c't Working with AI

The special issue of c't KI-Praxis provides tests and practical instructions for working with chatbots. It explains why language models make mistakes and how they can be minimised. This not only helps when you send questions and orders to one of the chatbots offered online.

If you do not want to or are not allowed to use the cloud services for data protection reasons, for example, you can also set up your own voice AI. The c't editorial team explains where to find a suitable voice model, how to host it locally and which service providers can host it.

The fact that generative AI is becoming increasingly productive harbours both opportunities and risks. Suitable rules for the use of AI in schools, training and at work help to exploit opportunities and minimise risks.



c't magazin für computertechnik is the most subscribed computer title in Europe. For over 40 years, c't has been characterised by thematically diverse, technically sound and editorially independent journalism. Over 80 experts regularly report on current developments in the IT sector and scrutinise the latest hardware and software in the c't test lab.



Online, c't offers computer professionals and discerning users a comprehensive collection of tips and tricks for PC use, samples from magazine articles, comprehensive services and information about the magazine (e.g. research in the magazine archive). This service is rounded off by a dedicated forum.



Run your own voice AI

Apart from ChatGPT, you can find thousands of open and free language models on Hugging Face. We show you how to set up your first own language model and customise its inputs and outputs with prompts.

6 free language models to experiment with

12 Operating free language AIs without the cloud

20 Falcon-7B language AI in Google Colab

24 Hosting your own language AI



Recognising the limits of language models

Why do language models say so much nonsense and what kind of data are they actually trained with? And what about copyright? We analyse the AI researchers' papers and provide some insight.

28 Why language models make a lot of mistakes

34 How benchmarks measure language AIs

40 Interview: Language AIs need

human testers

42 Quality problems in AI training

48 Avoiding the mistakes of voice AIs

54 How to expose chatbots

60 c't readers fool Bard and ChatGPT



Use language models

You can only speak in English and need an assistant for tedious search, writing and programming tasks? We compare research, translation and office assistants.

66 What ChatGPT plug-ins can do

72 How ChatGPT helps with programming

76 English writing assistants put to the test

84 SoftMaker Office now with AI connection

90 Voice AI explains research work

Editing images and audio

AI programmes transcribe recordings and speak texts. Midjourney also calculates photorealistic images. We compare the providers and provide tips for creative professionals.

98 Artistic styles with Midjourney

106 Recognising fake images generated with AI

114 AI voices in the test

122 Transcribe speech locally with Whisper