Crin AI

What it does

Most AI courses explain concepts. CRIN shows them. Watch raw text become tokens, integers, then vectors — live, in an animated node graph. Every transformation is visible, every step has real data. Built for developers who learn by seeing. Three depth levels per concept — beginner to advanced — so you always learn at your pace. No slides. No passive video. Just AI, showing its work.

Free interactive lessons that show how AI really works — transformers, attention, embeddings, tokens — as live animated data flows. No prior AI knowledge needed. Built for developers.

Every transformation — from text to tokens to embeddings to vectors — happening live, inside the nodes. The tokenizer node splits your text into colored pills — exactly like OpenAI's tokenizer tool. The embedding node renders 768 floats as a heatmap. The vector node shows bar charts. Real data, not placeholders. Think of it as giving each word a unique fingerprint. Words with similar meanings end up with similar fingerprints. The same machine that processed all stored documents now processes your question — so they speak the same language. This is where language becomes mathematics. Similar words produce similar vectors. Toggle between Visual for the shape of what's happening, Simple for a…from crin.ai

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  ChartGen AIJan 2026 · chartgen.ai · ▲489

  Hi HN, I’m the maker of ChartGen AI. Last year, we launched a text-based AI agent called Ada.im. After analyzing thousands of user interactions, we stumbled upon a pattern we hadn't expected: users were constantly trying to paste data rows and ask for visual representations, but the text-based model couldn't handle it well. We realized that for marketers, seeing the trend is more valuable than reading about it. We pivoted that insight into a standalone tool: Drag & Drop: Upload raw CSVs (FB Ads, GA4, TikTok, etc.). Processing: We map the disparate column names into a unified schema. Viz: It…

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  Blooming2025 · ▲94

  Chain text, image and video AI models on a whiteboard

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  X-PilotApr 2026 · x-pilot.ai · ▲328

  Hi HN, I'm Heshan, founder of X-Pilot. We're building an AI Video Generator for online courses and educational content. Unlike most text-to-video generator that render videos directly from models (which often produce random stock footage unrelated to the actual content), we take a code-first approach: generate editable code layers, let users verify/refine them, then render to video. The Problem We're Solving Most AI video generators treat "education" and "marketing" the same—they optimize for "looks good" rather than "logically accurate." When you feed a technical tutorial or course…

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  Nodeflow AI2025 · get.nodeflowai.com · ▲122

  Visual AI workspace: create a month of content in hours

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  CoursekitMar 2026 · productizeyourmind.com · ▲257

  Turn your course into a full suite of embeddable AI agents

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  InstaGraph2023 · instagraph.ai · ▲102

  Text2Graph AI Agent: A text prompt into a knowledge graph

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  Spira Maxima▲578

  Video model that turns script into viral social media videos

  AI · 17d ago · spira.ai

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  Rill Browser▲540

  The browser where Claude Code and Codex work beside you

  AI · 17d ago · rill.love

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  Germany's new sovereign AI model Kolibri▲424

  Kolibri is Aleph Alpha

  AI · 19d ago · tej.as

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  Giving Opus 5.5 a simulated paint canvas▲392

  Paintings by AI models: programs run through a simulation of oil paint.

  AI · 20d ago · stillwet.art

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  PixVerse R2▲381

  A real-time world model you can explore and change

  AI · 29d ago · world.pixverse.video

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  Hemory▲381

  Keep listening. Searchable memory for your AI agents.

  AI · 30d ago · hemory.com

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  Brila▲1,364

  One-page websites from real Google Maps reviews

  AI · Apr 2026 · brila.ai

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  A game where you build a GPU▲964

  Thought the resources for GPU arch were lacking, so here we are

  Life & fun · Apr 2026 · jaso1024.com

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  I built a tiny LLM to demystify how language models work▲915

  Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.

  AI · Apr 2026 · github.com

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  Fathom 3.0▲800

  AI meeting notes: now bot-free, in ChatGPT & Claude + more

  AI · Apr 2026 · fathom.ai

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  Brutalist Concrete Laptop Stand (2024)▲786

  I made a laptop stand out of solid concrete, in the style of brutalist architecture, with themes of urbex and urban decay

  Life & fun · Apr 2026 · sam-burns.com

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  I built a frontpage for personal blogs▲783

  With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories. There are two versions: Minimal (HN-inspired, fast, static): https://text.blogosphere.app/ Non-minimal: https://blogosphere.app/ If you don't find your blog (or your favorite ones), please add them. I will review and approve it.

  AI · Apr 2026 · text.blogosphere.app