The $10.5B post money round funds two structural bets: a Postgres scaling layer called Multigres, and the claim that the next primary database deployer is an AI agent, not a human engineer.
Seven months after its last round, Supabase has closed a $500 million Series F at a $10.5 billion post-money valuation — and used the announcement to make a more specific, and more falsifiable, claim: that the primary deployer of databases on its platform is no longer a human engineer.
"Our platform now has a different primary user," co-founder and CEO Paul Copplestone said, per the company's June 4 release distributed via PR Newswire. "Agents are now deploying the majority of databases on our platform."
That assertion — not the $10.5 billion price tag — is the substantive news in the release. The valuation is a process number; the agent-deployment claim is a thesis the company is now asking the market to test.
Bundled into the same announcement is Multigres, a project Supabase is positioning as a way to scale Postgres "for the largest workloads on the planet." According to the release, Multigres is being released as open source under Apache 2.0 and is built around horizontal scaling, sharding, zero-downtime migrations, and high availability.
The company is explicitly calling Multigres a "preview" — not a general-availability release — and gating access through a partner-program application at supabase.link/mg-partner. That framing matters: the Postgres-at-hyperscale claim is being made on the strength of a not-yet-production system.
The release backs the agent-deployment assertion with one other specific line: that Claude Code "has been the largest contributor to the platform since the start of 2026."
Neither claim is independently verified in the materials Supabase has put out. "Deploys the majority of databases" is not defined in the release — counted how, over what window, by what definition of "deploy." "Largest contributor" is similarly undefined: contributor to the open-source repo, to the platform, to the partner program, or to third-party integrations.
These are the two lines in the release most worth testing.
The $500 million Series F was led by GIC, with all existing investors — Accel, Y Combinator, Craft, Felicis, Peak XV, and Coatue — participating, according to the same release. Stripe made a second investment in the company; Salesforce Ventures joined the round as a new investor. Total capital raised now exceeds $1 billion, per the company.
The round came roughly seven months after Supabase's Series E.
Supabase's own metrics, as disclosed in the release:
These are company-disclosed figures, not independently audited. The release does not provide baseline definitions for the growth percentages.
The release leaves the most interesting questions open:
Until those are answered, the agent-deployment line is a thesis, not a fact — and, on the evidence in the release, arguably the more interesting number than the post-money valuation.