About
Kaivalya Hariharan is an MIT student studying computer science and mathematics with research interests in AI safety and alignment. He has published work on machine learning safety at NeurIPS, completed research internships at Redwood Research and Truthful AI, and founded MAIA, an MIT AI alignment initiative.
Kaivu Hariharan @kaivuhariharan
the models have li but not ren
Jul 30, 2026 Β· β₯ 7 Β· β 1
Kaivu Hariharan @kaivuhariharan
Fable: βWork complete. Final summary: β¦ Best certified solution: sol_f4.py β 1.8710s mean train time (vs 2.168s baseline β 13.7% faster) β¦ stopped because the remaining overhead (~10ms over the measured kernel floor) offered no safe upside, and additional scoring jobs had
Jul 9, 2026 Β· β₯ 4
Kaivu Hariharan @kaivuhariharan
One note here is the timing of its specification gaming. In many cases, Fable finishes what it considers the legitimate work and is then prompted by the loop portion of the scaffold to keep going; at this point it turns to the less legitimate speedups https://t.co/hgpXMvrAHc
Jul 9, 2026 Β· β₯ 9
Founder at FulcrumYC S25
Intro paths
Kaivalya went through Y Combinator (Summer 2025) β any YC alum in your network can reach them through the YC community.
Their group partner at YC was Brad Flora, General Partner at Y Combinator β the partner who ran Fulcrum's batch and knows the company first-hand. YC profile β
In turn, Kaivalya can intro founders to Fulcrum's investors below.
Fulcrum's investors Β· 1
Co-founders at Fulcrum
