Startup Mostik bridges models in latent space, tops ARC-AGI 3 leaderboard
emilahlback · x · 2026-09-06
WIRED reports on Mostik, a startup of 12 PhDs, whose protocol lets models communicate directly in latent space: hidden states flow from a frontier model into a smaller one on your own infrastructure, with no text in between.
Key points:
- The team argues the real question isn't whether open models catch up to frontier ones, but why a frontier model must generate the answer at all when only the reasoning is needed.
- Using this approach, their model has taken first place on the notoriously hard ARC-AGI 3 competition (details withheld while the contest runs), and they demoed a bridge between two Claude models.
- Chief scientist Stanislav Smirnov, a Fields Medalist at the University of Geneva, says an appropriate mathematical language for this model-to-model communication doesn't exist yet, and deeper analysis may reveal commonalities between how AI models and humans reason.
Related event: Startup Mostik Tops ARC-AGI 3 with Latent-Space Model Bridge(3 posts)→
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