Research that searches deeper and writes precisely.
Connect built-in and custom data sources, set exactly what your agent can search, and get reports where every sentence links back to what was actually read — grounded, not guessed.
Everything you need for trustworthy, in-depth research.
Brings your sources together, traces every answer to its origin, and goes beyond surface-level results — without compromising your privacy. Install the browser connector to connect your data sources in one click.
Custom data sources
Bring built-in and custom data together in one place. Decide what your agent can access so every search stays intentional and controlled.
Broad & deep search
Sweep across multiple sources for coverage, then dive into full pages for detail. One workflow for both breadth and depth.
Clear citations
Every insight links back to the exact source. Verify facts instantly and see how each conclusion was reached.
Research at scale.
Most deep research tools let the agent roam the open web freely. SpanSearch starts with the sources you choose — built-in connectors and custom data you bring in — and lets you set exactly what your agent can access before research begins.
Research reports generated — searched deep, written precisely, fully cited.
Connectors built in from day one, with more added regularly.
“I used to block out a week reading internal and external docs, then cross-check everything by hand. SpanSearch cross-verifies both in a morning — cited and aligned.”
Product manager at Meta
Questions & Answers
Pricing to fit your research needs.
Free
Free
Perfect for getting started
- No credit card required
- Lightweight models
- Limited requests during peak hours, standard response times
Professional
$10/mo
Everything you need for deep research
- 4,000 credits per month
- Unlock all advanced features
- Access to frontier models
- No request limits during peak hours, faster response times
- 24/7 priority support
Premium
$20/mo
Higher limits for research at scale
- 8,000 credits per month
- Unlock all advanced features
- Access to frontier models
- No request limits during peak hours, faster response times
- 24/7 priority support
Ready to research with sources you trust?
Stop double-checking AI answers. Run your first research today — no credit card needed.