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Ondine is a voice companion application for Windows, published by Se7en AI and currently available in version 0.98.19, the single version released to date. Positioned within the voice assistant and productivity software category, Ondine allows users to interact with their computer through spoken conversation: the user speaks to the application, and it replies aloud in one of six supported languages, namely French, English, Spanish, Portuguese, German, and Italian. Beyond conversational responses, the software can control applications by voice and open real windows on the user's behalf, including YouTube, web searches, and image searches. It also retains notes and reminders, making it suitable for everyday use cases such as hands-free assistance, quick information lookups, personal organization, and multilingual voice interaction on a Windows desktop. The application itself is free of charge and requires no account with the publisher. However, its reasoning capabilities depend on an API key that the user must supply independently from an AI provider of their choice; supported providers include OpenAI, Anthropic, Google, and Groq. According to the publisher, obtaining such a key costs approximately five dollars as a one-time expense, paid directly to the chosen provider without any subscription. To simplify this setup step, Ondine guides the user through the key creation process during its first launch, walking through each stage so that no prior experience with API configuration is necessary. This design separates the free companion application from the underlying language model infrastructure, giving users freedom to select their preferred AI vendor while keeping costs transparent and usage-based. Overall, Ondine combines voice-driven application control, multilingual spoken dialogue, and lightweight note and reminder management into a single Windows utility aimed at users seeking an accessible, account-free voice assistant experience.
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