Windsor.ai vs Fivetran: pricing, data sources, and a side-by-side test in Snowflake

We connected both tools to the same Snowflake account. On 2 November 2026, we loaded the same five GA4 fields with both tools: sessions and engaged sessions by day, channel, and source. For Search Console, we compared Windsor.ai’s daily clicks with Fivetran’s prebuilt site report. Windsor.ai’s tasks were set up on 30 October and Fivetran’s on 2 November.

Each tool wrote to its own schemas and signed in as the same service user with a key pair. We compared 1 to 28 October 2026, the range of Windsor.ai’s task. Fivetran’s default is 12 months.

Windsor.ai ran on our Enterprise plan, and Fivetran on the free account trial it gives new accounts, which runs on its Business Critical plan. The plan does not change the data either tool loads. This was our first time using Fivetran, and we use Windsor.ai daily.

Test 1: Do the GA4 numbers match?

We added up sessions and engaged sessions for two weeks and worked out the bounce rate (the share of sessions that were not engaged) from each tool’s table.

For 14 to 20 October, each tool’s table held 58 rows with 1,093 sessions and a 78.59% bounce rate. For 21 to 27 October, each held 53 rows with 1,055 sessions and a 76.97% bounce rate.

Test 2: Joining Search Console and GA4 in SQL

We joined each tool’s Search Console clicks to its GA4 sessions from Google organic search, day by day, and flagged days where clicks and sessions differed by more than 20% of sessions.

With Fivetran filtered to web search, both tools returned the same clicks and sessions on every day from 1 to 28 October. Both flagged the same three days, 7, 11, and 20 October, with the same gaps, which shows both tools produce the same join.

Fivetran’s Search Console table splits each day by search type, country, and device. We had to filter to web search to match. Without that filter, image clicks raised the daily total by 1 on 6 of the 28 days. Windsor.ai’s task has no search type field, and its table matched web search clicks on all 28 days. In a separate query through the Windsor.ai connector, adding the search type field returned image clicks too (1 each on the same 6 days as Fivetran). We did not rerun the Snowflake task with that field.

Test 3: Setup, reload, and cost

We ran each load a second time, then checked for duplicate rows and worked out the cost.

• Snowflake connection: Fivetran saves the destination once, and every connection reuses it. We uploaded the key file for each Windsor.ai task.
• Default tables: Fivetran’s GA4 connection selected 50 prebuilt reports, 56 tables in all, and its Search Console connection selected 13. We kept one table on each, because each table you sync can add to your monthly active rows. Windsor.ai loaded only the fields we picked.
• Custom report: our GA4 report appeared in Fivetran’s table list after we refreshed the schema.
• First load: at its 12-month setting, Fivetran loaded all the site had, from March 2026: 1,060 GA4 rows and 11,074 Search Console rows. The successful initial syncs took 26 seconds (GA4) and 1 minute 13 seconds (Search Console), each after one automatic reschedule.
• Second run: neither tool created duplicates. Fivetran’s second sync updated 19 GA4 rows and 174 Search Console rows, and both row counts stayed the same. Windsor.ai reloaded its fixed range, and its row counts stayed at 208 and 28. Both tools still had one row per key when we counted.
• Run times: Windsor.ai’s second runs took about 8 seconds from Run now to the table load. Fivetran’s second syncs took 19 and 13 seconds. This is not a speed result, because the two clocks measure different things.
• Cost: initial syncs are free on Fivetran, and new connections get a 14-day free period. After that, a month like October (226 GA4 rows and 2,029 Search Console rows) would stay inside Fivetran’s Free plan. On Standard, it would cost about $11 to $12.50/mo, mostly the $5 base charge per connection. The higher figure allows for rows Fivetran fetches again from the previous month: its GA4 connection rolls back 30 days by default, and Fivetran counts those rows as new for the month. On Windsor.ai, the two sources fit in Basic at $19/mo billed annually ($23 billed monthly). For this small site, Fivetran costs less.

We did not time the setups. We also did not test Fivetran’s Agent Context MCP, because its Context Layer needs a destination in North America and ours is in the EU.

How G2 reviewers rate Windsor.ai and Fivetran

• Meets Requirements: Windsor.ai 8.8, Fivetran 8.6
• Ease of Use: Windsor.ai 8.2, Fivetran 9.0
• Ease of Setup: Windsor.ai 8.1, Fivetran 9.0
• Ease of Admin: Windsor.ai 8.6, Fivetran 8.8
• Quality of Support: Windsor.ai 8.9, Fivetran 8.5
• Good Partner in Doing Business: Windsor.ai 9.2, Fivetran 8.6
• Product Direction: Windsor.ai 9.2, Fivetran 8.3

Windsor.ai has 4.4 stars from 90 G2 reviews, and Fivetran has 4.3 from 855. G2 reviewers rate Fivetran higher for ease of use, setup, and admin, and Windsor.ai higher in the other four categories. Reviewers report a return on investment after 6 months with Windsor.ai and 12 months with Fivetran, from 12 and 53 responses. Reviewers of both tools report implementation in 1 month, from 16 and 67 responses.

See the G2 comparison of Fivetran and Windsor.ai

G2 comparison page, checked 2 November 2026.