Rebel Fund

Rebel Fund, established in 2019 and headquartered in San Francisco, California, is a venture capital firm specializing in seed-stage investments. It focuses on technology startups, primarily in the United States, with a particular interest in education, training services, information technology, and healthcare sectors. The firm leverages a network of Y Combinator alumni and a proprietary machine learning algorithm to predict startup success and inform investment decisions.

John Adler III

Partner

Jared Heyman

Managing Partner

Steve Huffman

Partner

Daniel Kan

Partner

Richard Sussman

Co-Founder and Strategic Partner

Past deals in Language Processing

Confident AI

Seed Round in 2025
Confident AI is a developer of an evaluation platform focused on improving Large Language Model (LLM) applications within the field of artificial intelligence. The company's platform provides advanced metrics and real-time feedback, allowing AI developers and organizations in technology and research to effectively monitor and enhance the performance of their systems. Additionally, Confident AI offers customizable dataset generation, which aids in optimizing LLM applications for accuracy and alignment with specific goals. Through its innovative tools, the company plays a crucial role in enhancing the efficacy of AI development.

Relvy

Seed Round in 2024
Relvy AI is a software development company specializing in AI-driven issue detection and resolution. It develops AI agents that automatically identify and debug software problems before they escalate, enhancing development teams' efficiency and workflows. Notably, Relvy's platform employs small language models and does not rely on user data for training, ensuring privacy and data security.

Vanan Online Services

Seed Round in 2022
Vanan Online Services is a global provider of language support services, catering to both individual and business clients. The company specializes in a wide range of services, including audio and video transcription, certified translation, closed captioning, subtitling, document typing, and legal typing. Additionally, Vanan offers audio voiceover, video animation, and video editing services.

Typewise

Seed Round in 2022
Typewise AG is a Swiss deep tech company established in 2019 and headquartered in Binningen, Switzerland. It specializes in developing innovative text prediction technology and offers a range of products aimed at enhancing communication efficiency. The flagship product, the Typewise Keyboard, is an award-winning app available for iOS and Android that supports over 30 languages and includes features like a custom dictionary and predictive text capabilities, specifically catering to users in multilingual contexts, including support for Hinglish. Additionally, Typewise provides an AI Writing Assistant, a browser-based tool designed to improve the speed and quality of written communication, particularly for customer service and sales teams. The company also offers a Text Prediction API that allows developers to integrate its advanced text prediction capabilities into their own applications, thereby enhancing user experience and productivity. With nearly 2 million installations of its keyboard app, Typewise aims to make everyday communication easier and more efficient.

Outloud.ai

Seed Round in 2021
Outloud.ai is a developer of voice automation software that specializes in enhancing customer interactions in the hospitality sector, particularly in drive-thru restaurants. The company's technology leverages artificial intelligence to replicate human voices, manage informal language, and comprehend various conversational contexts. Outloud.ai's solutions are designed to operate effectively in noisy environments, allowing businesses to automate voice conversations with their customers. This innovation aims to streamline communication processes and improve operational efficiency within the industry.
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