Teaches programming through bite-sized interactive lessons and browser playgrounds, but covers less advanced data science.
DataCamp records 6,237,230 monthly visits with -0.4% month-over-month growth and Freemium pricing. Lemmi records 0 monthly visits with -100% growth and Freemium pricing.
AI mock interviews with feedback you can act on
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | datacamp.com | lemmi.io |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 6.24M (6,237,230) | 0 (0) |
| MoM Traffic Delta | -26.43K (-0.4%) | -2.33K (-100%) |
| Primary Market & Share | 🇺🇸 United States (23.7%) | 🌐 Global (—) |
| Direct Visits / mo | 2.47M | 0 |
| User Rating | 4.6 | 4.2 |
| Supported Platforms | Website | Website |

Interactive courses for data science, AI and analytics skills
Short browser-based exercises in Python, SQL, R and more give instant feedback so you learn by writing real code.
Structured learning paths for data analyst, data scientist, AI engineer and other roles sequence courses into a coherent curriculum.
Exams such as AI Fundamentals, SQL Associate and Data Analyst certification let you demonstrate verified skills to employers.
An in-platform AI assistant helps explain concepts and debug code, alongside courses on the OpenAI API, prompt engineering and building AI apps.
AI mock interviews with feedback you can act on
Practice interviews built from your background, with questions designed to mirror the kind of conversation a real interviewer would have with you.
Clear notes on what you did well and what needs fixing, rather than generic advice that applies to everyone.
Converts your feedback into a prioritised roadmap so each practice session has a concrete next step.
Short exercises that focus on the specific weak areas surfaced in your previous attempts, so improvement is measurable.
Teaches programming through bite-sized interactive lessons and browser playgrounds, but covers less advanced data science.

SpecialistTeaches math and computer science through interactive visual puzzles and AI tutoring instead of video courses.
Delivers AI-native enterprise learning and curated courses, but focuses broadly on workforce skills rather than data science.
Delivers AI-native enterprise learning and curated courses, but focuses broadly on workforce skills rather than data science.
SpecialistOffers browser-based Linux and DevOps labs guided by AI, but lacks broad multi-language data science curriculums.
SpecialistOffers browser-based Linux and DevOps labs guided by AI, but lacks broad multi-language data science curriculums.
SpecialistCombines technical assessments and practice-based engineering learning, but targets hiring and technical screening more heavily.
SpecialistCombines technical assessments and practice-based engineering learning, but targets hiring and technical screening more heavily.
Instant AI feedback on your resume and LinkedIn profile
Instant AI feedback on your resume and LinkedIn profile

AI resume builder that tailors your resume to the job description
AI resume builder that tailors your resume to the job description

SpecialistAdaptive online exam prep that adapts to how you learn
SpecialistAdaptive online exam prep that adapts to how you learn
AI-powered resume scoring, skill insights and interview feedback for data-driven career preparation
AI-powered resume scoring, skill insights and interview feedback for data-driven career preparation

Provides hands-on cloud and data lab environments with AI simulations, but lacks DataCamp's structured course catalog.
End-to-end career services with AI tools to land your next role
End-to-end career services with AI tools to land your next role

AI career copilot for resumes, LinkedIn, and the whole job hunt
AI career copilot for resumes, LinkedIn, and the whole job hunt