Koji vs Perspective AI (2026): AI-Moderated Interview Platforms Compared

TL;DR: Perspective AI and Koji are genuinely close — both are AI-native platforms that moderate voice and chat interviews, probe follow-ups in real time, and synthesize the results. The decision usually comes down to how you want to buy and start: Perspective AI is sales-led and aimed at enterprise functions, while Koji is transparent, self-serve, and built so a single PM or founder can launch a study this afternoon. If you want to talk to sales and roll out across departments, look at Perspective AI. If you want to run real research today without a contract, start with Koji.

Quick answer: which one fits?

• Choose Perspective AI if you are an enterprise team standardizing AI conversations across sales, marketing, support, and research, and you are comfortable with a sales-led, inquiry-based buying process.
• Choose Koji if you want published pricing, a free tier you can start on right now, and a research-first platform with structured question types and one-click reports.

Both replace static forms with conversations. The split is buying motion and depth of the research workflow.

What Perspective AI does

Perspective AI is an AI-moderated conversation platform that positions itself as a form replacement and a research engine in one. Its standout structure is four agent types:

• Interviewer — runs research-style interviews (discovery, win/loss, churn, JTBD).
• Concierge — guides users through high-friction workflows.
• Advocate — engages on behalf of the brand.
• Evaluator — assesses responses against criteria.

The voice agent handles natural-language interviews across major languages with real-time probing and a post-interview "Magic Summary" in the requester's chosen language. Perspective AI markets heavily to SaaS/tech, financial services, and professional services, and frames itself as purpose-built for AI-moderated conversations at every stage rather than AI bolted onto a survey tool.

Pricing is not publicly listed — the platform is sales-led, with a free-start option referenced in its FAQ but no transparent plan tiers. That is a fit for enterprises with procurement cycles, and a hurdle for anyone who wants to evaluate cost before a sales call.

What Koji does

Koji is an AI-native customer research platform with the same conversational core — AI-moderated voice and chat interviews with real-time follow-up probing — but a deliberately research-first, self-serve design:

• Six structured question types in a single study — open_ended, scale, single_choice, multiple_choice, ranking, and yes_no — so you capture an NPS or CSAT number and the conversational "why" in the same interview. (See the structured questions guide.)
• Automatic thematic analysis across every transcript, surfacing themes and patterns with supporting quotes.
• One-click reports plus an AI consultant you can ask follow-up questions about your data.
• A native MCP server so you can spin up studies and pull insights directly from Claude, Cursor, or ChatGPT.
• Transparent pricing: Free (10 credits), Insights €29/mo, Interviews €79/mo, custom Enterprise — with a quality gate so only conversations scoring 3+ consume a credit.

Head-to-head comparison

| Dimension | Perspective AI | Koji | |---|---|---| | Core capability | AI-moderated voice + chat interviews | AI-moderated voice + chat interviews | | Real-time follow-up probing | Yes | Yes | | Distinct model | 4 agent types (Interviewer, Concierge, Advocate, Evaluator) | Research-first studies with 6 structured question types | | Structured measures + qualitative in one study | Partial | Yes — 6 question types natively | | Automatic thematic analysis | Yes (Magic Summary) | Yes — cross-interview theme coding | | MCP / developer access | Not advertised | Native MCP server | | Pricing | Sales-led, not public | Free → €29 → €79 → custom | | Time to start | After a sales conversation | Today, self-serve | | Positioning | Enterprise, cross-department | Research-first, founder/PM/researcher-friendly |

Where they genuinely differ

Buying motion. This is the biggest practical difference. Perspective AI routes you to sales; Koji lets you sign up, spend your free credits, and judge the product on your own data before paying anything. For lean teams, that is decisive.

Research depth out of the box. Perspective AI's agent-type framing is powerful for cross-department use cases beyond research (concierge flows, advocacy). Koji concentrates on the research workflow: structured + qualitative questions in one study, thematic analysis, exportable reports, and an AI consultant. If your primary job is research, Koji's workflow is more direct.

Transparency. Koji publishes its pricing and its credit model. With Perspective AI you cannot model cost until you talk to sales — fine for enterprises, friction for everyone else.

What the 2026 data says

The market is moving toward exactly this category — AI that runs the conversation, not just summarizes it:

• AI embedded directly in research software grew from 62% to 66% of researchers in 2026, while reliance on general-purpose chatbots fell from 75% to 67% (State of User Research 2026). Teams want purpose-built research AI, not a generic LLM.
• 53% of researchers now use AI regularly, and Qualtrics found teams not adopting AI are 4x more likely to lose organizational influence.
• Customer interviews remain the most-used method at 86% adoption — the conversation, not the survey, is where the strategic insight lives.
• Research being essential to all levels of strategy tripled from 8% to 22% year over year — which is why speed-to-insight and self-serve access increasingly win deals.

Bottom line

If you are an enterprise standardizing AI conversations across many departments and you are happy to engage sales, Perspective AI is a credible, well-positioned choice. If you want to do research now — transparent pricing, a free tier, structured-plus-qualitative questions in one study, automatic theme coding, and an MCP server — Koji is the faster, more transparent path. Both run great AI-moderated interviews; Koji just lets you prove it on your own data before you ever speak to a salesperson.

Common research jobs, mapped

Here is how the two platforms line up against the research jobs teams run most:

• Discovery interviews — Both moderate open-ended conversations with real-time probing. Koji adds structured questions so you can layer a quick scale or single-choice read on top of the qualitative depth in the same session.
• Win/loss analysis — Both can interview won and lost deals. Koji's thematic analysis codes reasons across every transcript so patterns surface without manual tagging.
• Churn diagnosis — Koji's free-to-€29 entry makes it easy to stand up a churn-interview study immediately; Perspective AI requires a sales conversation first.
• Concept and pricing tests — Both support stimulus-based conversations. Koji captures ranking and choice responses natively alongside the spoken reaction.
• Cross-department conversational workflows — Perspective AI's Concierge and Advocate agents extend beyond research into guided and brand-facing flows; if that breadth is the goal, it is a genuine differentiator.

How to evaluate without a sales call

The fastest way to decide is to run the same study on both. With Koji you can do that today: sign up, spend your 10 free credits on a real interview, read the auto-coded report, and ask the AI consultant follow-up questions about your own data. Perspective AI will require an inquiry first — so start with the platform you can test immediately, then book the sales call only if you still need it.

Try Koji free

See how fast AI-moderated research can be. Launch a voice or chat study, let Koji probe every respondent for the why, capture structured and open-ended answers together, and get an auto-coded report with quotes in hours. Start free with 10 credits — no sales call, no contract, no research expertise required.