Based only on the facts in our directory. The right pick still depends on the job you need done.
Lower starting price
Not comparable
Not comparable: Defog does not list a price
Free plan
Vanna
Only Vanna has one
Higher rating
Vanna
3.9 against 4.4
Same job?
Yes
Both are Data and Analytics tools
Side by side
Compared on
Defog
Vanna
Our rating
3.9
4.4Better
Starts at
Not listed
Free
Free plan
No
YesBetter
Category
Data and Analytics
Data and Analytics
Plans
See pricing
Free
Key features
SQLCoder open-source model family fine-tuned specifically for text-to-SQL
Multiple model sizes (7B to 70B parameters) for different latency and accuracy needs
sql-eval benchmark framework for testing SQL-generation accuracy against schemas
On-premises or private-cloud deployment options for schema privacy
Metadata-only fine-tuning approach designed to avoid exposing underlying row data
Open-source RAG framework for text-to-SQL
Self-hostable via pip install with full configuration control
Support for multiple LLM providers and databases
Multi-turn conversation and access controls for enterprise use
Free and open source
Pros
Open-source SQLCoder models can be self-hosted, avoiding vendor lock-in
Benchmarked accuracy claims are backed by a public sql-eval framework rather than marketing copy alone
Metadata-only fine-tuning limits how much sensitive data the model sees during setup
Genuine open-source control over deployment and model choice
RAG-based approach improves accuracy using an organization's own schema and history
Wide compatibility across LLM providers and databases
Cons
No published pricing; every enterprise deployment requires a sales conversation
Small team based primarily in Singapore, which may affect support hours for other regions
Self-hosting the open-source models requires in-house ML infrastructure expertise
Requires real engineering effort to deploy and configure, not a ready consumer app
Self-hosting means managing infrastructure directly
Less polished out-of-the-box experience than hosted consumer tools
Company
Defog, founded 2023
Vanna AI
Prices come from each vendor's pricing page, last checked 20260718. Check the vendor before you buy.
FAQ
Questions people ask
Is Defog better than Vanna?
In our reviews Defog scores 3.9 and Vanna scores 4.4. The better pick depends on the job. Defog: Fine-tuned language models translate natural-language questions into SQL for enterprise data teams. Vanna: An open-source, self-hostable RAG framework, not a hosted consumer app.
Vanna
Defog
