Supabase, the open-source database platform that has become a favorite among developers building AI applications, announced this week it raised $150 million in fresh funding led by GIC. The round, which drew participation from CapitalG, IronArc and Square Peg, landed just four months after the company closed a $500 million Series F round in June. Alongside the capital raise, Supabase said it is acquiring Turso, a SQLite-based infrastructure startup, in a deal structured to help developers deploy what both companies describe as "one database per agent" architecture.
The rapid-fire fundraising pace signals how aggressively Supabase is positioning itself in the emerging market for agent infrastructure. Its Series F round in June valued the company at $10 billion pre-money, or $10.5 billion post-money, according to PR Newswire. In a LinkedIn post this week, CEO Paul Copplestone disclosed that Supabase is now adding more than a million users and nearly five million databases every month. Around 70 percent of those new databases, he wrote, are being created by agents or AI-driven tools rather than human developers.
That shift in usage represents a fundamental change in how databases get deployed. Supabase built its business as an open-source Postgres development platform bundling database, authentication, storage, edge functions and real-time capabilities into a single package. Y Combinator backed the company in its Summer 2020 batch. Since then it has grown to serve nearly 10 million developers, according to a June blog post. The startup competes with Firebase, MongoDB and other backend-as-a-service platforms, but distinguishes itself as the open alternative built on Postgres rather than proprietary technology.
The Turso acquisition brings a different architectural approach into the fold. Turso rebuilt SQLite in Rust and created a cloud platform where a single server can manage millions of databases, loading them on demand and suspending them when idle, according to Supabase's announcement. That contrasts sharply with Supabase's traditional model of provisioning dedicated Postgres instances for each project.
Turso's customer base includes Superhuman, Sauna.ai, CTO.new and Mastra. The company will continue operating as a distinct platform, with Supabase building around Postgres while Turso focuses on SQLite. Glauber Costa, Turso's CEO and a former Linux kernel contributor who also worked as a staff engineer at Datadog, will join Supabase as head of agentic services. Co-founder Pekka Enberg, another Linux kernel veteran, is joining with the team.
"From the start of our journey, I've had as a goal to serve upwards of a billion databases to our customers," Costa said in a statement. "Being a part of Supabase, with its gargantuan developer success and ever-growing partner ecosystem will bring this goal closer."
Supabase has raised $1.06 billion in total funding, according to company disclosures. The fundraising tempo has picked up considerably in recent quarters. GIC led both the June Series F and an earlier growth round. CapitalG, the independent growth fund backed by Alphabet, joined in the latest investment.
"Supabase has established itself as the critical open infrastructure layer powering the AI revolution," CapitalG general partner Derek Zanutto said in a statement. "We're proud to back one of the fastest growing private database companies on the planet as Paul and the team empower millions of developers and agents to build at unprecedented speed."
Database launches on the Supabase platform grew 600 percent year-over-year as of June, with more than 60 percent of new databases launched by some form of AI tool, the company said. On the same day it announced the Turso acquisition and new funding, Supabase also unveiled a private alpha for Supabase Compute, a service designed for long-running agents and services, according to a product blog post.
"The future is agents and the architecture Turso provides will help us accelerate Supabase as the backend platform for supporting that future," Copplestone said in the funding announcement.
The company declined to disclose a valuation for the latest round or financial terms of the Turso acquisition. Whether the torrid pace of fundraising reflects genuine customer traction or the kind of exuberance that tends to grip investors during infrastructure buildouts remains to be seen. For now, at least, Supabase appears intent on capturing as much of the agent economy as it can while the window stays open.
