Chuck Cook Says Tesla FSD V12.3 Is a Gamechanging Build

Chuck Cook is a supertester of Tesla FSD software. He has declared Tesla FSD V12.3 a gamechanging build.

Chuck Cook on a 40 minute drive had no problems with areas that have always caused issues for other versions. It handled double lights, his unprotected left turns etc…

It handled the unprotected left turn but there was a pause on partially committing turn.

Dave Lee rated it a 9.5. He was super impressed with it. It was a lot better v11. He was not expected it to be a lot better than v11 this early.

It is not robotaxi ready. He needs to do more drives. Dave is very excited with it getting more data and training to improve a lot this year.

He is optimistic. Dave summarized:

1.⁠ ⁠Wow! Overall, I’m super impressed. Ride quality is much more human-like than v11 with acceleration, braking and turning all much improved.
2.⁠ ⁠Smart decisions – overall, v12.3 made better and smarter decisions in challenging situations than v11. Several places where I know v11 would have difficulty, v12.3 handled with ease.
3.⁠ ⁠v12.3 handled speed bumps perfectly.
4.⁠ ⁠Lots of the quirks and hesitations of v11 are gone in v12.3.
5.⁠ ⁠Many of my rides today were flawless and exactly how a human would drive. v11 has a rigidity that is gone with v12.3.

Overall, I’m quite blown away by v12.3. I was expecting a version that was comparable to v11 – better in some ways and worse in other ways. But what I’ve experienced (so far) is a system that feels much more confident and capable than v11. v12.3 is far from perfect and there’s still a lot of work ahead for Tesla’s FSD team but the end-to-end neural net app.