CSM 1B — Free AI Chat on Rewind.ai
Chat with CSM 1B for free — no signup, no credit card. Sesame's CSM 1B runs in your browser on Rewind.ai, with pay-as-you-go tokens and full API access.
What is CSM 1B?
CSM 1B is a conversational speech model from Sesame. It accepts text input and produces English speech output, with voice options spanning conversational and read-speech styles. At 1B parameters, it is suited for dialogue-oriented applications such as voice assistants and interactive agents.
How does CSM 1B work?
Type your message in the box above and CSM 1B replies instantly — no setup required. Your chat history is saved locally in your browser; sign up free to sync it across devices and get an extra 10,000 tokens. You can switch between CSM 1B and other models at any time from the picker at the top.
Is CSM 1B free?
CSM 1B is a premium model: it runs on tokens from a token pack or paid plan (from $5). The free daily tokens (2,500 a day, 5,000 with a free account) cover Rewind's free models, so you can try the site at no cost.