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AssemblyAI
AssemblyAI is a San Francisco speech-AI company that builds and serves models turning audio and video into accurate text, plus higher-level 'audio intelligence' like summaries, sentiment, speaker labels, and PII redaction. Founded in 2017 by Dylan Fox, it sells a developer-first API used to add transcription, real-time streaming, and voice-agent capabilities to software. The company has raised more than $113M across seed to Series C and reports processing over a million hours of audio a day for customers ranging from startups to large enterprises.
Credal.ai
Credal.ai is a New York-based enterprise AI startup building a control plane for company AI agents. Founded in 2022 by two former Palantir engineers, its platform connects internal company data - from Google Drive and Slack to Salesforce - to large language models while strictly enforcing existing user permissions, redacting sensitive data, and logging every prompt and action. Credal lets regulated enterprises build, govern, and deploy AI agents and MCP servers without leaking data or breaking compliance rules.
Raindrop
Raindrop is a San Francisco applied-AI company building the monitoring and observability platform for AI agents - often described as 'Sentry for AI agents.' It traces production agent runs, automatically detects silent failures like hallucinations, loops, and broken tools, and uses small custom models to surface behavioral signals such as user frustration. Founded in 2023 by Zubin Koticha, Alexis Gauba, and Ben Hylak, the company raised a $15M seed round led by Lightspeed in December 2025 and counts Replit, Speak, Clay, Framer, and AngelList among its customers.
VoiceOps
VoiceOps is a New York-based AI company that turns customer conversations into structured, decision-ready intelligence. Its platform listens to every call, email, SMS, and chat a B2C business handles, then automatically grades quality, flags compliance risks, coaches reps, and surfaces the patterns that separate top performers from everyone else - no manual prompt-writing required. Founded in 2016 out of Y Combinator, VoiceOps started as a coaching tool for call-center sales teams and has grown into a broader conversation-intelligence agent used by companies in lending, healthcare, education, and home services.