This is amazing example of a project I would have paid a lot of money to get completed a decade ago:
That project is a rebuild of the old Rebol 3 programming language interpreter (R3), with its 'View' GUI dialect, networking, file handing, graphics, and other features, for WASM, so that it runs entirely in a web browser
You can paste this line into the console at the link above, to see some little example apps run:
do http://com-pute.com/nick/demo.r3
That rebuilt interpreter was a tag team effort between Fable and Kimi K3, completed in a day. Deepseek V4 Pro did some good work during the process, but it couldn't keep up with the power of Fable and K3.
My girlfriend had a day of rate-limited Fable usage left on her $20/month Claude account, which would have otherwise gone to waste, so I uploaded the source code to my old Android version of R3 with View, and let it cook on building a version that runs entirely in the browser. What Fable produced, after hitting the rate limit a few times, was a language interpreter that mostly worked - but it was missing a lot of functionality.
I asked Fable for a source code package and a prompt to paste into Pi on one of my VPS accounts, to get it compiled and working. First shot, the interpreter generally worked in the browser, but none of the GUI examples ran.
So I let Deepseek V4 Pro hack at it for a while, and it actually did get some GUIs to display, but Deepseek just continually ran into lots of issues. So I switched Pi over to Kimi K3 before going to bed - and woke up to a functioning version of Rebol 3 with View running in the browser. This was a seriously impressive result.
I tested a few scripts from https://learnrebol.com/rebol3_book.html and quickly realized that networking calls (reading of data at HTTP URLs) weren't functioning correctly. Kimi K3 took less than a minute to get that worked out. Then I noticed alerts in the UI weren't working. K3 got them going with a prompt.
The most impressive thing about this build was how deeply Fable and Kimi K3 understood everything about R3 code, not just the compiled source code, but everything about the deep roots of the REBOL language, all the way up through not only Rebol code/data structures, but also dialects.
These models are not trained on much about Rebol, so there was an enormous amount of genuinely powerful reasoning and in-context learning going on during this process. Deepseek did an impressive job for what it costs, but it struggled for a while, and I got tired of waiting during Fable rate limits, so just sicked Kimi K3 on the remaining issues. Beyond the rate-limited use of Fable, which would have gone unused, the total cost to get this project up and running to the point where it stands now, was $3.88 - mostly for the Kimi K3 tokens on OpenRouter.
It was awesome to watch Fable and Kimi K3 work - they're both absolute beasts.
There are many more details about this project, along with all the downloadable files, session transcripts, etc., here: