Best Natural Language Processing Companies in San Francisco, United States
The 48 best Natural Language Processing companies in San Francisco, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Poolside.
Ranked: Best Natural Language Processing companies in San Francisco
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Poolside 🦄 Developer of artificial intelligence models and systems for software engineering | $626M | 22 mo ago | — | Jason Warner Co-Founder & Co-CEO | TurbopackSentryZendesk+14 | — | 3 launchs · 1 award |
| 2 | Meltwater Cloud based suite of marketing solutions | $340M | 31 mo ago | 3 | Jorn Lyseggen Co-Founder | PrismicAtlassian Jira Issue CollectorZendesk+30 | — | — |
| 3 | Primer AI based text summarization and contextualization software tool | $237M | 38 mo ago | 194 194 → 118 (-39%) | Diwakar Awasthi CEO | WordPressApple iCloud MailGoogle Workspace+34 | — | — |
| 4 | Sobot Contact center solution provider | $191M | 53 mo ago | — | Yi Xu Co-Founder & CEO | Node.jsSvelteVue.js+12 | — | — |
| 5 | AssemblyAI Provider of speech to text solutions | $115M | 32 mo ago | 39 | Dylan Fox Founder & CEO | WebflowSentryZendesk+23 | — | 1 launch · 1 partnership |
| 6 | Augment Developer of an AI teammate for logistics and knowledge management 57AI top 8%Funding top 21%Growth top 35%Talent top 38% All 10 signals ▾AItop 8% Fundingtop 21% Growthtop 35% Talenttop 38% Moattop 42% Techtop 49% Globalbottom 44% Patentsbottom 39% Innovationbottom 36% Marketbottom 35% AI: Classified as an agentic-AI company Funding: Raised $110M across 2 rounds · 2 rounds over 1 yrs (2.0/yr) rank vs industry peers · Fliar Intelligence Index 57/100 | $110M | 11 mo ago | — | Harish Abbott Co-Founder & CEO | Framer SitesApple iCloud MailReact+21 | 2 patents AI-driven signal processing for stress monitoring and real-time conversational analytics | 1 launch |
| 7 | Chorus.ai Conversational intelligence platform for sales | $100M | 72 mo ago | 90 | Russell Levy Co-Founder & CTO | Apple iCloud MailJavaEnvoy+17 | 37 patents Disinfection/decontamination hardware and gas-sensing technologies for environmental safety | — |
| 8 | Syllable Provider of an AI-based digital assistant for healthcare communication system | $86M | 51 mo ago | 46 | Sarel Jooste Co-Founder | Apple iCloud MailGoogle WorkspaceNode.js+12 | — | — |
| 9 | Rasa Developer of a platform for building and deploying AI agent solutions | $71M | 29 mo ago | 26 | Alexander Weidauer Co-Founder | WebflowApple iCloud MailGoogle Workspace+29 | — | — |
| 10 | Voiceflow Provider of a platform to build and scale AI agent solutions | $38M | 35 mo ago | 73 | Andrewe Lawrence Co-Founder | WebflowSentryZendesk+28 | — | — |
| 11 | VoiceBase Provider of call center analytics solutions | $32M | 126 mo ago | 28 | Walter Bachtiger Co-Founder & CEO | WordPressMySQLPHP+31 | 6 patents Speech transcription, analytics, and anonymization platform for audio media content | — |
| 12 | LynxCare Provider of real-world data infrastructure and insights for healthcare and life sciences | $26M | 49 mo ago | 50 | Dries Hens Co-Founder | WebflowSentryWistia+26 | — | 1 job opening |
| 13 | TalkIQ Cloud based platform offering speech analytics solutions | $21M | 106 mo ago | 148 | — | — | 3 patents Assessing and scoring conversational AI call quality using speech analytics | — |
| 14 | Skai Provider of an omnichannel platform for commerce media that centralizes data and optimizes marketing… | $20M | 148 mo ago | 637 | Nir Cohen Co-Founder & CTO | WordPress Block EditorWordPressApple iCloud Mail+27 | 17 patents Access control, identity management, and distributed graph database orchestration platforms | 1 partnership · 1 award |
| 15 | MindMeld Conversational AI platform for deep-domain voice interfaces and chatbots | $15M | 139 mo ago | 37,497 | Timothy Tuttle CEO and Founder | VarnishGitHub PagesAmazon Web Services+7 | 5 patents Real-time multimodal conversational AI and collaborative communication interfaces | — |
| 16 | AppOrchid Provider of AI-based applications for IoT devices | $14M | 27 mo ago | 129 129 → 159 (+23%) | Krishna Kumar Founder & CEO | Webflow EcommerceWebflowcore-js+15 | — | — |
| 17 | Ross Intelligence AI powered legal research platform | $13M | 106 mo ago | — | Jimoh Ovbiagele Co-Founder | — | — | — |
| 18 | Recruit Bot Provider of an AI-powered platform to streamline and improve talent acquisition | $11M | 33 mo ago | 14 14 → 11 (-21%) | — | WordPressMySQLPHP+32 | — | — |
| 19 | Omneky Provider of AI-powered platform for ad creation, management, and optimization | $10M | 44 mo ago | 50 | Hikari Senju Founder & CEO | WebflowThree.jsStripe+24 | — | — |
| 20 | FileTrail Provider of information governance and management software | $10M | 54 mo ago | 41 | — | — | — | — |
| 21 | Sensible Platform leveraging natural language processing to extract data from multiple documents | $8M | 44 mo ago | 11 | Josh Lewis Co-Founder & CEO | WebflowAmazon ALBAmazon Web Services+26 | 6 patents Electrical cable connectors and sheet handling/measurement devices for mailing and printing systems. | — |
| 22 | Refuel Provider of a platform using LLMs to transform enterprise data | $5M | 37 mo ago | 6 | Nihit Desai Co-Founder & CTO | — | — | — |
| 23 | Willow Voice Provider of AI-powered voice dictation software for all applications | $5M | 9 mo ago | — | Ian Ye Co-Founder | Framer SitesReactTikTok Pixel+18 | — | 3 launchs |
| 24 | Akto Platform offering API security solution | $4M | 45 mo ago | 10 | Ankush Jain Co-Founder & CTO | Framer SitesYouTubeReact+22 | — | — |
| 25 | Vocode Provider of AI-based voice interfaces | $3M | 30 mo ago | 4 | Kian Hooshmand Co-Founder | Node.jsKaTeXRadix UI+13 | — | — |
| 26 | MonkeyLearn AI powered text analytics platform for enterprises | $3M | 73 mo ago | 3 | — | Intercom ArticlesNode.jsReact+11 | — | — |
| 27 | Plasticity NLP APIs and solutions for understanding and extracting information from text | $140K | 97 mo ago | 6 | — | — | — | — |
| 28 | Buildt Platform offering AI powered code explanation software | $125K | 37 mo ago | 9 | — | — | — | 1 partnership |
| 29 | Meru Productions Developer of AI-powered tools for nursing documentation and schedule management | $125K | 37 mo ago | 6 | Rohan Arora Founder | — | — | — |
| 30 | Outloud Provider of AI-powered solutions for optimizing restaurant operations and revenue | $125K | 59 mo ago | 2 | Sasha Miagkyi Co-Founder | MUIReactJSS+4 | — | — |
| 31 | ScopeAI Customer feedback analytics and conversation management platform | $120K | 101 mo ago | — | Natalie Abeysena Co-Founder & CEO | — | — | — |
Top 12 Natural Language Processing companies in San Francisco
#1
Series A · San Francisco, California · founded 2024$110Mraised▾
Developer of an AI teammate for logistics and knowledge management. The AI teammate handles tasks such as calling, emailing, and logging into systems. It extracts and retains knowledge from communications, building a knowledge base. The AI teammate integrates with existing communication channels and adapts to business needs. It assists sales teams, improves margins, boosts productivity, and speeds up invoicing.
- Sep 2025Series A$85M
- Mar 2025Seed$25M
#2
Poolside 🦄Series B · San Francisco, California · founded 2023$626Mraised▾
Developer of artificial intelligence models and systems for software engineering. It builds models purpose-built to excel at software engineering. It allows models to learn through trial and error, navigating ambiguity to discover solutions. The intelligence understands architecture, development processes, and how software reflects business. It delivers intelligence that integrates across the entire development ecosystem.
- Oct 2024Series B$500M
- Aug 2023Series A$100M
- May 2023Seed$26M
#3
Seed · San Francisco, California · founded 2024$5Mraised▾
Provider of AI-powered voice dictation software for all applications. This software offers fast and accurate speech-to-text conversion, adapting to individual speaking styles and automatically correcting errors and formatting text. It supports multiple languages and works seamlessly across various platforms and applications, eliminating the need for copying and pasting. The software prioritizes user privacy with end-to-end encryption. Custom dictionaries can be added to increase accuracy. Background noise is filtered to ensure clear transcription, even in quiet environments.
- Nov 2025Seed$4.5M
- Jun 2025Seed$500K
#4
Acquired · San Francisco, California · founded 2001 · 3 employees$340Mraised▾
Cloud based suite of marketing solutions. It is an online intelligence platform that offers social media monitoring, tracking, and analytics for businesses. It offers media, social, and consumer trends datasets to analyze and generate insights. The platform offers social listening tool to capture brand mention and understand customers through social data. Features include social media management, analytics, influencer marketing, and more.
- Dec 2023Post IPO$65M
- Mar 2019Conventional Debt$175M
- Feb 2017Conventional Debt$60M
- Aug 2014Conventional Debt$40M
#5
Series C · San Francisco, California · founded 2016 · 26 employees$71.4Mraised▾
Developer of a platform for building and deploying AI agent solutions. The platform extends large language models with structured flows and deterministic logic. It offers tools for managing conversations, retrieving information, and coordinating agents. The platform supports multiple languages and integrates with existing systems for automating interactions. It provides solutions for customer experience, support, sales, and operational efficiency.
- Feb 2024Series C$30M
- Dec 2021Series B$3.5M
- Mar 2021Series B$6.5M
- Jul 2020Series B$1M
#6
Series C · San Francisco, California · founded 2017 · 39 employees$115Mraised▾
Provider of speech-to-text solutions. It offers API and SDK to integrate speech recognition features into applications or hardware devices for transcription. Its solution can also be deployed via the cloud and on-premise approach. It claims that its engine can understand multiple industry-specific keywords and phrases without additional training.
- Dec 2023Series C$50M
- Jul 2022Series B$30M
- Mar 2022Series A$28M
- 2017Seed$120K
#7
Series D · San Francisco, California · founded 2015 · 194 employees$237Mraised▾
Primer develops a text analytics solution that uses a combination of supervised and unsupervised machine learning models to ingest large quantities of textual data and provide summaries of what it deems the most important information. It uses 6 computational engines to help it summarize and contextualize data. Primer claims that its platform is used by government agencies and Fortune 50 companies.
- Jun 2023Series D$69M
- Jun 2021Series C$110M
- May 2020Series B$3.7M
- Nov 2018Series B$40M
#8
Series C · San Francisco, California · founded 2013 · 129 employees$14.2Mraised▾
Provider of AI-based applications for IoT devices. It claims of using natural language processing to extract and blend structured data from the Internet of things and uses Big data technologies to identify patterns, risks, and opportunities.
- May 2024Series C$43M
- Dec 2022Series B$6.2M
- Oct 2022Conventional Debt$7.5M
- Nov 2020Series A$2.5M
#9
Series D · San Francisco, California · founded 2014$190.7Mraised▾
Contact center solution provider. It is a contact center solution provider that offers voice, live chat, chatbot, and ticketing system products. It also provides WhatsApp API integration and have customer stories and product documentation available as resources.
- Feb 2022Series D$100M
- Apr 2021Series C$30.8M
- Apr 2020Series C$28.7M
- Apr 2018Series C$23.8M
#10
Series A · San Francisco, California · founded 2018 · 73 employees$38.5Mraised▾
Provider of a platform to build and scale AI agent solutions. The platform enables users to design, test, and deploy AI-powered voice and chat agents. It offers tools for automating customer support and building in-app copilots. The platform allows integration with existing systems and provides templates for agent building. It supports collaboration across teams to develop AI products.
- Aug 2023Series A$15M
- Jul 2021Series A$20M
- Nov 2019Seed—
- Apr 2019Seed$3M
#11
Series C · San Francisco, California · founded 2016 · 46 employees$85.6Mraised▾
Provider of an AI-based digital assistant for healthcare communication system. The products of eth company include Syllable Voice Assistant, Syllable Web Assistant andCOVID-19 Vaccine Command Center. It uses natural language processing and machine-learned models to interact with patients and provide information and healthcare services over the website or mobile apps. It also provides ontologies for physician specialties and expertise, human diseases, and medical conditions.
- Apr 2022Series C$40M
- Jun 2021Series B$28M
- Sep 2018Series A$13.3M
- Mar 2017Seed$4.3M
#12
Seed · San Francisco, California · founded 2017 · 14 employees$11.2Mraised▾
Provider of an AI-powered platform to streamline and improve talent acquisition. The platform offers candidate search, automated outreach, and end-to-end analytics. It integrates with existing application tracking systems to enhance functionality. The platform helps recruiters source candidates and personalize communication.
- Oct 2023Seed$4M
- Jul 2023Seed$8.2M
- Jul 2022Seed$4.6M
- 2022Seed$3M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Natural Language Processing coverage by sub-theme.
Regulatory-risk over time flat
Funding & growth over time
funding flat · growth flat
How research on Natural Language Processing is moving in the United States
A read on the academic research around Natural Language Processing — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 5,087 United States-affiliated papers.
- Stanford University209
- Carnegie Mellon University173
- Google170
- University of Washington104
- Johns Hopkins University97
- Language model19→149
- Semantics (computer science)25→119
- Benchmark (surveying)24→113
- Key (lock)2→86
- Feature (linguistics)18→95
- Language model7→74
- Context (archaeology)15→59
- Generative grammar3→46
- Key (lock)3→43
- Task (project management)28→61
- Language model1→65
- Feature (linguistics)1→35
- Context (archaeology)8→40
- Key (lock)1→31
- Semantics (computer science)2→30
Where nlp is researched across United States
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Who's filing nlp patents in the United States
United States nlp patent filing is accelerating — 3,366 filings from 1,105 assignees (2016–2025), led by IBM, Microsoft, Google; annual filings 265→347.
- IBM1054
- Microsoft271
- Google206
- Amazon145
- Oracle107
- Salesforce COM102
- Xerox79
- BANK Of America70
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.