AI spreadsheet assistant that writes formulas, builds pivot tables and charts, and answers questions about Excel and CSV files.

Defog.ai
Privacy-first AI data analyst that turns plain-language questions into SQL, charts and answers from your databases.
What is Defog.ai?
Defog.ai is an AI data analyst for companies that want people to ask questions about their data in plain language rather than wait for someone to write a query. It connects to structured databases and warehouses such as Snowflake, Postgres, SQL Server and MySQL, takes CSV and Excel uploads, and can pull from SaaS tools to answer across several sources. Answers come with automatic visualizations that you can save and share. The system is built on SQLCoder, Defog's open-source text-to-SQL model, and the vendor says the underlying data stays in your environment because the generated SQL runs on your side. You can steer results with guided teaching and feedback, and run statistical analyses or multi-step reasoning on complex questions. It is available through a desktop app, a Slack bot, Docker, or the AWS and GCP marketplaces. The published Enterprise (Cloud Hosted) plan costs $5,000/month for 20,000+ queries; the self-hosted tier is quoted on request.
Use cases
- Ask business questions of company data
- Query Snowflake or Postgres in plain language
- Analyze uploaded CSV and Excel files
- Ask data questions from Slack
- Run statistical analyses without extra software
- Self-host a text-to-SQL model
Who it's for
Why use Defog.ai
- Business users get answers without waiting on a data team, and can ask follow-ups in plain language.
- Data stays in your environment, since the SQL query is executed on your side.
- Every generated query is tested and filtered for malicious keywords to reduce prompt-injection risk.
- You can deploy via Docker, the AWS or GCP marketplaces, or fully on your own servers.
- Feedback and glossary definitions teach it your business terms over time.
Defog.ai features
- Natural-language questions answered with SQL
- Databases and warehouses incl. Snowflake, Postgres, SQL Server, MySQL
- CSV and Excel file uploads
- SaaS tool connections for cross-source questions
- Automatic visualization with save and share
- Native Slack bot and desktop app
- Deterministic security filters on generated SQL
- Guided teaching and no-code alignment
- Multi-step reasoning and statistical analysis
- Custom AI tools and SSO on Enterprise
Defog.ai integrations
How to get started with Defog.ai
- Choose a deployment: cloud-hosted, Docker, desktop app or marketplace listing.
- Connect your database, upload CSV or Excel files, or link SaaS tools.
- Ask a question in plain language and review the SQL-backed answer and chart.
- Give feedback through guided teaching so the model adapts to your definitions.
- Save results or ask for them in Slack to share with your team.
Defog.ai limitations
- Published pricing starts at $5,000/month on the Enterprise cloud plan
- Self-hosted use needs an annual commitment
- Accuracy figures on the site are the vendor's own claims
Defog.ai pricing
Defog.ai is sold on custom quotes, so its prices aren't published. Paid plans start at $5,000 per month, according to the official pricing page on .
Defog.ai plans
Enterprise (Cloud Hosted)
$5,000/month
contact us
- 20,000+ queries/month
- One-click Docker deployment
- SSO authentication
- Custom AI tools
- Up to 200 queries/minute
- SLA, MSA and DPA available
Enterprise (Self-hosted)
Price on vendor site
annual commitment
- Everything in Cloud Hosted
- Host 8b, 14b or 32b models on your infrastructure
- Unlimited queries
- No rate limits
Plans as listed on the official pricing page on . Prices can change and may vary by country or exclude tax. Check the official pricing page.
Defog.ai alternatives
The main Defog.ai alternatives listed on Debuly are Vanna, BlazeSQL, Text2SQL.ai, Julius AI, AI2SQL and DataLine. The table compares pricing and platforms; order is A–Z.
| Tool | Pricing | Starting price | Platforms |
|---|---|---|---|
| Defog.ai | Contact sales | $5,000/mo | Web, Self-hosted, API |
| AI2SQL | Freemium | $9/mo | Web, Windows, macOS, API |
| BlazeSQL | Free trial | $39/mo | Web, API |
| DataLine | Open source | — | Web, Self-hosted |
| Julius AI | Freemium | $20/mo | Web |
| Text2SQL.ai | Free trial | $29/mo | Web, Windows, macOS, Linux |
| Vanna | Open source | $50/mo | Python, Web, API, Self-hosted |
AI2SQL
AI SQL assistant that turns plain-English requests into queries, explains and fixes SQL, and can run read-only queries on your own database.
FreemiumVisit AI2SQL (official site)
BlazeSQL
AI data analyst that connects to your SQL database, answers questions in plain language, and turns the results into charts, dashboards and reports.
Free trialVisit BlazeSQL (official site)
DataLine
Open-source AI data analysis tool that lets you chat with your data to get tables, charts and dashboards without writing SQL.
Open sourceVisit DataLine (official site)
Julius AI
AI workspace for analysing data, researching, and building presentations, reports, websites, images and video from plain-language prompts.
FreemiumVisit Julius AI (official site)
Text2SQL.ai
AI SQL query generator that turns plain-language questions into SQL for your own schema, with a public API and desktop app.
Free trialVisit Text2SQL.ai (official site)
Vanna
Open-source Python framework for building user-aware AI agents, such as SQL data analysts, with an optional managed cloud.
Open sourceVisit Vanna (official site)
Defog.ai FAQ
How much does Defog.ai cost?
The pricing page lists Enterprise (Cloud Hosted) at $5,000/month with 20,000+ queries per month and up to 200 queries per minute. The Enterprise (Self-hosted) plan has no price shown and requires an annual commitment.
Is there a free plan for Defog.ai?
Defog's documentation says signing up gives a free API key that queries up to 5 tables with 25 columns and 1000 queries a month. The current pricing page lists only Enterprise plans, so confirm with the vendor.
Does my data leave my servers with Defog?
The vendor says underlying database data never leaves your environment and the SQL is executed there. Self-hosted models run on your own infrastructure.
Which databases does Defog.ai support?
It lists Snowflake, Postgres, SQL Server, MySQL and more, plus CSV and Excel files and connected SaaS tools.
Can I use Defog.ai in Slack or Docker?
Yes. It offers a native Slack bot, a desktop app, Docker deployment and listings on the AWS and GCP marketplaces.
What are alternatives to Defog.ai?
Vanna, BlazeSQL, Text2SQL.ai and ThoughtSpot are related options for natural-language data questions.
Sources & verification
Facts on this page come from the official sources below, each with the date we read it. Written by Debuly; the vendor did not review this page.
| Source | Type | Accessed |
|---|---|---|
| defog.ai/ | official | |
| defog.ai/pricing | pricing | |
| old.defog.ai/pricing/ | pricing | |
| defog.ai/product | official | |
| docs.defog.ai/ | docs | |
| defog.ai/blog/may-2023-changelog | official |
Image credits
- Logo: from defog.ai · fetched · Vendor trademark, used only to identify the product; removed on request
- Cover: none collected yet, so a generated tile is shown.
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