Greylock

Greylock, established in 1965, is a venture capital firm headquartered in Menlo Park, California, with additional offices in San Francisco and Wellesley, Massachusetts. The firm specializes in investing in consumer and enterprise software companies at various stages, from seed to growth. Greylock focuses on backing entrepreneurs who define new markets, with notable investments including Airbnb, Facebook, and LinkedIn. The firm typically invests between $0.05 million and $200 million per company, aiming to take a board seat in its portfolio companies. Greylock's investment focus spans across the United States, India, China, Europe, and Israel.

Jacob Andreou

General Partner

Joseph Ansanelli

Partner

Gerald Chen

Partner

Jerry Chen

General Partner

Mike Duboe

General Partner

Roger Evans

Partner

Tom Frangione

COO

Lee Haney

Partner and Head of CXO Partnerships

Bob Henderson

Special Limited Partner

Christine Kim

Partner

Saam Motamedi

Partner

Corinne Riley

Partner

Jason Risch

Partner

Seth Rosenberg

General Partner

Dave Strohm

Partner

Don Sullivan

Administrative Partner

David Thacker

Venture Partner

Past deals in Language Processing

LlamaIndex

Series A in 2025
LlamaIndex is a developer of a central interface toolkit that enhances large language model (LLM) applications by integrating external data. The company provides a flexible data framework that allows businesses to connect various custom data sources, including unstructured, structured, and semi-structured data. This capability enables the seamless development of powerful end-user applications, facilitating the effective utilization of LLMs in diverse business contexts.

Responsiv

Seed Round in 2023
Responsiv is a developer of an AI-driven legal knowledge platform aimed at in-house legal teams. The platform is designed to provide quick access to legal information and answers through natural language processing, delivering reference-backed responses. It allows users to generate legal clauses, templates, and policies, drawing from a comprehensive array of high-quality source materials. By utilizing Responsiv's technology, clients can reduce their reliance on external legal counsel and enhance their confidence in legal references, streamlining their operations and improving efficiency in managing legal tasks.

LlamaIndex

Seed Round in 2023
LlamaIndex is a developer of a central interface toolkit that enhances large language model (LLM) applications by integrating external data. The company provides a flexible data framework that allows businesses to connect various custom data sources, including unstructured, structured, and semi-structured data. This capability enables the seamless development of powerful end-user applications, facilitating the effective utilization of LLMs in diverse business contexts.

Immigo

Pre Seed Round in 2022
Immigo is an online language learning platform designed to assist English learners in improving their fluency and confidence in spoken English. Recognizing the challenges faced by 1.5 billion English learners globally, Immigo offers a structured environment where students can enroll in small group courses with peers, facilitating effective practice at a lower cost compared to traditional one-on-one classes. The platform employs a peer-to-peer approach, encouraging accountability among learners while utilizing interactive small group discussions and AI-powered feedback to enhance the learning experience. This innovative model addresses the limitations of self-learning apps and large group classes, providing a comprehensive solution for those seeking to master the English language.

Syllable

Seed Round in 2017
Syllable is a technology company that develops a platform designed to enhance communication between patients and healthcare providers through text and voice interactions. The platform enables patients to access vital healthcare information regarding primary care, specialty referrals, vaccinations, and general practice, facilitating guidance outside of traditional clinical settings. Additionally, Syllable focuses on building AI agents and managing AI operations, integrating tools and services from third-party providers of large language models and AI technologies, which further supports its mission to improve patient-provider communication.

Ozlo

Venture Round in 2016
Ozlo is an integrated knowledge platform that enables intelligent systems to better understand and interact with the real world. By leveraging personal AI technology, Ozlo's platform serves as an open index of knowledge, facilitating meaningful conversations and task performance for users throughout their day. The company's innovative approach combines probabilistic assertions with established facts, creating a more nuanced model of knowledge. This enhances the ability of intelligent systems to engage in longer conversations, improve conversion rates, and foster customer loyalty. With a team of 30 experts in areas such as computational linguistics, machine learning, and data science, Ozlo is positioned at the forefront of developing smart, conversational AI solutions.

PullString

Series D in 2016
PullString, Inc. is an entertainment and technology company based in San Francisco, California, that specializes in creating interactive applications for computer conversation with characters. Founded in 2011 and originally known as ToyTalk, the company offers the PullString Platform, which combines design and artificial intelligence to enable the development of conversation-based narratives across various media. This platform supports a wide range of applications, including voice and text interactions on major conversational platforms such as Facebook Messenger and Amazon Alexa. PullString's technology is utilized in diverse sectors, including entertainment, customer service, and gaming, allowing companies to create engaging conversational experiences. Notable projects include interactive characters like Hello Barbie and experiences related to popular franchises such as Call of Duty. The company focuses on empowering users to design, prototype, and publish engaging voice applications effectively.

PullString

Series C in 2014
PullString, Inc. is an entertainment and technology company based in San Francisco, California, that specializes in creating interactive applications for computer conversation with characters. Founded in 2011 and originally known as ToyTalk, the company offers the PullString Platform, which combines design and artificial intelligence to enable the development of conversation-based narratives across various media. This platform supports a wide range of applications, including voice and text interactions on major conversational platforms such as Facebook Messenger and Amazon Alexa. PullString's technology is utilized in diverse sectors, including entertainment, customer service, and gaming, allowing companies to create engaging conversational experiences. Notable projects include interactive characters like Hello Barbie and experiences related to popular franchises such as Call of Duty. The company focuses on empowering users to design, prototype, and publish engaging voice applications effectively.

PullString

Series B in 2012
PullString, Inc. is an entertainment and technology company based in San Francisco, California, that specializes in creating interactive applications for computer conversation with characters. Founded in 2011 and originally known as ToyTalk, the company offers the PullString Platform, which combines design and artificial intelligence to enable the development of conversation-based narratives across various media. This platform supports a wide range of applications, including voice and text interactions on major conversational platforms such as Facebook Messenger and Amazon Alexa. PullString's technology is utilized in diverse sectors, including entertainment, customer service, and gaming, allowing companies to create engaging conversational experiences. Notable projects include interactive characters like Hello Barbie and experiences related to popular franchises such as Call of Duty. The company focuses on empowering users to design, prototype, and publish engaging voice applications effectively.

MindMeld

Venture Round in 2012
MindMeld, Inc. is a technology company that specializes in developing an advanced AI platform designed to create intelligent conversational interfaces for applications, devices, and websites. Founded in 2011 and headquartered in San Francisco, California, MindMeld's platform enhances voice interfaces with capabilities such as question-answering and language understanding. This allows users to engage with various content, including music and video, check weather updates, and control connected home devices. The company aims to facilitate more natural interactions between users and technology through machine learning, enabling conversational assistants to comprehend user queries and provide relevant information efficiently. In December 2015, MindMeld rebranded from its former name, Expect Labs, and became a subsidiary of Cisco Systems, Inc. in May 2017.

PullString

Series A in 2011
PullString, Inc. is an entertainment and technology company based in San Francisco, California, that specializes in creating interactive applications for computer conversation with characters. Founded in 2011 and originally known as ToyTalk, the company offers the PullString Platform, which combines design and artificial intelligence to enable the development of conversation-based narratives across various media. This platform supports a wide range of applications, including voice and text interactions on major conversational platforms such as Facebook Messenger and Amazon Alexa. PullString's technology is utilized in diverse sectors, including entertainment, customer service, and gaming, allowing companies to create engaging conversational experiences. Notable projects include interactive characters like Hello Barbie and experiences related to popular franchises such as Call of Duty. The company focuses on empowering users to design, prototype, and publish engaging voice applications effectively.

SDL

Series E in 2007
SDL plc is a global technology company that specializes in language and content management solutions. It operates through three segments: Language Services, Language Technologies, and Content Technologies. The company offers a range of products, including web content management systems, structured content management solutions, and translation management platforms. These solutions enable businesses to deliver their content consistently across multiple languages, accelerating time-to-market and reducing costs. SDL serves a diverse range of industries, including aerospace, automotive, financial services, and healthcare. The company has over 50 offices worldwide and is headquartered in Maidenhead, UK. In 2020, SDL was acquired by RWS Holdings plc.

SDL

Series E in 2006
SDL plc is a global technology company that specializes in language and content management solutions. It operates through three segments: Language Services, Language Technologies, and Content Technologies. The company offers a range of products, including web content management systems, structured content management solutions, and translation management platforms. These solutions enable businesses to deliver their content consistently across multiple languages, accelerating time-to-market and reducing costs. SDL serves a diverse range of industries, including aerospace, automotive, financial services, and healthcare. The company has over 50 offices worldwide and is headquartered in Maidenhead, UK. In 2020, SDL was acquired by RWS Holdings plc.

SDL

Series E in 2005
SDL plc is a global technology company that specializes in language and content management solutions. It operates through three segments: Language Services, Language Technologies, and Content Technologies. The company offers a range of products, including web content management systems, structured content management solutions, and translation management platforms. These solutions enable businesses to deliver their content consistently across multiple languages, accelerating time-to-market and reducing costs. SDL serves a diverse range of industries, including aerospace, automotive, financial services, and healthcare. The company has over 50 offices worldwide and is headquartered in Maidenhead, UK. In 2020, SDL was acquired by RWS Holdings plc.

SDL

Series D in 2003
SDL plc is a global technology company that specializes in language and content management solutions. It operates through three segments: Language Services, Language Technologies, and Content Technologies. The company offers a range of products, including web content management systems, structured content management solutions, and translation management platforms. These solutions enable businesses to deliver their content consistently across multiple languages, accelerating time-to-market and reducing costs. SDL serves a diverse range of industries, including aerospace, automotive, financial services, and healthcare. The company has over 50 offices worldwide and is headquartered in Maidenhead, UK. In 2020, SDL was acquired by RWS Holdings plc.

SDL

Series B in 2000
SDL plc is a global technology company that specializes in language and content management solutions. It operates through three segments: Language Services, Language Technologies, and Content Technologies. The company offers a range of products, including web content management systems, structured content management solutions, and translation management platforms. These solutions enable businesses to deliver their content consistently across multiple languages, accelerating time-to-market and reducing costs. SDL serves a diverse range of industries, including aerospace, automotive, financial services, and healthcare. The company has over 50 offices worldwide and is headquartered in Maidenhead, UK. In 2020, SDL was acquired by RWS Holdings plc.

SDL

Series A in 1999
SDL plc is a global technology company that specializes in language and content management solutions. It operates through three segments: Language Services, Language Technologies, and Content Technologies. The company offers a range of products, including web content management systems, structured content management solutions, and translation management platforms. These solutions enable businesses to deliver their content consistently across multiple languages, accelerating time-to-market and reducing costs. SDL serves a diverse range of industries, including aerospace, automotive, financial services, and healthcare. The company has over 50 offices worldwide and is headquartered in Maidenhead, UK. In 2020, SDL was acquired by RWS Holdings plc.
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