Defog vs Tellius

A side-by-side comparison of Defog and Tellius, two Analytics tools, drawn from Ignaite's continuously-verified listings.

Compared from listings verified as of 2026-06-20

Defog

Analytics

Natural-language data analyst that turns questions into SQL.

View Defog

Tellius

Analytics

Agentic analytics that investigates why your metrics moved and delivers the answer.

View Tellius

At a glance

Feature comparison of Defog and Tellius
Attribute	Defog	Tellius
Category	Analytics	Analytics
Pricing	PAID	PAID
License	Proprietary	Proprietary
Deployment	Cloud	Cloud
Platforms	Web, API	Web, API
Model support (differs)	Self-contained (on-device)	—
Vendor (differs)	Defog, Inc.	Tellius

The honest brief

Defog

Powered by its own open SQLCoder model rather than a general LLM, with a privacy stance that never sends your data to the model.

Purpose-built SQLCoder model
Strong data-privacy stance
Connects to many DBs and warehouses
YC-backed (W23)

Pricing not publicly listed
Small team and product
Scope focused on SQL analytics

Tellius

Beyond NL-to-SQL — it autonomously investigates why a metric moved, ranking drivers across hypotheses, and returns board-ready memos rather than dashboards.

Automated root-cause and driver analysis
Conversational NL analytics (Kaiya)
Proactive 'missions' monitor KPIs
Outputs presentation-ready insights

Enterprise sales motion; no public pricing
Overkill for simple dashboards
Smaller ecosystem than BI incumbents

Defog details Tellius details All Analytics apps