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.

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

Qwen vs ChatGPT: Which One Should You Actually Use?

Qwen vs ChatGPT is closer than most comparisons admit. Alibaba's Qwen3.8 Max scores 45.4 on the Artificial Analysis Intelligence Index against 47.6 for GPT-6 Sol…

iPad mini OLED: Price, Release Date, and the 512GB AI Catch
AI News

iPad mini OLED: Price, Release Date, and the 512GB AI Catch

Apple announced the iPad mini OLED on 26 October 2026 at $699, with an 8.5-inch OLED screen and the A20 Pro chip. Only the $999 512GB model gets the full chip with…

Why Is Gemini So Slow? How to Tell If It Is Google or You, and the Fixes
Frequently Asked Questions

Why Is Gemini So Slow? How to Tell If It Is Google or You, and the Fixes

Gemini is usually slow for one of four reasons. Google has a problem, you are on a deeper model or a high thinking level, the chat has grown long, or you asked for…

Google AI Studio: What It Is, What’s Free, and How It Differs From the Gemini App
AI Basics and How-To Guides

Google AI Studio: What It Is, What’s Free, and How It Differs From the Gemini App

Google AI Studio is Google’s free, browser-based workspace for testing Gemini models, getting a Gemini API key and building apps. Its free tier includes Gemini 4…

ChatGPT Cloudflare Error: How to Fix “Unblock challenges.cloudflare.com” and Verification Loops
Frequently Asked Questions

ChatGPT Cloudflare Error: How to Fix “Unblock challenges.cloudflare.com” and Verification Loops

When ChatGPT says “Please unblock challenges.cloudflare.com to proceed” or keeps asking you to verify you are human, your account is fine. ChatGPT sits behind…

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

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

The AI Christmas photo trend turns one selfie into a festive portrait that keeps your real face, from a candy cane studio shoot to a Norman Rockwell painting. Here…

AI Carbon Footprint: What One Prompt, Image, Video and Model Really Emit
AI News

AI Carbon Footprint: What One Prompt, Image, Video and Model Really Emit

The AI carbon footprint of one text prompt is somewhere between 0.03 and 1.14 grams of CO₂e, depending on who does the counting. Here is why the numbers disagree by…

NotebookLM vs ChatGPT: Which One Should Hold Your Documents?
AI Basics and How-To Guides

NotebookLM vs ChatGPT: Which One Should Hold Your Documents?

A free Gemini Notebook, the tool Google called NotebookLM until 16 July 2026, holds 50 sources in one notebook. A free ChatGPT Project holds 5 files. That tenfold…

Kimi K3.1 Pro: Moonshot’s Cheaper, Stronger K3, Explained
AI News

Kimi K3.1 Pro: Moonshot’s Cheaper, Stronger K3, Explained

Moonshot AI released Kimi K3.1 Pro on 23 October 2026, and it costs less than the model it replaces: $2 per million input tokens and $10 per million output, down…

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 November 2026 is Claude Fable 5.2, at 35.7% on CritPt, the research-level physics test that Artificial Analysis runs. Claude Opus 5.5…

The Ultimate Claude Model Comparison: Claude 4 to Fable 5.2
AI Technical Insights

The Ultimate Claude Model Comparison: Claude 4 to Fable 5.2

Anthropic shipped 22 Claude models between May 2025 and November 2026. The most capable, Claude Fable 5.2, costs $8 / $40 per million tokens, and Claude Opus 5.5…

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…

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