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

Jerry Chen

General Partner

Gerald Chen

Partner

Mike Duboe

General Partner

Roger Evans

Partner

Tom Frangione

COO

Bob Henderson

Special Limited Partner

Christine Kim

Partner

Saam Motamedi

Partner

Corinne Riley

Partner

Jason Risch

Investor

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 flexible data framework that facilitates the integration of custom data sources with large language models (LLMs). The company's central interface toolkit enables businesses to connect unstructured, structured, or semi-structured data, allowing for the creation of robust end-user applications. By providing a simple solution for augmenting LLM applications with external data, LlamaIndex empowers organizations to leverage their unique data assets effectively.

LlamaIndex

Seed Round in 2023
LlamaIndex is a developer of a flexible data framework that facilitates the integration of custom data sources with large language models (LLMs). The company's central interface toolkit enables businesses to connect unstructured, structured, or semi-structured data, allowing for the creation of robust end-user applications. By providing a simple solution for augmenting LLM applications with external data, LlamaIndex empowers organizations to leverage their unique data assets effectively.

Immigo

Pre Seed Round in 2022
Immigo is an online language learning platform designed to assist students in achieving fluency and confidence in spoken English. Recognizing the challenges faced by 1.5 billion English learners worldwide, Immigo offers a structured environment where learners can connect with peers to practice speaking. The platform employs a peer-to-peer approach, encouraging accountability among participants, which enhances the learning experience at a more affordable cost compared to traditional one-on-one classes. By leveraging small group discussions and integrating AI-powered feedback, Immigo provides an engaging and comprehensive method for language acquisition, enabling students to improve their skills effectively.

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 enhances the capabilities of intelligent systems by enabling them to understand and represent real-world information more effectively. The platform utilizes advanced personal AI technology to facilitate meaningful interactions through a conversational mobile search tool, which acts as an open index of knowledge. By incorporating probabilistic assertions alongside established facts, Ozlo provides a more nuanced understanding of information. This innovative approach allows intelligent systems to engage in longer conversations, improve conversion rates, and foster greater customer loyalty. The company comprises a team of 30 experts specializing in computational linguistics, machine learning, data science, and search technologies.

PullString

Series D in 2016
PullString, Inc. is an entertainment and technology company based in San Francisco, California, that specializes in developing interactive applications allowing users to engage in conversation with digital and physical characters. The company's primary offering, the PullString Platform, provides a comprehensive authoring environment, artificial intelligence capabilities, and conversation analytics, catering to various industries such as entertainment, customer service, gaming, and more. This platform supports major conversational channels including Facebook Messenger, Amazon Alexa, and others, enabling the creation of engaging experiences like Call of Duty’s Lt Reyes and Hello Barbie. Founded in 2011 as ToyTalk, PullString has transformed the landscape of computer conversation through its innovative blend of design and technology, allowing organizations to collaboratively develop and publish dynamic voice applications. The company rebranded to PullString in 2016 and has secured significant funding to further its mission in the realm of conversational experiences.

PullString

Series C in 2014
PullString, Inc. is an entertainment and technology company based in San Francisco, California, that specializes in developing interactive applications allowing users to engage in conversation with digital and physical characters. The company's primary offering, the PullString Platform, provides a comprehensive authoring environment, artificial intelligence capabilities, and conversation analytics, catering to various industries such as entertainment, customer service, gaming, and more. This platform supports major conversational channels including Facebook Messenger, Amazon Alexa, and others, enabling the creation of engaging experiences like Call of Duty’s Lt Reyes and Hello Barbie. Founded in 2011 as ToyTalk, PullString has transformed the landscape of computer conversation through its innovative blend of design and technology, allowing organizations to collaboratively develop and publish dynamic voice applications. The company rebranded to PullString in 2016 and has secured significant funding to further its mission in the realm of conversational experiences.

PullString

Series B in 2012
PullString, Inc. is an entertainment and technology company based in San Francisco, California, that specializes in developing interactive applications allowing users to engage in conversation with digital and physical characters. The company's primary offering, the PullString Platform, provides a comprehensive authoring environment, artificial intelligence capabilities, and conversation analytics, catering to various industries such as entertainment, customer service, gaming, and more. This platform supports major conversational channels including Facebook Messenger, Amazon Alexa, and others, enabling the creation of engaging experiences like Call of Duty’s Lt Reyes and Hello Barbie. Founded in 2011 as ToyTalk, PullString has transformed the landscape of computer conversation through its innovative blend of design and technology, allowing organizations to collaboratively develop and publish dynamic voice applications. The company rebranded to PullString in 2016 and has secured significant funding to further its mission in the realm of conversational experiences.

MindMeld

Venture Round in 2012
MindMeld, Inc. is a technology company that specializes in developing an advanced AI platform focused on creating intelligent conversational interfaces for applications and devices. Founded in 2011 and headquartered in San Francisco, the company enhances user interaction through voice interfaces and language-understanding capabilities, allowing users to engage with music, video content, weather updates, and connected home devices. MindMeld's platform employs machine learning to facilitate natural interactions with voice and chat assistants, enabling users to efficiently access and navigate information. In December 2015, the company rebranded from its original name, Expect Labs, Inc., and operates as a subsidiary of Cisco Systems, Inc. since May 2017.

PullString

Series A in 2011
PullString, Inc. is an entertainment and technology company based in San Francisco, California, that specializes in developing interactive applications allowing users to engage in conversation with digital and physical characters. The company's primary offering, the PullString Platform, provides a comprehensive authoring environment, artificial intelligence capabilities, and conversation analytics, catering to various industries such as entertainment, customer service, gaming, and more. This platform supports major conversational channels including Facebook Messenger, Amazon Alexa, and others, enabling the creation of engaging experiences like Call of Duty’s Lt Reyes and Hello Barbie. Founded in 2011 as ToyTalk, PullString has transformed the landscape of computer conversation through its innovative blend of design and technology, allowing organizations to collaboratively develop and publish dynamic voice applications. The company rebranded to PullString in 2016 and has secured significant funding to further its mission in the realm of conversational experiences.

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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