# comma four: Comma AI autonomous vehicle

Canonical ID: `8b7ee813-b5c7-45e9-9d73-aae72bbc520e`

- **Slug:** comma-four
- **Form factor:** av ([Robotaxis](/robotaxis))
- **Maturity stage:** commercial
- **Lifecycle:** active
- **Deployments registered:** 0

## Deployments

_No deployments registered for this model._

## Supply chain

_No verified supply relationships on file. Supply-chain coverage is being added across the registry; check back as the seed populates this model's suppliers._

_Suppliers appear when verified with at least two strong sources. Sources are append-only; corrections add new sources rather than rewrite history._

## 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?

comma four is recorded at the commercial stage, but DEPLOY has no deployment verified at a named site yet; vendor deployment claims are not independently confirmed here. Manufacturer capability claims should be read as claims pending independent verification.

### Who makes comma four?

comma four is made by Comma AI, based in San Diego, CA, USA, founded in 2015.

### 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 av robots to comma four include Waymo Driver (6th gen), Ojai, Zoox Robotaxi, Tesla Robotaxi (Model Y ADS).

### How does comma four compare to Waymo Driver (6th gen)?

comma four and Waymo Driver (6th gen) (Waymo · 24 deployments) are both av robots on the DEPLOY registry. comma four has 0 verified deployments on record. Compare both records for specs, safety, deployments, and verified-vs-claimed autonomy.

### 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.

### Where is comma four deployed?

No verified deployments of comma four are currently on the DEPLOY registry. DEPLOY records deployments only when verified at a named site with a primary source; absence may reflect pre-deployment, research, or manufacturer-internal use.


## Sources (1)

1. https://comma.ai/shop/comma-four

## The verified answers

- [Which robots are deployed in the most cities](/which-robots-are-deployed-in-the-most-cities.md)
- [Which types of robots are deployed the most](/which-types-of-robots-are-deployed-the-most.md)

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