Fluid compute is now the default for new projects
By Steven Van ·
Fluid compute reuses function instances to cut costs by up to 85% for high-concurrency workloads, and existing projects can opt in from the dashboard.
New Vercel projects now run on Fluid compute by default, as of April 23, 2025. Vercel says the change follows Fluid's general availability, its use in large-scale production apps, and all v0.dev deployments shipping with it enabled.
Fluid compute reuses existing function instances before starting new ones. Vercel says this cuts costs by up to 85% for high-concurrency workloads. Multiple invocations can share one instance on the Node.js and Python runtimes, and background work can continue after a response is sent using waitUntil.
Existing projects are not switched automatically. Fluid can be enabled from the project's Functions Settings in the dashboard, followed by a redeploy, or by setting "fluid": true in vercel.json for specific environments or deployments.
