Easily 5-10x or even more in certain special cases (when it'd take me a lot of upfront effort to get context on some problem domain). And it can do all the "P2"s that I'd realistically never get to. There was a day where I landed 7 small-to-medium-size pull requests before lunch.
There are also cases where it fails to do what I wanted, and then I just stop trying after a few iterations. But I've learned what to expect it to do well in and I am mostly calibrated now.
The biggest difference is that I can have agents working on 3-4 parallel tasks at any given point.
Not to downplay the issue you raise but I haven't noticed this.
Every iteration I make on the prompts only make the request more specified and narrow and it's always gotten me closer to my desired goal for the PR. (But I do just ditch the worse attempts at each iteration cycle)
Is it possible that reasoning models combined with the actual interaction with the real codebase makes this "prompt fragility" issue you speak of less common?
I work at OpenAI (not on Codex) and have used it successfully for multiple projects so far. Here's my flow:
- Always run more than one rollout of the same prompt -- they will turn out different
- Look through the parallel implementations, see which is best (even if it's not good enough), then figure out what changes to your prompt would have helped nudge towards the better solution.
- In addition, add new modifications to the prompt to resolve the parts that the model didn't do correctly.
- Repeat loop until the code is good enough.
If you do this and also split your work into smaller parallelizable chunks, you can find yourself spending a few hours only looping between prompt tuning and code review with massive projects implemented in a short period of time.
I've used this for "API munging" but also pretty deep Triton kernel code and it's been massive.
For those who are interested in getting involved with online math circles (as parents or potential instructors), check out https://theglobalmathcircle.org (Jeremy, the author of this post graduated from our training program)