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.

Perplexity vs Copilot: Which One Should You Actually Use?
KI-Grundlagen und Anleitungen

Perplexity vs Copilot: Which One Should You Actually Use?

Perplexity and Microsoft Copilot both answer questions from the web with citations, and both run models they did not build. The difference is who picks the model…

Claude vs Copilot in 2026: Three Copilots, Three Different Answers
KI-Grundlagen und Anleitungen

Claude vs Copilot in 2026: Three Copilots, Three Different Answers

Search for Claude vs Copilot and you get three different comparisons, because Microsoft uses the Copilot name for three different products. Two of them already let…

Der ultimative ChatGPT-Modellvergleich: GPT-5.0 bis GPT-6.1
KI-News

Der ultimative ChatGPT-Modellvergleich: GPT-5.0 bis GPT-6.1

OpenAI verkauft inzwischen vier GPT-6-Modelle, Astra seit dem 3. September 2026, GPT-6 Sol und GPT-6 Luna seit dem 22. September sowie GPT-6.1 Sol seit dem 29…

The Ultimate Gemini Model Comparison: 2.5 to Gemini 4 Argon
Technische KI-Einblicke

The Ultimate Gemini Model Comparison: 2.5 to Gemini 4 Argon

Google now runs two Gemini timelines that no longer move together. The Flash line has raced all the way to Gemini 3.8 Flash, launched September 2, 2026, while the…

ChatGPT Sites: What It Is, Who Gets It, and How to Build One
KI-Grundlagen und Anleitungen

ChatGPT Sites: What It Is, Who Gets It, and How to Build One

ChatGPT Sites turns a chat into a live website with its own link, at no extra charge on Plus, Pro, Business, Enterprise and Edu. It is not on Free or Go, and it has…

Gemini 4 Argon Is Here: Benchmarks, Price, and Why You Cannot Use It Yet
KI-News

Gemini 4 Argon Is Here: Benchmarks, Price, and Why You Cannot Use It Yet

Google announced Gemini 4 Argon on September 30, 2026, its first flagship model since Gemini 3.1 Pro. It leads several benchmarks at an introductory $2 and $10 per…

GPT-6.1 Sol Is Here: Near-Astra Power at a Fifth of the Price, but Not in Chat
KI-News

GPT-6.1 Sol Is Here: Near-Astra Power at a Fifth of the Price, but Not in Chat

OpenAI launched GPT-6.1 Sol at DevDay on 29 September 2026. It keeps GPT-6 Sol's $2 and $10 API prices, claims near-Astra results for a fifth of Astra's price, and…

AI Calorie Counter: Free Chatbot or Paid App, and How Accurate Is Either?
KI-Grundlagen und Anleitungen

AI Calorie Counter: Free Chatbot or Paid App, and How Accurate Is Either?

An AI calorie counter reads a photo of your meal and estimates the calories, but it is not accurate enough to trust meal by meal. In July 2026 an NIH team found…

Claude Docs: How to Use Anthropic's New Document Editor, Step by Step
KI-Grundlagen und Anleitungen

Claude Docs: How to Use Anthropic's New Document Editor, Step by Step

Claude Docs is the document editor Anthropic built into Claude on 16 September 2026. You ask for a doc in a conversation, Claude drafts it on screen, and you and…

OpenAI Dots at DevDay 2026: The $100 Agent and Everything Else OpenAI Announced
KI-News

OpenAI Dots at DevDay 2026: The $100 Agent and Everything Else OpenAI Announced

OpenAI announced dots at DevDay 2026 on 29 September. A dot is an always-on agent inside ChatGPT that runs on GPT-6 Astra, gets its own cloud computer and keeps…

Claude Sonnet 5.5 Is Here: Price, Benchmarks, and the Effort Setting That Decides Your Bill
KI-News

Claude Sonnet 5.5 Is Here: Price, Benchmarks, and the Effort Setting That Decides Your Bill

Anthropic released Claude Sonnet 5.5 on September 28, 2026 at the same $2 and $10 per million tokens as Sonnet 5. It nearly matches Opus 5.5 on several benchmarks…

Canva Alternatives in 2026: The Best Free and Paid Options Tested
KI-Grundlagen und Anleitungen

Canva Alternatives in 2026: The Best Free and Paid Options Tested

The strongest professional alternative to Canva now costs nothing, and Canva owns it. Affinity went free for everyone on 30 October 2025, and it is a full vector…

What Is the Best AI for Designers? Start With What You Already Pay For
KI-Grundlagen und Anleitungen

What Is the Best AI for Designers? Start With What You Already Pay For

Nielsen Norman Group gave a real design job to a batch of AI tools, and the outputs that came closest to human work were the ones handed a detailed spec or an…

Ist Canva kostenlos? Was Sie wirklich ohne Bezahlung bekommen
KI-Grundlagen und Anleitungen

Ist Canva kostenlos? Was Sie wirklich ohne Bezahlung bekommen

Ist Canva kostenlos? Ja, und es ist keine Testversion. Es ist ein dauerhafter Plan ohne Laufzeit, und er leistet weit mehr als eine Demo. Der Haken ist nicht die…

The ChatGPT Excel Add-In: Free on Every Plan, and What It Actually Costs
KI-Grundlagen und Anleitungen

The ChatGPT Excel Add-In: Free on Every Plan, and What It Actually Costs

OpenAI now ships one add-in that puts ChatGPT inside Excel, Word and PowerPoint, and it reaches the free tier. The install takes a minute. The part nobody mentions…

OpenAI Pauses Training Again: What Triggered It and What It Doesn't Stop
KI-News

OpenAI Pauses Training Again: What Triggered It and What It Doesn't Stop

OpenAI pauses training on its most capable models, and this time the trigger was a DNS lookup. On 20 September 2026 a model in training used a gap in its sandbox to…

Is Microsoft Copilot Free? What You Actually Get for Nothing
KI-Grundlagen und Anleitungen

Is Microsoft Copilot Free? What You Actually Get for Nothing

Microsoft’s own pricing page answers the question in one word, yes. The page ranking above it says there is no free tier at all. Both cannot be right, and the…

AI Tattoo Generator: Which One Is Worth It, and Who Ranks Them
KI-Grundlagen und Anleitungen

AI Tattoo Generator: Which One Is Worth It, and Who Ranks Them

Search for an AI tattoo generator and page one hands you two things: a row of tools with a prompt box, and a row of articles ranking those tools. We fetched all…

What Is Google Flow AI? Credits, Free Limits and What Veo Costs
KI-Grundlagen und Anleitungen

What Is Google Flow AI? Credits, Free Limits and What Veo Costs

Google Flow gives every account 50 credits a day, with or without a subscription. A single Veo 3.1 Quality video costs 100 credits and nothing rolls over, so there…

Perplexity Spaces: How They Work, and What Changed in 2026
KI-Grundlagen und Anleitungen

Perplexity Spaces: How They Work, and What Changed in 2026

Perplexity Spaces are persistent workspaces that hold your files, instructions and conversations in one place. Perplexity renamed them Projects, the help page URL…

Meta Muse AI Agent: What It Does, What It Costs and What It Gets Wrong
KI-News

Meta Muse AI Agent: What It Does, What It Costs and What It Gets Wrong

Meta launched Muse on 8 September 2026, and within ten days it had pushed ChatGPT off the top of the US App Store. The Meta Muse AI agent does not just answer…

Claude Marketplace: How to Add a Claude Code Plugin Marketplace (and Which One You Actually Mean)
KI-Grundlagen und Anleitungen

Claude Marketplace: How to Add a Claude Code Plugin Marketplace (and Which One You Actually Mean)

Search for Claude Marketplace and you get three different products wearing one name. Only one is the developer feature most people want, and if you have run Claude…

API Key vs Subscription: What Your $20 Actually Buys
KI-Grundlagen und Anleitungen

API Key vs Subscription: What Your $20 Actually Buys

You pay $20 a month for ChatGPT or Claude, and then a Mac app asks for an API key. That is not a bug and it is not a second charge for the same thing. Here is what…

BottleCap AI: The Prague Lab Teaching Qwen to Think Less, Now on Your Mac
KI-News

BottleCap AI: The Prague Lab Teaching Qwen to Think Less, Now on Your Mac

BottleCap AI, the Prague startup co-founded by word2vec author Tomáš Mikolov, has released a Mac-native build of its newest model. On 24 September 2026 it published…

Xiaomi MiMo Explained: What V2.6 Is, What It Costs, and How to Use It
KI-News

Xiaomi MiMo Explained: What V2.6 Is, What It Costs, and How to Use It

Xiaomi MiMo is Xiaomi’s family of open-weight AI models, and on 21 September 2026 it took the top spot among open models. The flagship, MiMo-V2.6-Pro, is a…

NotebookLM Prompts: How to Write Them, and Why Yours Get Refused
Prompt Engineering

NotebookLM Prompts: How to Write Them, and Why Yours Get Refused

NotebookLM prompts fail for a reason no prompt list explains: the model answers only from the sources you upload, and refuses what it cannot ground in them. Here is…

Grok vs Claude: Which AI Is Actually Better in 2026?
KI-Grundlagen und Anleitungen

Grok vs Claude: Which AI Is Actually Better in 2026?

Grok 4.7 and Claude Opus 5.5 both shipped in the same week, and the gap between them widened. Grok is still cheaper per token, but on the tasks independent testers…

ElevenLabs Pricing 2026: Plans, Credits & Real Cost Per Minute
KI-Grundlagen und Anleitungen

ElevenLabs Pricing 2026: Plans, Credits & Real Cost Per Minute

ElevenLabs has six public plans running from $0 to $990 a month, and the sticker price is the easy part. What trips people up is the credit system underneath it…

Meta AI vs ChatGPT: What the Free One Actually Costs
KI-Grundlagen und Anleitungen

Meta AI vs ChatGPT: What the Free One Actually Costs

Every comparison of Meta AI vs ChatGPT on the first page of Google tells you that Meta AI runs Llama 4. It does not. Meta’s own assistant page says Meta AI is…

GPT-6 Sol and GPT-6 Luna Are Here: OpenAI Just Halved Its API Prices
KI-News

GPT-6 Sol and GPT-6 Luna Are Here: OpenAI Just Halved Its API Prices

OpenAI launched GPT-6 Sol and GPT-6 Luna on 22 September 2026 and cut API prices in half. The catch is where you can actually use them today.

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