Wafer now powers Brilliant's AI tutor Koji, ending speculative prefetching for latency

ycombinator · x · 2026-09-25

Wafer's founder shares that Brilliant's AI tutor Koji needs to respond near-instantly as students work through math and coding problems. Before Wafer, Brilliant had to speculatively prefetch AI-generated responses to hide latency; Wafer's inference stack now serves the tutor. A personal twist: the founder grew up in Mexico relying on Brilliant's logic courses to get into a top US university.

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