PHNTM One: A Private, Offline AI Assistant for Your Desk

Research Context and Background

PHNTM One is a dedicated physical AI assistant built by Jacob DeCamp at DeCampLabs. It is a hand-assembled device that runs entirely on local hardware, meaning it does not need to send your data to the cloud. The device features a Raspberry Pi 5 processor with 8 GB of RAM inside a case with a 10.1-inch touchscreen. It comes with a one-time payment price of $799 and includes free shipping within the US. The core of the system runs Google's open-weights Gemma 3 4B model locally, allowing it to function without an internet connection for most tasks.

Benefits

PHNTM One offers several key advantages for users who value privacy and ownership. First, it operates in a private mode by default, ensuring that all conversations, notes, and document searches stay on the device. Users have full control over their data and can export it to a USB drive if needed. Second, the device includes a unique tutoring feature called PHNTM Tutor. This tool teaches users how to find answers rather than just giving them the answer. It covers 71 skills across five subjects, with a strong focus on math, and is available in English, Italian, and Spanish. Third, the assistant can search through your local files, including PDFs and scanned documents, providing answers with specific citations to the source material. Finally, the device is bootstrapped by a solo maker, which means it is built to order and includes a 30-day return policy for peace of mind.

Use Cases

PHNTM One is designed for individuals and families who want a private AI assistant for daily tasks. It works well as a personal tutor for students learning math or other subjects. The PHNTM Missions feature helps users complete projects like building a birdhouse or restoring a bicycle by guiding them through verified steps. It is also useful for anyone who needs to search through their own documents, such as manuals or research papers, without worrying about data leaving their home. The device supports voice interaction through a tap-to-talk microphone and can even be accessed via a phone app over a home network. It is particularly suitable for people in low-connectivity environments or those who prefer owning their hardware and software completely.

Pricing

PHNTM One is priced at $799. This is a one-time payment with no recurring subscription fees. The purchase includes free shipping within the United States. The company also offers a 30-day return policy, allowing customers to return the device if it does not meet their needs.

Vibes

Reviews and public reception highlight the device as a significant entry in the AI market for those prioritizing privacy. Users appreciate the transparency of the project, noting that parts lists and unedited transcripts are publicly available. The device has been described as a niche but important tool for data sovereignty. While some users note that response times can be slower compared to cloud-based alternatives, the ability to run entirely offline and keep data private is seen as a major benefit. The community response has been positive regarding the honesty of the product, especially since the developer has stated that the device will continue to work even if the company were to disappear.

Additional Information

PHNTM One is developed by Jacob DeCamp, a solo maker based in the United States. The company is bootstrapped, meaning it has not taken outside investment. Each unit is hand-built to order and undergoes a mandatory 72-hour burn-in test before shipping. The project emphasizes resilience and transparency, with all technical details available on the official website. The device is not suitable for smart-home control or image generation, and it trades some speed for privacy. Performance benchmarks from late 2026 show that warm answers take about 19 seconds to start, while the first question may take up to 94 seconds.