The best AI stack under $500/month

Under $500/month is enough to run a serious AI stack across the functions that matter most for a small business: customer support, content, outbound, and ops. The constraint forces discipline — you can't buy everything, so you buy the highest-leverage tool per function and skip the rest. The philosophy at this budget is to spend where AI replaces the most expensive human time (support deflection, content production, enrichment) and to self-host or use lower tiers where the marginal capability of the premium tier isn't worth it. The biggest mistake at this budget is spreading it thin across a dozen half-used subscriptions; the second biggest is blowing it on a single expensive platform that locks you in. The stack below is deliberately balanced: a support layer that deflects real volume, a content layer that produces at scale, an enrichment layer for outbound, and an automation layer for the glue — all within budget. As the business grows, the move is to deepen the function that's driving the most value rather than adding new tools. This is a starting stack, not a final one, and every pick is swappable as you learn what your business actually needs.