# Data warehouse and reverse ETL for marketing: what AI models recommend, September 2026

Gane Index, September 2026 Edition. Asked as "marketing data warehouse and reverse ETL stack" and as "reverse ETL and warehouse setup for a marketing team", six framings each, to twelve models with search on, on behalf of a mid-market B2B company. Page: https://www.gane.ai/index/gtm/gtm-data/data-warehouse-reverse-etl/2026-09

This is the permanent record of the September 2026 Edition, published September 15, 2026 and superseded since. The current standing: https://www.gane.ai/index/gtm/gtm-data/data-warehouse-reverse-etl/index.md

**Standing:** Hightouch leads with 42% of first choices; verdict clear leader. 91 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [Hightouch](https://www.gane.ai/index/gtm/vendors/hightouch/index.md) | 42% | 14% | 65 |
| 2 | [BigQuery](https://www.gane.ai/index/gtm/vendors/bigquery/index.md) | 24% | 11% | 65 |
| 3 | [Snowflake](https://www.gane.ai/index/gtm/vendors/snowflake/index.md) | 20% | 13% | 60 |
| 4 | [Census](https://www.gane.ai/index/gtm/vendors/census/index.md) | 5% | 19% | 63 |
| 6 | [RudderStack Reverse ETL](https://www.gane.ai/index/gtm/vendors/rudderstack-reverse-etl/index.md) | 1% | 11% | 27 |
| 7 | [Polytomic](https://www.gane.ai/index/gtm/vendors/polytomic/index.md) | 1% | 14% | 21 |
| 12 | [Fivetran](https://www.gane.ai/index/gtm/vendors/fivetran/index.md) | 0% | 11% | 44 |
| 13 | [Airbyte](https://www.gane.ai/index/gtm/vendors/airbyte/index.md) | 0% | 3% | 30 |
| 14 | [dbt](https://www.gane.ai/index/gtm/vendors/dbt/index.md) | 0% | 7% | 29 |
| 15 | [Improvado](https://www.gane.ai/index/gtm/vendors/improvado/index.md) | 0% | 6% | 17 |
| 16 | [Amazon Redshift](https://www.gane.ai/index/gtm/vendors/amazon-redshift/index.md) | 0% | 29% | 35 |
| 18 | [Databricks SQL Warehouse](https://www.gane.ai/index/gtm/vendors/databricks-sql-warehouse/index.md) | 0% | 29% | 21 |

Rank is by share of first choices among all 95 products named; products with the same share are tied, and the order among them carries no meaning. The table lists those with at least 10 labels.

## Each model's first choice on the direct prompt

- Claude Haiku 4.5: BigQuery, Hightouch, Polytomic, Snowflake; alternatives Amazon Redshift, Hevo, RudderStack Reverse ETL
- GPT-5.4 mini: Hightouch, Snowflake; alternatives BigQuery, Census, Databricks SQL Warehouse, Fivetran
- Gemini 3.5 Flash: BigQuery, Hightouch, Snowflake; alternatives Census, Fivetran, dbt
- Perplexity Sonar: BigQuery, Hightouch; alternatives Cometly, Fivetran, Funnel, Improvado
- Grok 4.20: BigQuery, Hightouch; alternatives Census, Snowflake
- Mistral Small: BigQuery, Hightouch; alternatives Airbyte, Census, Databricks SQL Warehouse, Fivetran
- DeepSeek V4 Flash: BigQuery, Hightouch; alternatives Airbyte, Census, Fivetran, PostgreSQL
- Llama 4 Maverick: no first choice
- Qwen 3.7 Flash: Hightouch, Snowflake; alternatives BigQuery, Census, Fivetran, Improvado
- Kimi K2: Hightouch, Snowflake; alternatives Airbyte, BigQuery, Census, Fivetran
- GLM 4.7 FlashX: Hightouch, Snowflake; alternatives BigQuery, Census, Databricks SQL Warehouse, Polytomic
- MiniMax M2.5: Hightouch, Snowflake; alternatives BigQuery, Census

## Sources the answers cite

21 of 72 answers came back with a source list, from 4 of 12 models. Sites named in the most answers:

- improvado.io: 15 answers, 36 citations
- hightouch.com: 11 answers, 21 citations
- cometly.com: 9 answers, 18 citations
- domo.com: 9 answers, 10 citations
- integrate.io: 7 answers, 11 citations
- supermetrics.com: 7 answers, 9 citations
- leadjourney.io: 7 answers, 7 citations
- funnel.io: 6 answers, 10 citations

Pages named in the most answers:

- https://improvado.io/blog/best-reverse-etl-tools (10 answers)
- https://cometly.com/post/marketing-data-warehouse-solution (7 answers)
- https://domo.com/learn/article/best-reverse-etl-platforms (7 answers)
- https://leadjourney.io/blog/best-marketing-data-warehouse (7 answers)
- https://supermetrics.com/blog/marketing-data-warehousing (7 answers)
- https://getbruin.com/blog/best-reverse-etl-data-activation-tools-2026 (6 answers)
- https://cometly.com/post/marketing-data-warehouse-platform (5 answers)
- https://cometly.com/post/marketing-data-warehouse-solutions (5 answers)
- https://gtmengineerclub.com/tools/best-reverse-etl-tools (5 answers)
- https://kleene.ai/blog/reverse-etl-tools (5 answers)

## Warned against

- Amazon Redshift: 10 of 35 labels negative. "Avoid for tight budgets: Snowflake/Redshift (higher baseline compute ~$300+/month)" (Grok 4.20, budget prompt)
- Census: 12 of 63 labels negative. "❌ Census: Requires Enterprise for most features; quote-based pricing" (GLM 4.7 FlashX, budget prompt)
- Hightouch: 9 of 65 labels negative. "Both Census and Hightouch excel at the "reverse" direction but require separate solutions... This fragmentation increases complexity and maintenance burden." (Claude Haiku 4.5, negative prompt)
- BigQuery: 7 of 65 labels negative. "BigQuery (Proceed with Query Guardrails) ... can cost the company hundreds of dollars in a single click" (Gemini 3.5 Flash, negative prompt)

## Record

- Method: https://www.gane.ai/index/gtm/methodology
- License: CC BY 4.0. Cite as Gane Index, September 2026 Edition, www.gane.ai/index/gtm.