Datastream Free Tier
Free
AlloyDB and Spanner sources to BigQuery · 100 GiB shared across eligible streams per billing account
Checked 30 Sep 2026
Plans and prices
Google Cloud Datastream pricing
Datastream backfill
$0.40 a month
First 500 GiB each month free · listed rate applies above 500 GiB · Iowa (us-central1) pricing
Checked 30 Sep 2026
Datastream CDC
$2 a month
0–2,500 GiB at listed rate · higher tiers have lower per-GiB rates · pricing beyond 10 TB: contact sales
Checked 30 Sep 2026