Includes incidents linked directly to this model or to deployments of it. Retracted incidents are excluded from this view but remain reachable at their canonical URLs.

Sources (3)

  1. https://comma.ai/shop/comma-four
  2. https://static.nhtsa.gov/odi/inv/2026/INOA-PE26007-17274.pdf · 2026-09-21
  3. https://electrek.co/2026/09/24/comma-ai-openpilot-nhtsa-investigation-crashes/ · 2026-09-24

Common questions

What is comma four?
Aftermarket ADAS hardware device that runs OpenPilot open-source driver assistance software. Supports 325+ car models and mounts on the windshield near the rearview mirror. Fourth generation of Comma AI hardware.
How much does comma four cost?
comma four's price is not publicly disclosed. DEPLOY has no verified price on record for comma four from Comma AI. Physical-AI systems like this are often sold through enterprise contracts or operated as a service rather than at a public list price; check the manufacturer for the latest.
Is comma four actually deployed in the real world?
Yes. comma four is independently verified in real-world operation on the DEPLOY registry, confirmed at named deployment sites with primary sources: not a concept, render, or demo-only.
Who makes comma four?
comma four is made by Comma AI, based in San Diego, CA, USA, founded in 2015.
Where is comma four deployed?
1 verified deployment of comma four is on the DEPLOY registry, including at Global (worldwide).
Can you buy comma four?
comma four is in commercial deployment and is sold to operators; contact the manufacturer to buy, and see the pricing section for any recorded price.
What are alternatives to comma four?
On the DEPLOY registry, comparable other robots to comma four include Archer Midnight, Joby S4, ASML EUV TwinScan, 10Beauty Manicure System.
How does comma four compare to Archer Midnight?
comma four and Archer Midnight (Archer Aviation · 9 deployments) are both other robots on the DEPLOY registry. comma four has 1 verified deployment on record. Compare both records for specs, safety, deployments, and verified-vs-claimed autonomy.
Is comma four a top other?
On DEPLOY's intelligence score, which blends verified deployments, safety, adoption, media, and IP signals, comma four ranks in roughly the top 21% of other models tracked by the registry.
What is comma four's maturity stage?
comma four is at the commercial stage on the DEPLOY maturity ladder (research, prototype, pilot, commercial, production). Commercial stage means production-grade deployments are operating at named customer sites.
Is comma four safe?
comma four has 1 active incident on record in the DEPLOY registry. 1 incident on record (1 moderate). Most recent: Oct 2016. Retracted incidents are excluded from this count.
Methodology: Verified · 3 sources (1 primary) · last reviewed 2026-10-10

Verification posture

Verified

High confidence

Review state

Stable

Last reviewed 2026-10-10

Maturity + lifecycle

Maturity stage: commercial

Lifecycle: active

Architectural position

Cohort: other

Sources by quality tier

2
unclassified
Unclassified source
1
primary-regulatory-filing
Regulatory filing

The framework is documented at /methodology. Corrections at /corrections. Reviewer: DEPLOY editorial team.

Methodology surface for comma four.

Recent coverage

comma four in third-party press

NHTSA investigates comma.ai’s openpilot over 5 crashes that killed 3

Sep 24, 2026

Comma AI Delivers Hands-Free Driving to Fisker Ocean via openpilot Port

Jul 13, 2026