
Dong Ming
3.3K posts

Dong Ming
@dming
Engineer turned full-time investor. Ex- $AXON $MSFT $AMD @UWaterloo 🇨🇦🇺🇸




We studied $UBER and while there is value in the network, ultimately couldn't see how they thrive in an AV world where suppliers get increasingly consolidated and Uber does not own the core technologies Please tell me why I'm wrong.


Composer 2 is now available in Cursor.

I’m excited to announce a partnership with @Uber. As part of this, Uber plans to invest up to $1.25 billion in Rivian and deploy up to 50,000 R2 robotaxis. This partnership accelerates our path to Level 4 autonomy and supports our goal of building one of the safest autonomous platforms in the world—across both shared and personally owned vehicles. The combination of Rivian’s rapidly growing data flywheel, our in-house RAP1 inference platform (800 TOPS), and our multi-modal perception stack provides a powerful foundation to scale autonomy quickly and responsibly over the next couple of years.




We've been building an internal Claude Code plugin system at Intercom with 13 plugins, 100+ skills, and hooks that turn Claude into a full-stack engineering platform. Lots done, more to do. Here's a thread of some highlights.


5.4-mini is roughly Sonnet 4.6 intelligence but 70% cheaper and like 3x faster


GPT-5.4 mini is available today in ChatGPT, Codex, and the API. Optimized for coding, computer use, multimodal understanding, and subagents. And it’s 2x faster than GPT-5 mini. openai.com/index/introduc…


We’re introducing GPT-5.4 mini and nano, our most capable small models yet. GPT-5.4 mini is more than 2x faster than GPT-5 mini. Optimized for coding, computer use, multimodal understanding, and subagents. For lighter-weight tasks, GPT-5.4 nano is our smallest and cheapest version of GPT-5.4. openai.com/index/introduc…

$UBER is now my top 3 position (up 2 ranks) after the market gave opportunities around 89-90 range over the last week. The thesis is simple - I bet vehicle autonomy is going to be commonplace in 5y with a highly competitive and fragmented market. Supply/demand for taxi also highly variable (see post below). As such, most AV companies are heavily incentivized to not have a large fleet to deal with peak demand and would benefit from an aggregator like Uber. Uber definitely benefits from trying to partner with as many as possible and thats exactly what they are doing. It would break my thesis if we see Waymo or other major AV players pull away from Uber to do their own thing exclusively. Of course, the one company that is least likely to join the Uber network is Tesla. That’s OK, multiple players can play at this game. Elon can go for his moonshot of 8T valuation, I’d be pretty happy with Uber at just 1T 🤑 $GOOGL $TSLA








