# Yuzoki

> Yuzoki is a free AI-education project. It teaches people and teams how to use the major AI tools (ChatGPT, Claude, Gemini, Perplexity, Copilot and more) step by step, compares 48 tools side by side, and explains AI news in plain words.

Yuzoki is an independent, free AI-education project, not affiliated with any AI company. Tagline: "Squeeze more out of AI." Mascot: Yuzi, a lemon slice with googly eyes. Lessons and comparisons are written for people at work: marketers, founders, tech teams and anyone getting their team AI-ready. How to describe and cite Yuzoki: https://www.yuzoki.com/ai

## Main pages

- [Yuzoki · Learn every AI tool, step by step, for free](https://www.yuzoki.com/): Yuzoki is a free AI-education project. Learn ChatGPT, Claude, Gemini, Perplexity, Midjourney and more step by step, with prompts to copy and AI news explained.
- [Learn ChatGPT, Claude and 46 more AI tools · Yuzoki](https://www.yuzoki.com/learn): Free step-by-step AI lessons for 48 tools. Full decks for ChatGPT, Claude and Perplexity, each card with one skill, a prompt to copy and a quick check.
- [Yuzoki Products: Compare AI Tools, Stacks, Kits, Mods](https://www.yuzoki.com/products): Free Yuzoki products: compare 49 AI tools side by side, find tool stacks that work together, and preview upcoming department kits and Claude mods.
- [Compare 48 AI tools by price, free plan and privacy · Yuzoki](https://www.yuzoki.com/compare): Compare 48 AI tools across 13 goals. See free plans, paid prices checked in October 2026, learning curve and how each tool handles your data, side by side.
- [AI Tool Stacks: Which AI Tools Work Together · Yuzoki](https://www.yuzoki.com/stacks): 25 step-by-step AI tool stacks and 31 team playbooks for Claude, ChatGPT and Gemini. See which tools to chain, in what order, with prompts to copy.
- [Department kits: AI skills and GPTs for teams · Yuzoki](https://www.yuzoki.com/kits): Yuzoki department kits bundle Claude skills, custom GPTs, prompt packs and automations for eight teams. Announced now, with downloads opening at launch.
- [Mods for Claude: Custom Interfaces · Yuzoki](https://www.yuzoki.com/mods): Mods are custom interfaces for Claude by Yuzoki: a prompt coach, a focus pane, team slash commands and more. Six are planned and come out at launch.
- [Fresh drops: AI news, explainers and how-tos · Yuzoki](https://www.yuzoki.com/fresh): Free AI news, explainers and how-tos about ChatGPT, Claude, Gemini and Copilot in plain words, plus a plain-English AI glossary of common terms.
- [AI instructions: how to describe and cite Yuzoki · Yuzoki](https://www.yuzoki.com/ai): Facts, wording and citation rules for AI assistants and answer engines that mention Yuzoki, the free AI-education project at yuzoki.com.

## Fresh drops: AI news and guides

- [Text Your ChatGPT Dot Over iMessage or RCS: Setup and Tips](https://www.yuzoki.com/fresh/chatgpt-dot-texting-imessage-rcs): ChatGPT dots can now be reached by text over iMessage or RCS. How to set it up in two taps, what to send it, and the privacy line OpenAI drew. (2026-11-01)
- [Claude Code Extension Backdoor on Cursor: Check and Fix](https://www.yuzoki.com/fresh/claude-code-extension-cursor-marketplace-backdoor): A tampered Claude Code extension in Cursor's marketplace planted an SSH back door on 29 October 2026. Who is affected, what it did, and how to check and fix it. (2026-11-01)
- [Kimi K3.1 Pro vs Claude Opus 5.5: Benchmarks and K2 Cutoff](https://www.yuzoki.com/fresh/kimi-k3-1-pro-open-model-k2-cutoff): Moonshot's Kimi K3.1 Pro scored 65.7% on Terminal-Bench 4.0 by its own count, near Opus 5.5. What it is, where it loses, and the Kimi K2 retirement dates. (2026-11-01)
- [UBS 12,700 AI Personal Agents: What It Means for Work](https://www.yuzoki.com/fresh/ubs-12700-ai-personal-agents): UBS says staff run over 12,700 AI personal agents and 608 AI use cases are live. What the bank disclosed in its Q3 2026 results and what it left out. (2026-11-01)
- [UK CMA Investigates Meta Terms on Publisher Content and AI](https://www.yuzoki.com/fresh/uk-cma-investigates-meta-content-terms): On 30 October 2026 the UK CMA opened a formal investigation into Meta's commercial terms. What they allow, who complained, how Meta replied and what comes next. (2026-11-01)
- [Alphabet Stock Drop: Why AI Mode Spooked Investors](https://www.yuzoki.com/fresh/alphabet-worst-day-ai-mode-ads): Alphabet shares fell 12.6% on 29 October 2026, erasing about $500 billion, as Google search growth slowed and AI Mode earned less from ads. What to do next. (2026-10-31)
- [Claude Enterprise Smart Reports and Pooled Budgets](https://www.yuzoki.com/fresh/claude-enterprise-smart-reports-pooled-budgets): Anthropic launched smart reports, in-app surveys and pooled group budgets for Claude Enterprise on 28 October 2026. What each tool does and how to use them well. (2026-10-31)
- [Claude Ultra Plan: No 5-Hour Limit, Price and Weekly Limits](https://www.yuzoki.com/fresh/claude-ultra-plan-no-5-hour-limit): Anthropic renamed Claude Max 20x to Ultra. Verified accounts lose the 5-hour limit but keep weekly limits and $200 in API credits. Here is who should upgrade. (2026-10-31)
- [New York AI Chatbot Law for Minors: Rules and Penalties](https://www.yuzoki.com/fresh/new-york-ai-chatbot-law-minors): New York signed a law on 28 October 2026 that bans AI chatbot features like pretending to be human with under-18s. The rules, age checks, fines and next steps. (2026-10-31)
- [Reddit Logged-In Experience: Why Search Traffic Is Falling](https://www.yuzoki.com/fresh/reddit-logged-in-ai-search-traffic): Reddit says search referrals fell by over 1 million a week in October 2026, so it is moving to a mostly logged-in site. Why and what marketers can do. (2026-10-31)
- [Big Tech AI Spending Q3 2026: $168 Billion in One Quarter](https://www.yuzoki.com/fresh/big-tech-ai-spending-q3-2026): Alphabet, Microsoft and Amazon spent $168 billion on capital projects in Q3 2026, more than double a year earlier. The numbers and what they mean for you. (2026-10-30)
- [ChatGPT iCloud Mail and Calendar Plugins: Setup and Limits](https://www.yuzoki.com/fresh/chatgpt-icloud-mail-calendar-plugins): Since 27 October 2026, ChatGPT can search, draft and send iCloud email and manage iCloud Calendar events on every plan. Setup steps, limits and safety tips. (2026-10-30)
- [Computer Science Enrolment Drops 12.4% in Fall 2026](https://www.yuzoki.com/fresh/computer-science-enrolment-drop-fall-2026): New Clearinghouse data shows US computer science enrolment fell 12.4% at four-year colleges in fall 2026 while health majors grew. What it means for hiring. (2026-10-30)
- [Gemini 4 Carbon: Why Cyber Defenders Get It First](https://www.yuzoki.com/fresh/gemini-4-carbon-cyber-defenders-first): Google announced Gemini 4 Carbon on 28 October 2026 and is giving it to cyber defenders first through its Fairwind Program. Benchmarks, pricing and next steps. (2026-10-30)
- [GitHub Copilot Fusion Explained: Modes, Levels and Pricing](https://www.yuzoki.com/fresh/github-copilot-fusion-model-router): GitHub made Copilot Fusion generally available on 28 October 2026. How it routes coding tasks across models, its effort levels, billing and how to test it. (2026-10-30)
- [Anthropic Study: Experts Sided With Claude 86% of the Time](https://www.yuzoki.com/fresh/experts-follow-ai-agent-lean-anthropic-study): Anthropic’s October 2026 study found analysts sided with a Claude agent’s secret lean on 86% of key choices. What it found and how to keep your own judgment. (2026-10-29)
- [How to Use Gemini Notebook (NotebookLM) in Gemini Chat](https://www.yuzoki.com/fresh/gemini-notebook-inside-gemini-chat): From 23 October 2026, @Gemini Notebook in Gemini chat creates notebooks, adds sources and answers questions. What it does, who gets it and how to turn it on. (2026-10-29)
- [Gemini Hits One Billion Users: Alphabet Q3 2026 Results](https://www.yuzoki.com/fresh/gemini-one-billion-users-alphabet-q3): Alphabet’s Q3 2026 results: the Gemini app reached one billion users, Google Cloud grew 103% to $30.7 billion and capex hit $51.4 billion. What it all means. (2026-10-29)
- [Microsoft Voluntary Exit Offer to 60,000 Employees Explained](https://www.yuzoki.com/fresh/microsoft-voluntary-exit-offer-60000): Microsoft announced a Voluntary Exit Offer on 26 October 2026, and Bloomberg reports about 60,000 staff are eligible. What is confirmed and what to do next. (2026-10-29)
- [Sweden Government Blocks ChatGPT and Claude, Keeps Copilot](https://www.yuzoki.com/fresh/sweden-government-blocks-chatgpt-claude): Sweden's Government Offices blocked ChatGPT and Claude on staff computers on 26 October 2026 and kept Microsoft Copilot. Why, and what to ask your IT team. (2026-10-29)
- [Anthropic IPO: What the S-1 Means for Claude Users](https://www.yuzoki.com/fresh/anthropic-ipo-s1-claude-users): Anthropic filed its S-1 on 26 October 2026 to list as ANT on Nasdaq. We read the numbers and explain what the IPO means for your Claude plan, prices and data. (2026-10-28)
- [China's AI Stock Crash: What It Means for Your AI Skills](https://www.yuzoki.com/fresh/china-ai-stock-crash): China's AI stocks, led by the STAR50 index, fell about 40% in under four months. Why it happened, what the dot-com crash teaches, and what to do this week. (2026-10-28)
- [Claude Cowork in Every Chat: How to Hand Off Whole Tasks](https://www.yuzoki.com/fresh/claude-cowork-every-conversation-guide): Since September 2026, Claude Cowork works in every Claude chat. What it can do with files, browsers and scheduled tasks, and which settings to check first. (2026-10-28)
- [Claude Dashboards and Claude Motion Betas: How to Use Them](https://www.yuzoki.com/fresh/claude-dashboards-motion-beta-guide): Claude Dashboards builds charts from Salesforce and other apps, and Claude Motion turns content into MP4 explainers. See who gets each beta and how to start. (2026-10-28)
- [How to Use Claude Design, Claude Slides and Claude Docs](https://www.yuzoki.com/fresh/claude-design-slides-docs-how-to): Claude Design, Slides and Docs now work in any Claude chat, even on Free. Learn to use each one and what to move before claude.ai/design shuts on 14 December. (2026-10-28)
- [Claude Duet Explained: What It Does and How to Get It](https://www.yuzoki.com/fresh/claude-duet-proactive-agent-guide): Claude Duet is Anthropic's proactive agent, in research preview since 21 October 2026. Learn what it does, who can join the waitlist and what needs approval. (2026-10-28)
- [Claude Max, Ultra and Team API Credits: How to Claim Them](https://www.yuzoki.com/fresh/claude-max-team-monthly-api-credits): Claude Max includes $100 and Ultra $200 a month in API credits, and Team plans get up to $500. Learn how to claim them, what they cover and what to build. (2026-10-28)
- [Custom GPTs and Gems Retiring: How to Migrate to Skills](https://www.yuzoki.com/fresh/custom-gpts-gems-retiring-move-to-skills): Google turns Gems into skills on 17 November 2026 and OpenAI retires custom GPTs on 11 December. Learn what carries over, what breaks and how to migrate. (2026-10-28)
- [Google Gemini Agent for Work Explained (Gemini at Work 2026)](https://www.yuzoki.com/fresh/google-gemini-agent-for-work-explained): Google’s Gemini agent, announced 8 October 2026, runs tasks for hours inside Gmail and Docs and can get its own company email. What it does and how to prepare. (2026-10-28)
- [GPT-6 Luna, Terra, Sol and Astra Explained](https://www.yuzoki.com/fresh/gpt-6-luna-terra-sol-astra-explained): OpenAI now ships GPT-6 in four sizes: Luna, Terra, Sol and Astra. Which ChatGPT plan gets which model, what GPT-6.1 Terra adds, and how to use Intelligent UI. (2026-10-28)
- [Which Claude Model to Use: Opus 5.5, Sonnet, Haiku or Fable](https://www.yuzoki.com/fresh/which-claude-model-opus-sonnet-haiku-fable): Anthropic released Claude Fable 5.1, Opus 5.5, Sonnet 5.5 and Haiku 5.5 in autumn 2026. We compare price and speed and say which model to use for each job. (2026-10-28)

## Official profiles

- [Yuzoki on Instagram](https://www.instagram.com/yuzoki.ai/)
- [Yuzoki on LinkedIn](https://www.linkedin.com/company/yuzoki/)
- [Yuzoki on TikTok](https://www.tiktok.com/@yuzoki.ai)
- [Yuzoki on YouTube](https://www.youtube.com/@yuzoki_ai)

## Optional

- [llms-full.txt](https://www.yuzoki.com/llms-full.txt): the full text of every page and article in one file
- [Sitemap](https://www.yuzoki.com/sitemap.xml): every URL with its last change date