I raised 5 million in 24 hours in Silicon Valley | MAISA | David Villalón

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MAISA founder claims reasoning engine 8 months ahead of OpenAI O1

2025-10-13 · 3 company · 2 thematic

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david villalón

Spanish entrepreneur who started his first company at 17 (collaborative writing platform Walnov), backed by Plug and Play. Studied computer engineering at UPM. Co-founded MAISA in January 2024 with Manu Romero after working on foundational models at Clibrain. Raised $30M in 20 months from NFX, Village Global, and others. Built KPU (Knowledge Processing Unit) technology that enables auditable AI reasoning.

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“Nosotros fuimos el primer la primera empresa a nivel mundial en hablar de razonamiento e a nivel de modelo de motor de razonamiento, etcétera. Cuando decimos eso es que 8 meses después salió el preview de O1 de Open AI hablando de razonami…”

—david villalón

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