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Certifications from ₹99

Build proof.
Get certified.

The most affordable way for Indian students to build real-world projects and earn industry-recognized certifications. Starting from less than a coffee.

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Popular Challenges

Earn credit for real work. Not just participation.

Startup Idea Validator

fullstackAdvanced365d access
₹199onwards

Describe a startup idea. The app runs a full AI pipeline — market sizing, live competitor scan with web search tools, SWOT analysis, and a landing page draft. All streamed.

  • Design and implement a multi-stage LLM pipeline with distinct agent responsibilities
  • Use LangChain agents with Tavily web search to do live competitor research
  • Stream multiple independent pipeline stages to the frontend simultaneously over SSE
  • Build a pipeline progress tracker that visualizes each stage's completion status
See detailsEnroll now

Multi-Document RAG with Reranking

genaiIntermediate365d access
₹149onwards

Search across multiple document collections, rerank chunks by relevance using a cross-encoder, and generate a cited, structured answer from multiple sources.

  • Index and query documents from multiple distinct sources in a single vector store
  • Understand why initial vector search returns noisy results and why reranking helps
  • Integrate Cohere Rerank to score retrieved chunks by true relevance
  • Instruct an LLM to cite specific source documents in its generated answers
See detailsEnroll now

Personal Portfolio Website

frontendFoundation365d access
₹99onwards

Build a multi-page personal site with a hero section, projects gallery, skills list, and a working contact form. Your first deployable web project.

  • Structure a multi-page website using semantic HTML5 elements
  • Apply CSS Flexbox and Grid for real-world page layouts
  • Write responsive CSS using media queries for mobile and desktop
  • Add interactivity with vanilla JavaScript (event listeners, DOM manipulation)
See detailsEnroll now
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Pricing that makes sense

Value for Everyone.

We've eliminated the fluff. See the ROI of certification, and only pay for the validation you need.

Dev Challenge

Frontend, Backend, Full Stack, Data Science.

₹99onwards
  • Full Technical Specifications
  • Email Support
  • Verifiable Digital Certificate
  • 90 days access to material
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Popular

AI Challenge

GenAI and Machine Learning projects.

₹149onwards
  • Full Technical Specifications
  • Email Support
  • Verifiable Digital Certificate
  • 90 days access to material
Browse AI Projects

Skill Stack

Bundle 2+ projects to match your roadmap.

₹199onwards
  • Everything in single challenge
  • Detailed Code Review
  • Priority Support
  • Lifetime Access to Material
Make Your Combo

Built for Proof, Not Just Paper.

Every certificate generated by RexX is backed by a public GitHub repository. Employers do not just see a title; they see your commits, code quality, and persistence. The preview on the right reflects how an actual issued certificate looks.

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RexXRexX

Certificate Index

CERT-2026-X88B-9921

This is to certify that

Tammina Joshan Sai

Has reached the professional standard for

Transformer Encoder from Scratch

Successfully architected and deployed a production-grade neural network achieving 98.4% accuracy on multi-modal classification tasks.

Digital Signatory

Mohana sai Nidugonda Founder & CEO

Validated At

March 06, 2026

Actual Certificate Preview

How it Works.

Choose a project, build it yourself, submit for review. Every certificate is backed by your public GitHub repo.

01

Choose

Pick a project that matches your career goals.

02

Build

Develop locally with our specs and guidelines.

03

Get Certified

Connect GitHub. Get verified. Share your certificate.

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Still Got Questions? We Got You

If you're thinking it, someone already asked it and we've answered it here.

How do RexX certifications help me get internships?
RexX projects are real-world challenges that mirror industry work. When you showcase them:
  • Employers see your GitHub repo — proof you built it
  • Certificates are verifiable via public link
  • Projects span full-stack, data science, and GenAI

Want to stand out? Browse projects and pick one that matches your target role.

What's the difference between RexX and free online courses?
Free courses teach concepts. RexX gives you verifiable proof you applied them. You build a real project, push to GitHub, and earn a certificate that anyone can verify. No video lectures — just specs, constraints, and automated review.
Do employers recognize RexX certificates?
Yes. Certificates link to your public GitHub repo, so recruiters can see your actual code. We use cryptographic verification — the same approach used by professional credentials. Learn how verification works.
How much does a RexX project certification cost?
Projects start at ₹99. Each project is a one-time payment — no subscriptions. You pay once, build at your pace, and keep the certificate forever.
Is there a refund if I don't complete a project?
We don't offer refunds after purchase, but you can try before you buy: every project has a free preview of specs and requirements. Only pay when you're ready to submit for certification.
How long does it take to complete a project?
Depends on the project and your experience. Most students finish in 1–3 weeks. Each project lists an estimated duration (e.g. "2–4 weeks"). Build at your own pace — there's no deadline.
Can I use my own GitHub repo or do I need to start from scratch?
You can use an existing repo if it meets the project specs. Most students start fresh to follow our structure. Either way, you link your repo when submitting — we verify the code and issue the certificate.
What if I get stuck on a project?
Each project includes detailed specs and constraints. For deeper help, check our blog and community. Many projects have hints in the documentation. Stuck? Pick a simpler project first and level up.
Do I need to know Git before starting?
Basic Git is enough: clone, commit, push. If you're new, we recommend a quick tutorial (e.g. GitHub's "Hello World"). You'll need a GitHub account to submit and receive your certificate.
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