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AI tools & models

ChatGPT, Claude, Gemini and co. compared: which models and tools fit which business use case.

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Article · 8/13/2026

Self-Hosting an LLM: What It Costs, What It Takes and When It Pays Off

GPU or cloud? Ollama, vLLM or Open WebUI? An honest cost comparison and decision guide for companies considering running their own LLM.

Read → André Hellmann
Article · 8/10/2026

Open Source LLMs Explained: DeepSeek, Qwen, Llama & Mistral

Which open AI models exist, what they can do, and how they stack up against Claude, ChatGPT & Co.? A factual overview for companies.

Read → André Hellmann
Article · 7/30/2026

Microsoft Copilot: AI Woven Deep Into Microsoft 365

Microsoft Copilot brings AI straight into Word, Excel, Teams, and Outlook. What it does, what it costs, and what EU data owners need to know about the Flex Routing change.

Read → André Hellmann
Article · 7/27/2026

Google Gemini: AI from the search engine giant

Gemini lives inside Gmail, Docs, and Sheets, no extra license required. What Google Gemini delivers for business, and what applies to data processing in Workspace.

Read → André Hellmann
Article · 7/23/2026

OpenAI and ChatGPT: the market leader under the microscope

ChatGPT is the world's most-used AI tool. What GPT-5.5 actually delivers, what ChatGPT Enterprise costs, and where the limits are for business.

Read → André Hellmann
Article · 7/20/2026

Anthropic and Claude: what's behind the safest AI model?

Constitutional AI, strong analytical capabilities, and transparent data privacy: what sets Anthropic and Claude apart for business use, and where the limits are.

Read → André Hellmann
Article · 7/16/2026

Claude, ChatGPT, Gemini, Copilot & Co.: AI tools compared

Claude, ChatGPT, Gemini, Copilot & Co. compared: strengths, data privacy and costs. Which AI tool fits which job in business use.

Read → André Hellmann
Article · 6/26/2026

What AI Providers Do With Your Data: Privacy Terms Compared

ChatGPT, Claude, Gemini, Copilot: who trains on your inputs, who doesn't? The decisive difference sits between consumer and business tiers. A sober comparison.

Read → André Hellmann
Article · 6/15/2026

The Trillion-Dollar Paradox: Why AI Explodes on the Stock Market and Never Reaches the P&L

A $965B valuation for Anthropic, and 90% of companies without a measurable productivity effect (NBER, 2026). The Implementation Gap sits in between.

Read → André Hellmann

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