Koji vs Slido for Course Evaluation: Live Polling or Real Feedback? (2026)

Short answer: Slido is an excellent live audience-engagement platform — polls, Q&A, quizzes and word clouds that light up a lecture theatre in real time. It was never designed, however, to run standardized end-of-term course evaluations, to analyse thousands of open-ended student comments, or to produce the longitudinal evidence a quality office needs for accreditation. Koji is purpose-built for exactly that: AI-moderated conversational interviews that probe why, automatic thematic analysis of qualitative feedback, and EU/GDPR-native data handling. If you want the room engaged during class, reach for Slido. If you want defensible feedback that improves teaching and stands up to reviewers, that is Koji's job. Many institutions run both.

What Slido actually is

Slido is a Cisco-owned audience interaction tool. According to Slido's own documentation, it lets presenters run live polls, collect audience questions through interactive Q&A, host quizzes, and gather real-time reactions during virtual, hybrid, and in-person events. Slido states that it is compliant with industry standards including ISO 27001, ISO 9001 and the GDPR, and it lets participants respond either anonymously or by name.

It is genuinely good at what it was built for. In a large lecture, Slido turns a passive audience into an active one: a live word cloud on the projector, a quick multiple-choice pulse check, an upvoted question queue that surfaces what students most want answered. For synchronous engagement, it is one of the best tools on the market, which is why it is widely used across European higher education alongside peers such as Mentimeter, Vevox and Wooclap.

Slido offers a free tier and paid plans. As of publication, Slido's public pricing lists a free plan (with a cap on participants and a limited number of polls per event), paid annual plans that scale up from roughly €/$150 per year, a higher Professional tier, and custom Enterprise pricing; exact figures vary by source, region and bundling with Cisco Webex, so confirm current pricing directly with Slido. Institutions with certain paid Cisco Webex plans may already have Slido features bundled.

Where Slido and course evaluation part ways

The mismatch is not about quality — it is about purpose. Course evaluation is an asynchronous, standardized, longitudinal process that has to be fair across hundreds of modules, comparable term over term, and auditable years later. Live polling is a synchronous, in-the-moment engagement format. Four gaps matter for a quality office:

1. No conversational depth. A Slido poll captures a rating or a short free-text line. It cannot ask a good follow-up question. When a student writes "the labs were confusing", Slido has no way to ask which labs, or why. Koji's AI moderator does exactly that — it probes adaptively, the way a skilled interviewer would, so you learn the actionable reason behind the rating.
2. Manual qualitative analysis. Slido's open-text output is a list you export to a spreadsheet. Someone still has to read, code and theme every comment by hand. Koji performs automatic thematic analysis, clustering comments into themes with representative quotes and prevalence — turning thousands of responses into a report in minutes rather than weeks. (See our overview of student feedback text analytics.)
3. No standardized, longitudinal evidence. Slido events are one-off. There is no built-in concept of "the same module, every semester, compared over five years", no cohort dashboards, and no accreditation reporting. Koji is built around the evaluation cycle and produces longitudinal cohort evidence directly.
4. No closing-the-loop workflow. Slido has no mechanism to log what you changed in response to feedback and report it back to students and reviewers. Koji tracks actions and closes the loop — the single strongest signal to students that their feedback matters.

Koji vs Slido: side-by-side

Dimension	Slido	Koji
Primary purpose	Live audience engagement (polls, Q&A, quizzes)	Standardized course & programme evaluation
Collection mode	Synchronous, in-session	Asynchronous, scheduled evaluation cycles
Question depth	Fixed polls + short free text	AI-moderated conversational interviews with adaptive follow-ups
Open-text analysis	Manual export to spreadsheet	Automatic thematic analysis with quotes and prevalence
Standardized comparability	Not designed for it	Bias-aware standardized moderation across modules
Longitudinal cohort reporting	No	Yes — cohort dashboards over time
Closing-the-loop action tracking	No	Yes — documented actions and student-facing updates
Accreditation evidence	Not built for it	Accreditation-ready longitudinal evidence
Anonymity	Anonymous or named participation	Anonymous by design, with small-cohort safeguards
Data handling	ISO 27001 / ISO 9001 / GDPR-compliant (per Slido); Cisco-owned	EU/GDPR-native, built for European institutions
Best fit	In-class engagement, town halls, conferences	End-of-module, formative, and quality-cycle evaluation

Competitor facts above reflect Slido's own public statements as of publication; verify current specifics with Slido.

When Slido is the better choice

We think honesty wins buyers, so here is where Slido beats Koji outright:

• Live, in-room engagement. If your goal is to energise a lecture, run a quiz, or surface questions during class, Slido is excellent and Koji is not the tool. Koji is for evaluation, not real-time interaction.
• Conference and town-hall Q&A. Slido's upvoted question queue is purpose-built for events and all-hands meetings.
• Quick, disposable pulse checks. A one-off "how are we doing today?" poll needs nothing more than Slido's free tier.
• You already own it through Webex. If Slido comes bundled with your Cisco Webex licence, using it for live engagement is a sensible, zero-marginal-cost choice.

Where Koji wins is the opposite job: the structured, fair, longitudinal, qualitative-heavy evaluation that feeds teaching improvement and accreditation. The two are complementary, not interchangeable — which is exactly why many institutions run Slido for engagement and Koji for evaluation.

Why the AI interview engine matters

Traditional course evaluation forces a trade-off: Likert scales are easy to analyse but shallow, while open-text questions are rich but expensive to read. Koji dissolves that trade-off. It uses the same AI interview engine that powers Koji's main platform for user and customer research — an engine designed to conduct thousands of simultaneous, moderated conversations and analyse them automatically. In an education context, that means every student gets what feels like a short, attentive interview, and your quality office gets a themed, quantified, accreditation-ready report without a fortnight of manual coding. For a deeper look at how this compares with legacy survey tools, see AI course evaluation vs traditional SET surveys.

How to decide

Ask three questions:

1. Do I need engagement or evidence? Engagement during class → Slido. Evidence for improvement and accreditation → Koji.
2. Do I need to understand why, at scale? If open-ended comments matter and you cannot afford to hand-code them, Koji's automatic thematic analysis is the deciding factor.
3. Will reviewers ask for this data later? If the answer is yes — programme review, ESG/ENQA, professional-body accreditation — you need standardized, longitudinal, closing-the-loop evidence, which is Koji's core and outside Slido's scope.

If you are weighing several tools at once, our best course evaluation software in Europe guide and the broader student feedback software comparison put Koji, Slido-style engagement tools, and dedicated evaluation platforms side by side.

A checklist for stretching a polling tool into evaluation

If you are currently using Slido (or Mentimeter, Vevox or Wooclap) as a stopgap for course feedback, run through this checklist before your next evaluation cycle. Each item is something reviewers or your own teaching staff will eventually ask for:

• Can you compare the same module across years? Live-polling events are one-offs; genuine monitoring needs a persistent, standardized record.
• Can you analyse open-text at scale without hand-coding? If a colleague is copying comments into a spreadsheet at midnight, you have outgrown the tool.
• Can you ask a follow-up question? A rating with no "why" is a number without a cause. Conversational probing is the difference between "the labs scored 3.2" and "students could not access the equipment in weeks 4–6".
• Can you evidence what changed? Closing-the-loop reporting — "you said, we did" — is both the strongest driver of student trust and the first thing an accreditation panel looks for.
• Is identifiable data handled to EU standards, with small-cohort safeguards? In small modules, even anonymous free text can re-identify a student without care.

Where a live-polling tool answers "no" to most of these, that is not a criticism of the tool — it is a sign you are using an engagement product for an evaluation job. Koji is built to answer "yes" to all five.

The bottom line

Slido and Koji are not really competitors — they are neighbours. Slido makes a live session interactive; Koji makes an evaluation cycle intelligent. If you have been trying to stretch a live-polling tool into an end-of-term evaluation system, you have felt the gaps: shallow questions, manual comment analysis, no longitudinal record, no accreditation story. That is the exact space Koji was built for.

See how Koji turns student feedback into accreditation-ready evidence — book a demo or explore the shared AI interview engine on koji.so.