The search engine that answers with sources: ask as you would a person and check every fact in one click.
Free plan
✓ Yes
Price
Free / Pro $20/mo / Max $200/mo
Plans and pricing
Free€0
Pro$20/month or $200/year (≈$16.67/month)
Max$200/month or $2,000/year
Education Pro$10/month
Enterprise Pro / Max$40 / $325 per user per month
AIAO score
97/100
Member rating
Not enough ratings yet
Languages
No verified data
Where to use it
Web, iOS, Android, Windows and macOS; Comet browser; Sonar API.
Pros
Every answer links its sources so you can check them instantly.
Up-to-date, real-time information.
One subscription to choose between OpenAI, Anthropic and Google models.
Comet, a free Chromium-based browser with an assistant that acts for you.
Cons
Clashes with publishers (lawsuits from Dow Jones, The New York Times, Britannica, Reddit…).
Limited free plan: about 3 Pro searches a day and 1 research report a month.
Agentic-browser risks (prompt injection) and training on by default.
Use cases
Students, journalists and researchers who need sourced answers; professionals who want several frontier AIs with one subscription; anyone looking for a Google alternative for complex searches.
Narrow the sources in the question itself (e.g. “only .gob.es sites and Spanish press from 2026”) and always open two or three citations before trusting a fact. If you use it for work, turn off “AI data retention” first.
Privacy and data
On Free, Pro and Max, “AI data retention” is on, so your queries may be used for training; turn it off in Settings > Preferences (only affects future data). On Enterprise, data is never used for training and files are deleted after 7 days.
The search engine that answers with sources: ask as you would a person and check every fact in one click.
Free plan
✓ Yes
Price
Free / Pro $20/mo / Max $200/mo
Plans and pricing
Free€0
Pro$20/month or $200/year (≈$16.67/month)
Max$200/month or $2,000/year
Education Pro$10/month
Enterprise Pro / Max$40 / $325 per user per month
AIAO score
97/100
Member rating
Not enough ratings yet
Languages
No verified data
Where to use it
Web, iOS, Android, Windows and macOS; Comet browser; Sonar API.
Pros
Every answer links its sources so you can check them instantly.
Up-to-date, real-time information.
One subscription to choose between OpenAI, Anthropic and Google models.
Comet, a free Chromium-based browser with an assistant that acts for you.
Cons
Clashes with publishers (lawsuits from Dow Jones, The New York Times, Britannica, Reddit…).
Limited free plan: about 3 Pro searches a day and 1 research report a month.
Agentic-browser risks (prompt injection) and training on by default.
Use cases
Students, journalists and researchers who need sourced answers; professionals who want several frontier AIs with one subscription; anyone looking for a Google alternative for complex searches.
Narrow the sources in the question itself (e.g. “only .gob.es sites and Spanish press from 2026”) and always open two or three citations before trusting a fact. If you use it for work, turn off “AI data retention” first.
Privacy and data
On Free, Pro and Max, “AI data retention” is on, so your queries may be used for training; turn it off in Settings > Preferences (only affects future data). On Enterprise, data is never used for training and files are deleted after 7 days.
