Fivetran vs Weld

Both move data from your sources into a cloud warehouse. Fivetran focuses on ingestion, with 700+ prebuilt connectors, and sells reverse ETL as a separate product, Fivetran Activations, formerly Census. Weld has 300+ connectors built in house and includes transformations, orchestration, lineage and reverse ETL in the same product. Fivetran bills each connection per monthly active row; Weld sells flat monthly tiers.

For most teams past the free plan, yes, because the pricing models differ. With 10 sources, 10 million rows a month, hourly syncs and 1 reverse ETL destination, Fivetran's Standard plan comes to about $5,200 a month and Weld to $1,199 on its Business tier. Fivetran meters each connection per row and bills reverse ETL on top; Weld's tier includes them. At very low volumes Fivetran's free plan can cost less than any paid tier.

Yes. Fivetran's free plan covers 500,000 monthly active rows for connections, 3,500 for activations and 5,000 model runs a month. Weld has no free plan; every Weld plan starts with a 14-day free trial, and paid plans start at $99 a month.

Not fully. Fivetran's Hybrid Deployment, on its Enterprise plan, runs an agent in your own network that processes the data, while configuration and scheduling stay in Fivetran's cloud. Weld runs as a managed cloud service only.

Fivetran sells reverse ETL as Activations, the former Census, which it acquired in 2025. Activations are billed on their own monthly active row meter, separate from connections. In Weld, reverse ETL is part of the same product and the same bill.

Yes, and our team does the work at no cost. Weld is reverse compatible with existing Fivetran destination schemas, so the dbt models, dashboards and reports built on top of them keep working. We recreate your connectors and transformations, run both stacks in parallel, and you cut over once the row counts and metrics reconcile.

No. Fivetran publishes 700+ connectors, Weld has 300+, all built and maintained in house. The count matters less than the coverage, so the practical check is whether the sources you replicate today are on the list. If one is missing you can build it against any API with Weld's custom connector support.

Teams replacing Fivetran most often compare it with Weld, Airbyte, Stitch, Matillion and Rivery. Weld fits teams that want ingestion, transformations, orchestration and reverse ETL in one product on a flat monthly tier; each of the others has its own comparison against Weld, linked on this page.