Onext is a Spanish AI consultancy based in Barcelona, specializing in context engineering for enterprise AI. Founded in 2024, the company partners with startups and mid-sized firms, collaborating closely with product and technology teams to help models, agents, and copilots deeply understand business context, data, and workflows, ensuring predictable production costs. Distinct from competitors, Onext focuses not on building models but on how AI solutions effectively address clients' real problems. Their approach integrates domain modeling, data architecture, agent memory, evaluation, and operations to transform pilots into reliable systems. A senior, stable, and vendor-agnostic team, Onext offers transformation programs, corporate AI environments, and tailored consulting, consistently delivering measurable improvements such as sevenfold speed increases and 50% faster time-to-production across multiple teams.