CompareLast updated 25 September 2026
Tadeus vs Ontora
Both use AI to interview employees and capture knowledge that never gets written down. They are built for different jobs.
Short answer
Choose Ontora if you are a leadership, operations or PE team that wants a finished diagnostic: process maps, bottlenecks and an automation roadmap for a mid-market company.
Short answer
Choose Tadeus if you need to reach deskless or multilingual workers by voice, capture knowledge at specific moments of change, and return structured records into your own platforms and AI agents.
What each is built for.
Ontora
A Y Combinator company (Spring 2026)1 whose AI agents interview employees across an organisation, asynchronously and continuously, to map how work actually gets done.2 Outputs include themed insights, process maps and an automation roadmap with ROI estimates.3 Its launch materials target mid-market companies of roughly 200 to 2,000 employees and PE firms working across portfolio companies.2 Its website describes connecting to your tools through API, MCP and CLI.4
Tadeus
A real-time voice conversation layer for workforce platforms. Employees take a short, natural voice conversation on their own phone, in their own language. Each conversation returns a transcript, a structured summary, the data points you defined as structured JSON, and confidence, relevance and engagement scores, delivered by API or MCP into the systems and agents that need them.
Side by side.
| Tadeus | Ontora | |
|---|---|---|
| Primary job | Capture layer: voice conversations that feed your systems and agents | Operational discovery: map how work gets done and where it breaks12 |
| Primary buyer | HR, operations, compliance and implementation teams; workforce platforms and SIs | Leadership, operations and transformation teams; PE firms12 |
| Interview mode | Real-time voice, low latency, adaptive follow-up | Async AI interviews. Voice or text: not publicly stated12 |
| Built for deskless workers | Yes, designed phone-first and multilingual | Not publicly stated4 |
| When interviews run | Campaigns triggered by events: rollouts, policy changes, implementations | Continuous, recurring interviews1 |
| What you get back | Transcript, structured summary, custom fields as JSON, confidence, relevance and engagement scores, campaign insights | Themed insights, executive summary, process maps, automation roadmap with ROI estimates3 |
| Agents can commission interviews | Yes, via the Tadeus MCP server (create campaign, invite, search transcripts, get insights) | Positions its output as a context layer for AI agents and lists API, MCP and CLI connections. Agent-initiated interviews: not publicly stated14 |
| Embed in your own platform | Yes, API-first, built to embed in HR and workforce platforms | Connects to your tools through API, MCP and CLI. Embedding in HR or workforce platforms: not publicly stated4 |
| Pricing model | Usage-based, priced on conversation minutes; plans published on the pricing page | Not publicly stated4 |
| Backing | Independent, founder-led | Y Combinator, Spring 2026 batch1 |
Primary job
- Tadeus
- Capture layer: voice conversations that feed your systems and agents
Primary buyer
- Tadeus
- HR, operations, compliance and implementation teams; workforce platforms and SIs
Interview mode
- Tadeus
- Real-time voice, low latency, adaptive follow-up
Built for deskless workers
- Tadeus
- Yes, designed phone-first and multilingual
- Ontora
- Not publicly stated4
When interviews run
- Tadeus
- Campaigns triggered by events: rollouts, policy changes, implementations
- Ontora
- Continuous, recurring interviews1
What you get back
- Tadeus
- Transcript, structured summary, custom fields as JSON, confidence, relevance and engagement scores, campaign insights
- Ontora
- Themed insights, executive summary, process maps, automation roadmap with ROI estimates3
Agents can commission interviews
- Tadeus
- Yes, via the Tadeus MCP server (create campaign, invite, search transcripts, get insights)
Embed in your own platform
- Tadeus
- Yes, API-first, built to embed in HR and workforce platforms
- Ontora
- Connects to your tools through API, MCP and CLI. Embedding in HR or workforce platforms: not publicly stated4
Pricing model
- Tadeus
- Usage-based, priced on conversation minutes; plans published on the pricing page
- Ontora
- Not publicly stated4
Backing
- Tadeus
- Independent, founder-led
- Ontora
- Y Combinator, Spring 2026 batch1
Based on Ontora's public materials as of 25 September 2026. If anything here is out of date, tell us and we will correct it within 48 hours.
Where Ontora is the better fit
If you want an outside-in view of your whole organisation delivered as a leadership-ready diagnostic, with process maps and an automation roadmap, Ontora is designed around exactly that outcome and is working with design partners across media, PE and facilities.2 Tadeus gives you the structured data, not a consulting-style deliverable.
Where Tadeus is the better fit
- Your workforce is mostly deskless, shift-based or multilingual.
- You need capture tied to a specific moment: a system rollout, a policy change, an implementation.
- You want the output in your own systems and agents, not a separate dashboard.
- You are a platform or SI that wants to embed voice capture in your own product.
Can you use both?
Yes. They answer different questions. A leadership team might use an operations mapping tool to decide what to change, then use Tadeus to reach every frontline worker affected by the change and confirm it landed.
Hear it for yourself.
The fastest way to understand Tadeus is to run a conversation. Register, and you get free credits and templates ready to send for each of the main use cases.
Talk to the foundersLast updated 25 September 2026. Part of choosing a way to capture what your workforce knows.