Practise presentations and public speaking with AI
Giving a talk gets easier once you've practised speaking out loud and handling questions. ChatSim lets you rehearse with an AI that plays the audience and challenges you with questions.
- Speak out loud with the microphone and hear the AI respond
- Practise answering questions from the "audience"
- Choose how critical the audience is
- Feedback on clarity and structure
- Build your own scenario for your topic
Confidence comes from speaking out loud
Many people only read through their slides in their head. Actually saying it out loud and handling follow-up questions is what brings calm on the day.
Learn what to tighten up
You get feedback on how clear and structured you were, plus tips to sharpen your message.
Frequently asked questions
Does it cost anything?
No, ChatSim is free during beta. You connect your own AI key (OpenAI, Claude or Gemini), so there's no subscription.
Can I speak instead of typing?
Yes. You can answer by voice with the microphone and hear the AI aloud — close to a real conversation.
Can the audience ask questions?
Yes. The AI plays the audience and asks follow-up questions to practise on.
Is it good for school presentations?
Yes — school, studies and work. You describe the topic yourself.