italki Group Classes vs Preply 1-on-1 Tutoring
Same Bayesian formula, same rubric — so the difference in scores reflects the difference in the courses, not the difference in how we evaluated them.
italki · Languages
italki Group Classes
Preply · Languages
Preply 1-on-1 Tutoring
Per-criterion
Class topics span daily conversation to exam prep and debate — stronger than a blank-slate tutor session. But content quality varies by teacher and sessions repeat across a small topic roster. No graded curriculum arc linking one class to the next.
Group-class teachers on italki are professional teachers, not community tutors. Quality is generally consistent, but instructors must manage mixed-level groups, which compresses individual attention. Teacher profiles and reviews are browsable before booking.
At $7–12 for a one-hour group session the per-class price is hard to beat. Value flips if you compare per-minute of actual speaking time to a $10 community tutor — groups give you roughly 10–15 minutes live output per hour versus 60 on 1-on-1.
italki's platform support is adequate but not fast. Group-class refund policy requires cancellation 24 hours in advance. Live chat exists but resolution times for payment disputes are inconsistent per reviewer reports across the wider italki sample.
Speaking in front of peers under mild social pressure is genuinely useful output practice. Topic-focused classes (news, interview prep, travel) transfer directly. Ceiling is lower than 1-on-1 because correction is shared and spontaneous exchanges are shorter per learner.
No curriculum — content is whatever the tutor brings. Preply's package model nudges teachers toward longer engagements and marginally more structured plans than italki's pay-per-lesson default, but variance is still large and the platform does not vet pedagogy.
Broad global tutor pool, strong supply in English-as-a-second-language and major European languages. Reviewers find tutors for less-common languages like Khmer at $10-15/hour. Vetting remains the student's job — most learners trial 2-4 tutors before settling.
Per-hour rates ($10-30) overlap with italki, but subscription-style packages and aggressive cancellation friction pull effective value down. Reviewers describe pricing that "always comes up higher, never lower" and packages that can expire on tutor reschedules.
The subscription mechanic is the biggest contrast with italki — pre-paid weekly packages create real commitment that helps learners who would otherwise drift. The same mechanic frustrates anyone who changes tutors or pauses; works for steady users, against churning ones.
Same speaking-and-correction engine as italki and the same outcomes — multiple Hacker News commenters credit weekly Preply tutors with breaking them out of Duolingo plateaus into actual conversation. The product is the tutor, and the tutor works.
Scoring methodology applies identically to every course on the site — see the formula.