Startups

Galileo focuses on machine learning and data science within the technology industry. The company offers a platform for the development and evaluation of applications that handle unstructured data, providing tools for prompt engineering, data fine-tuning, and real-time monitoring of outputs. Galileo's services are primarily utilized by data science teams across various sectors. It was founded in 2021 and is based in San Francisco, California.

Braintrust is a technology company that builds a platform for developing AI applications within the artificial intelligence sector. The company provides tools for evaluating and managing large linguistic models, including prompt management, performance tracking, and dataset management. Braintrust's solutions include features such as real-time execution trace visualization, monitoring, and the option for self-hosting to meet data control and compliance needs. It was founded in 2023 and is based in San Francisco, California.

Arize provides tools for AI observability and LLM evaluation within the machine learning and artificial intelligence sectors. The company offers a platform for monitoring, diagnosing, and improving the performance of AI models and applications in production. Arize's tools are based on open-source standards and can integrate with existing AI infrastructure. It was founded in 2020 and is based in Mill Valley, California.

Fiddler focuses on artificial intelligence (AI) observability and responsible AI governance in the technology sector. The company provides services such as monitoring, explainable AI, and analytics to support the performance and integrity of machine learning models and large language models. Fiddler serves sectors that need AI governance and risk management, including government and financial services. It was founded in 2018 and is based in Palo Alto, California.

LatticeFlow AI focuses on the compliance of artificial intelligence (AI) applications within the defense operations sector. The company provides a platform that ensures AI applications are functional and follow regulatory standards, emphasizing the validation, acceleration, automation, compliance, and monitoring of AI systems. LatticeFlow AI serves sectors that require AI trust, risk, and security management, such as defense and compliance-focused industries. It was founded in 2020 and is based in Zurich, Switzerland.

Patronus AI focuses on automated AI evaluation and security within the AI development sector. The company provides a platform that allows enterprise teams to score the performance of large language models (LLMs), generate adversarial test cases, and benchmark AI systems. Patronus AI serves sectors that require AI evaluation and security measures, including the tech and enterprise AI industries. Patronus AI was formerly known as Zeno AI. It was founded in 2023 and is based in Dublin, California.

Distributional focuses on artificial intelligence (AI) testing within the technology sector. The company offers a platform for AI testing and evaluation, aiming to make AI systems safe, robust, and reliable. It primarily serves the enterprise sector. It was founded in 2023 and is based in Berkeley, California.

Langfuse focuses on LLM engineering. It provides tools for observability and improvement of LLM applications. The company offers services including metrics, evaluations, prompt management, and a playground to debug and enhance LLM apps. Langfuse is designed to work with any model or framework. It was founded in 2022 and is based in Berlin, Germany.

Helicone is an open-source generative AI platform for developers in the technology sector. The company offers a suite of tools for building, deploying, and scaling AI applications, including monitoring, data collection, fine-tuning, and evaluations. Helicone primarily serves startups and enterprises in the tech industry. It was founded in 2022 and is based in San Francisco, California.

Evaluation and Tracking for LLM Experiments and AI Agents

Kaizen focuses on browser automation technology and robotics services, operating in the technology and manufacturing sectors. The company provides integrations that enable automation of website interactions, including session management and anti-bot measures, as well as supporting data synchronization and system integrations for business applications. Kaizen also delivers robotic systems and sources parts for manufacturing needs. It was founded in 2025 and is based in San Francisco, California.

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