Fello AI Blog

Lenka Vojtechova

Lenka is a content creator and digital marketing specialist with a passion for technology, AI, and storytelling. She combines creativity with a data-driven mindset to craft engaging, meaningful content that connects with readers. With experience across SEO, copywriting, and social media strategy, she helps brands turn complex ideas into clear, relatable messages. When she’s not writing, you’ll find her exploring new AI tools, enjoying a great cup of coffee, or planning her next travel adventure.

Claude Duet: What Anthropic’s Proactive Agent Does, Who Can Get It, and What It Costs
AI Basics and How-To Guides

Claude Duet: What Anthropic’s Proactive Agent Does, Who Can Get It, and What It Costs

Claude Duet is Anthropic's proactive agent app: it briefs you every morning, works on its own cloud computer and asks before it sends, pays, signs or deletes. Here…

Codex vs Cursor: Which to Use Now That OpenAI Is Leaving Cursor
AI Basics and How-To Guides

Codex vs Cursor: Which to Use Now That OpenAI Is Leaving Cursor

OpenAI plans to stop supplying its models to Cursor on 12 November 2026. Codex vs Cursor is no longer only a question of agent versus editor: it decides where you…

Claude Without Login: Can You Use It With No Account?
AI Basics and How-To Guides

Claude Without Login: Can You Use It With No Account?

No, you cannot use Claude without login on claude.ai or in Anthropic’s apps. Every account needs a phone number that can receive texts, from a supported country…

How to Lock Chats in ChatGPT (and Hide Them From Your History)
AI Basics and How-To Guides

How to Lock Chats in ChatGPT (and Hide Them From Your History)

You can now lock chats in ChatGPT. Since 20 October 2026, a locked chat disappears from your history, pinned chats and search, and opens only with a 4-digit PIN or…

What Is Grok AI? Who Owns It, What It Does and What It Costs (2026)
AI Technical Insights

What Is Grok AI? Who Owns It, What It Does and What It Costs (2026)

Grok AI is an AI chatbot and a family of large language models built by xAI, the Elon Musk company that SpaceX bought in February 2026. You use it on grok.com, in…

Claude Connectors: The 15 Best to Add in 2026 (for Work, Life and Your Mac)
AI Basics and How-To Guides

Claude Connectors: The 15 Best to Add in 2026 (for Work, Life and Your Mac)

Claude's Connectors Directory lists 986 connectors as of 20 October 2026, and every popular "best Claude connectors" list is written by a company selling one of…

Best Free AI Models in 2026: Which Ones Cost Nothing and Where to Use Them
AI Technical Insights

Best Free AI Models in 2026: Which Ones Cost Nothing and Where to Use Them

ChatGPT Free now runs GPT-6 Luna, Claude Free runs Sonnet 5.5, and since 9 October free Gemini sends most prompts to Flash-Lite. Here is every AI model you can use…

FLUX 3 Video and FLUX 3 Max: Speed, Benchmarks, Price and How to Try It
AI News

FLUX 3 Video and FLUX 3 Max: Speed, Benchmarks, Price and How to Try It

FLUX 3 Video is Black Forest Labs’ first video model, and FLUX 3 Max is the faster version fal released on 19 October 2026 . fal says Max renders a 10-second clip…

Cursor vs Claude Code: Which One Should You Pay For on a Mac?
AI Basics and How-To Guides

Cursor vs Claude Code: Which One Should You Pay For on a Mac?

Most Cursor vs Claude Code comparisons still say both cost $20 a month. Since 12 October 2026 that is wrong for anyone signing up today: Cursor now sells The X…

Claude Opus vs Sonnet: Which One to Use, and When Opus Is Worth Twice the Price
AI Technical Insights

Claude Opus vs Sonnet: Which One to Use, and When Opus Is Worth Twice the Price

Claude Opus 5.5 costs twice as much per token as Claude Sonnet 5.5, and on Anthropic's own benchmarks the two sit within a few points of each other. The real…

Grok Build: What It Is, What It Costs and How to Install It on a Mac
AI Basics and How-To Guides

Grok Build: What It Is, What It Costs and How to Install It on a Mac

Grok Build is SpaceXSI's coding agent for the terminal, and since 12 October 2026 the free tier of the X Subscription includes a limited allowance of it. Here is…

Best AI for Physics: Which Model Actually Solves It
AI Basics and How-To Guides

Best AI for Physics: Which Model Actually Solves It

The best AI for physics in October 2026 is a three-way tie at the top. Claude Opus 5.5, GPT-6 Astra and GPT-6.1 Sol all score 31.7% on CritPt, the research-level…

The Ultimate Claude Model Comparison: Claude 4 to Opus 5.5
AI Technical Insights

The Ultimate Claude Model Comparison: Claude 4 to Opus 5.5

Anthropic shipped 20 Claude models between May 2025 and October 2026. The newest flagship, Claude Opus 5.5, costs $4 / $20 per million tokens, less than a third of…

Can ChatGPT Make a PowerPoint? Yes, and Here Is Which Plan You Need
AI Basics and How-To Guides

Can ChatGPT Make a PowerPoint? Yes, and Here Is Which Plan You Need

Yes, ChatGPT can make a PowerPoint, and every plan has a way to do it. Which way depends on what you pay, from the free PowerPoint add-in up to ChatGPT Slides on…

How to Use ChatGPT on iPhone: App, Siri, Action Button and More
AI Basics and How-To Guides

How to Use ChatGPT on iPhone: App, Siri, Action Button and More

Download the free ChatGPT app from OpenAI in the App Store, sign in, and start typing or talking. The app needs iOS 18 or later. On an iPhone 15 Pro or any iPhone…

What Is Perplexity Computer? How It Works, What It Costs and Who It Is For
AI Technical Insights

What Is Perplexity Computer? How It Works, What It Costs and Who It Is For

Perplexity Computer is Perplexity's AI agent. You describe an outcome, and it splits the job across sub-agents running on more than 20 models in a cloud sandbox…

Why Is Claude So Slow? 6 Causes and the Settings That Fix Them
AI Technical Insights

Why Is Claude So Slow? 6 Causes and the Settings That Fix Them

Claude is usually slow for one of four reasons. You picked a slower model, the effort level is set high, the chat is long, or Anthropic has an incident. Check…

Best AI Storyboard Generator: 6 Tools Compared, Plus a Free Method
AI Basics and How-To Guides

Best AI Storyboard Generator: 6 Tools Compared, Plus a Free Method

Every "best AI storyboard generator" list on the first page of Google is written by a company that sells one. We compared six dedicated tools using only their own…

Claude Dashboard: How to Build One From Your Data, Step by Step
AI Basics and How-To Guides

Claude Dashboard: How to Build One From Your Data, Step by Step

Claude Dashboards turns a plain-language question about your data into a dashboard. It launched in beta on 8 October 2026 for Pro, Max, Team and Enterprise. Claude…

Does GTA 6 Use AI? What Rockstar Confirmed, and What It Didn’t
AI News

Does GTA 6 Use AI? What Rockstar Confirmed, and What It Didn’t

Rockstar and Take-Two say GTA 6 was made without generative AI: CEO Strauss Zelnick said it has zero part in the game. GTA 6 still uses game AI to run its NPCs and…

The X Subscription: What It Includes, Should You Switch, and How to Cancel
AI Basics and How-To Guides

The X Subscription: What It Includes, Should You Switch, and How to Cancel

The X Subscription replaced SuperGrok and X Premium for new customers on October 12, 2026, in five tiers from $0 to $200 a month. Here is what each tier includes…

Best Chinese AI Models in 2026: MiMo, Qwen, GLM, Kimi and DeepSeek Ranked
AI Technical Insights

Best Chinese AI Models in 2026: MiMo, Qwen, GLM, Kimi and DeepSeek Ranked

The best Chinese AI model in October 2026 is not DeepSeek. Xiaomi’s MiMo-V2.6-Pro scores 46.3 on the Artificial Analysis Intelligence Index v4.3.2, the highest of…

Apple HomeView: Price, Siri AI, and What the Fine Print Says
AI News

Apple HomeView: Price, Siri AI, and What the Fine Print Says

Apple HomeView is a $299 smart display with a 7-inch screen, an A18 chip and Siri AI built in, shipping on 13 November 2026. Apple's footnotes add three things the…

Proton Lumo AI Review: Is the Private AI Worth Using?
AI Basics and How-To Guides

Proton Lumo AI Review: Is the Private AI Worth Using?

Proton Lumo is the AI assistant built so that even the company running it cannot read your chats. It comes from Proton, the Swiss maker of Proton Mail and Proton…

Is ChatGPT Safe? The Real Risks in 2026 and What to Do About Each
AI Basics and How-To Guides

Is ChatGPT Safe? The Real Risks in 2026 and What to Do About Each

ChatGPT is safe for everyday questions and risky for a few specific jobs. Here is what happens to what you type, where the real Mac danger sits, and the eight…

Meta Muse Wonder: The Benchmarks, the Price, and Where Claude Still Wins
AI News

Meta Muse Wonder: The Benchmarks, the Price, and Where Claude Still Wins

Meta Muse Wonder launched on October 12, 2026 in two versions, and the larger one, Muse Wonder Full, wins 7 of the 14 rows on Meta’s own benchmark chart. The…

Kimi vs Claude: Which One Should You Actually Use?
AI Basics and How-To Guides

Kimi vs Claude: Which One Should You Actually Use?

Kimi vs Claude looks lopsided on paper: Claude Opus 5.5 scores 57.6 on one independent index and Kimi K3 scores 43.6. But the Claude app opens on Sonnet 5.5 at…

AI Halloween Trend: How to Do It, With 10 Copy-Paste Prompts We Tested
AI Basics and How-To Guides

AI Halloween Trend: How to Do It, With 10 Copy-Paste Prompts We Tested

The AI Halloween trend turns one selfie into a spooky photo that looks like it was found in a drawer from 2003. Here is how to do it in ChatGPT or Gemini for free…

50 Common AI Phrases, Translated (What Your Chatbot Really Means)
AI Basics and How-To Guides

50 Common AI Phrases, Translated (What Your Chatbot Really Means)

In April 2025 ChatGPT got so flattering that OpenAI had to roll the update back. The 50 common AI phrases below are what that flattery sounds like, translated into…

Kimi vs ChatGPT: Which One Should You Actually Use?
AI Basics and How-To Guides

Kimi vs ChatGPT: Which One Should You Actually Use?

Kimi vs ChatGPT is closer than the hype on either side suggests. On one independent index, the model behind ChatGPT Plus scores above Kimi K3, but K3 scores well…

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