# comma.ai openpilot

34 Hacker News commenters recommended comma.ai openpilot and 10 criticized it, November 2025 to November 2026. It was recommended in 9 of 13 months. It meets the Hacker Approved badge rule.

**Verdict:** Open-source driver assistance that reduces fatigue on long drives and works hands-free on many cars. Common caveat: it does not reliably change lanes on its own.

## Why people recommend it

- Less fatigue on long drives (3 comments): "Drive a comma.ai equipped car over a long road trip or other advanced driving aid, and just feel how much less frazzled you are after driving for a few hours." ([source](https://news.ycombinator.com/item?id=50029413)) "reduces the monotonous mental load and frees up their brain to focus more on being aware of other drivers" ([source](https://news.ycombinator.com/item?id=46741841)) "It increases situational awareness while reducing fatigue" ([source](https://news.ycombinator.com/item?id=49630634))
- Open source and customizable (3 comments): "These sort of shenanigans for even basic lanekeeping makes a very strong case for more open source solutions" ([source](https://news.ycombinator.com/item?id=46737062)) "You can run stock, or any fork simply by providing the URL of the version you want to run." ([source](https://news.ycombinator.com/item?id=46741679)) "hardware that has no subscription and uses open source software" ([source](https://news.ycombinator.com/item?id=47765347))
- Safety-focused design and monitoring (3 comments): "yes there are firmware safety checks + CAN checksums" ([source](https://news.ycombinator.com/item?id=46745309)) "it's pretty well designed with safety in mind" ([source](https://news.ycombinator.com/item?id=46742317)) "Comma has best in class driver monitoring" ([source](https://news.ycombinator.com/item?id=46747985))
- Hands-free without wheel nags (2 comments): "Comma.ai lets you go completely hands free with no wheel nags." ([source](https://news.ycombinator.com/item?id=46741798)) "You can go hands off for long periods." ([source](https://news.ycombinator.com/item?id=46741095))

## What people warn about

- Unsafe or illegal to use (3 comments): "Incredibly dangerous, irresponsible, and illegal to be using this around other people." ([source](https://news.ycombinator.com/item?id=46744824)) "Anyone using this in Washington is breaking the law, IMO" ([source](https://news.ycombinator.com/item?id=46747116)) "It's terrible. How is this allowed on the roads?" ([source](https://news.ycombinator.com/item?id=46744684))
- Limited speeds and features (2 comments): "Comma already does well with the car's built-in radar + vision on straight freeway runs, but can't reliably change lanes on its own." ([source](https://news.ycombinator.com/item?id=47124813)) "there are limitations like: above 32mph, cannot resume from stop" ([source](https://news.ycombinator.com/item?id=46238289))
- Lacks independent safety validation (2 comments): "Some basic quality assurance on the website would help me trust the quality assurance applied to their product offering." ([source](https://news.ycombinator.com/item?id=46740633)) "is every change validated by a safety agency? No." ([source](https://news.ycombinator.com/item?id=46745527))

## Alternatives hackers recommend

- [Tesla Full Self-Driving (FSD)](https://hackerapproved.com/p/tesla-full-self-driving.md): 268 recommend
- [Tesla FSD](https://hackerapproved.com/p/tesla-fsd.md): 73 recommend
- [Tesla Autopilot](https://hackerapproved.com/p/tesla-autopilot.md): 27 recommend
- [comma.ai comma device](https://hackerapproved.com/p/comma-ai.md): 24 recommend
- [Comma Four](https://hackerapproved.com/p/comma-four.md): 12 recommend

## Cite as

Hacker Approved, "comma.ai openpilot", https://hackerapproved.com/p/openpilot/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).