SpaceXAI, the combination of xAI and SpaceX, held a 12-hour hackathon, Grokathon 2026, in San Francisco on August 8. 220 people took part.
Participants got access to the latest Grok models and the X API and had to build something that actually worked. The prizes were not cash but an invitation to watch a Starship launch in Texas, plus jackets and stickers.
The Winner Is "an AI That Reads Binaries"
SpaceXAI announced the winner on its official X account at 6:33 a.m. KST on August 14.
First-place team "Nova" trained Grok to reverse-engineer binary code into clean C code. The team has three members: @theoc____, @supratikp07, and @henryzhangumich.
It started with a 262 KB Game Boy ROM file. In 12 hours, they went as far as rebuilding the runtime of a 1995 car's ECU (engine control unit).
12 Hours of Reverse Engineering, Powered by a Verification Loop
Binary reverse engineering normally takes a skilled engineer days of work. Turning assembly code back into a high-level language a person can read is itself labor-intensive.
The fact that an AI agent did much of that work offers a lead for maintaining legacy embedded systems and restoring old hardware.
Other Winners
| Place | Project | What it does |
|---|---|---|
| 1st | Nova | Reverse-engineers a Game Boy ROM into a car ECU runtime |
| 2nd | Signal | Builds a graph from followers' posts and engagement data to simulate reactions to a post |
| 3rd | ThinkVoice | Uses Grok Voice and brain-signal detection to hold a conversation without moving your mouth |
Grokathon Results Are Self-Reported
This was confirmed from the announcement and attached video on the official SpaceXAI account. However, for the following there is no third-party verification beyond SpaceXAI's own announcement.
- There is no separate benchmark or released code yet showing whether the rebuilt ECU runtime actually worked in that vehicle.
- The winning team's affiliation (individual participants or a specific company) has not been officially stated.
If your team handles legacy systems with AI coding agents, it's worth watching for follow-up technical posts on the SpaceXAI account.