Startups > Delphi

Delphi

Delphi helps creators and experts scale personalized interactions through AI digital cloning.

Series A $18.7M total Founded 2022 San Francisco, California 27 employees

Delphi is an AI platform that creates digital clones of real people—capturing their knowledge, personality, reasoning, and opinions—enabling 1-on-1 personalized interactions at scale via text, voice, and video. It uses adaptive temporal knowledge graphs to build a 3D model of how someone thinks, not just what they know. The platform serves creators, coaches, executives, and experts who want to scale their influence and expertise without replicating themselves. What sets Delphi apart is its focus on authenticity: only the actual person can create their digital mind (verified by ID), guardrails prevent hallucination, and users maintain full control of their data.

Problem solved

High-value individuals (coaches, consultants, executives) cannot scale personalized advice and mentorship without cloning themselves or creating generic chatbots that misrepresent their thinking.

Target customer

Individual creators, coaches, business consultants, executives, authors, and thought leaders with substantial existing audiences who want to monetize expertise and scale 1-on-1interactions.

Website LinkedIn Crunchbase Twitter / X

Founders

Dara Ladjevardian

CEO & Co-Founder

Previously founded and sold Friday (AI shopping assistant), worked as Forward Deployed Engineer at C3 AI and Product Engineer at OpenStore; studied Physics, Computer Science, and Math at Georgetown University.

Sam Spelsberg

Co-Founder

Funding history

Seed $2.7M September 2023 Led by Unknown · Unknown

Series A $16M June 24, 2025 Led by Sequoia Capital · Menlo Ventures, Anthropic's Anthology Fund, Proximity Ventures (Olivia Wilde and Santigold), Crossbeam (Michael Ovitz), Parable, Abstract Ventures, 49Palms, Gokul Rajaram, Soleio, Lenny Rachitsky, Lux Capital, MVP Ventures, founders of Zoom, YouTube, DoorDash, Lyft

Total raised: $18.7M

Industries

Education Software

Pricing

Freemium model: Free plan (basic features, 100K training words), Builder ($99/mo), Scaler ($399/mo, includes CRM sync and pro voice), Immortal (custom pricing, concierge-tier with team collaboration).

Notable customers

Lenny Rachitsky (newsletter writer), Koya Webb (wellness coach), Brian Halligan (HubSpot CEO), Vanessa Marin (sex therapist), Brian Tracy (motivational speaker), Matthew Hussey (dating coach), Sequoia Capital (internal use)

Integrations

HubSpot, Salesforce, CRM sync, real-time voice calling, affiliate revenue streams (Rewardful, Clickbank), HubSpot Marketing Automation

Tech stack

React (JavaScript frameworks) Linkedin Insight Tag (Analytics) Google Analytics (Analytics) Facebook Pixel (Analytics) HSTS (Security) Apple iCloud Mail (Webmail) Google Workspace (Email) Cloudflare (CDN) HubSpot (Marketing automation) Twitter Ads (Advertising) DoubleClick Floodlight (Advertising) Google Tag Manager (Tag managers) Framer Sites (Page builders) Vercel (PaaS) Rewardful (Affiliate programs) Clickbank (Affiliate programs) Wootric (Customer data platform)

Website

delphi.ai/

Competitors

Character.AI

Character.AI focuses on fictional characters and entertainment; Delphi emphasizes authentic digital representations of real people with identity verification and guardrails against impersonation.

Generic AI chatbot platforms

Most competitors lack voice and video cloning capabilities; Delphi differentiates with multimodal interaction that sounds and looks like the original person.

Why this matters: Delphi represents a shift toward authentic AI personalization for the creator economy. With backing from Sequoia and investors like Anthropic, it's pioneering digital cloning as a legitimate revenue stream for experts and creators. The 5X retention lift for voice-first users and early traction with high-profile creators (coaches generating 7-figure revenue) suggest this model has real product-market fit.

Best for: Creators, coaches, consultants, and executives who want to monetize expertise by offering 24/7 personalized advice through AI-powered digital versions of themselves.

Use cases

Coaches Scaling Personalized Advice

Dating and wellness coaches (e.g., Matthew Hussey, Koya Webb) offer subscribers 24/7 access to personalized guidance through their digital mind, generating significant recurring revenue without additional time investment. The AI responds to questions in the coach's voice and reasoning style, maintaining authentic advisory relationships at scale.

Newsletter Writers Building Community

Newsletter creators like Lenny Rachitsky allow readers to ask follow-up questions on topics covered in their writing, deepening engagement and gathering qualitative insights for future content. This turns passive readers into interactive community members while reducing response burden on the creator.

Internal Corporate Knowledge Capture

Organizations like Sequoia Capital use Delphi internally to preserve and scale the expertise of key team members (e.g., design partner James Buckhouse). Founders and employees can access these digital minds for mentoring on storytelling, decision-making, and strategy without requiring real-time availability.

Alternatives

Character.AI Better for creating fictional characters and entertainment bots; Delphi is purpose-built for monetizing real people's expertise with identity verification and authenticity guarantees.

Hugging Face General-purpose ML platform for building custom models; requires technical expertise, lacks voice/video cloning and monetization features built into Delphi.

OpenAI Custom GPTs Allows custom AI behavior but no voice/video cloning, limited to text, no built-in monetization or CRM integration, and less focused on personal authenticity.

FAQ

What does Delphi do? +

Delphi creates AI digital clones of real people by capturing their knowledge, personality, and reasoning patterns. Users can then scale personalized interactions with their audience via text, voice, and video, allowing customers to ask questions and receive answers as if they were talking to the real person. The platform uses adaptive temporal knowledge graphs to build a 3D model of how someone thinks.

How much does Delphi cost? +

Delphi offers a free plan to get started, Builder at $99/month, Scaler at $399/month (includes CRM sync and pro voice), and Immortal at custom pricing for concierge-tier service. Pricing varies by feature set and scale of audience.

What are alternatives to Delphi? +

Character.AI (fictional character focus), OpenAI Custom GPTs (text-only, limited personalization), and Hugging Face (technical, open-source ML platform). None match Delphi's voice/video cloning, identity verification, or monetization features.

Who uses Delphi? +

Primarily individual creators, coaches, consultants, authors, and executives with existing audiences. Notable users include Lenny Rachitsky (newsletter writer), Matthew Hussey (dating coach), Koya Webb (wellness coach), Brian Halligan (HubSpot CEO), and Sequoia Capital (internal use).

How does Delphi compare to Character.AI? +

Character.AI focuses on creating entertaining fictional characters; Delphi specializes in authentic digital representations of real people. Delphi requires identity verification, includes voice and video cloning (which Character.AI lacks), has built-in monetization tools, and maintains strict guardrails against hallucination. Character.AI is better for entertainment, Delphi for expertise scaling.