AI Investor Tracker

Index Ventures Portfolio: AI Startups Backed by Index (2025 Tracker)

Track the AI startups backed by Index Ventures, from open-source tooling to enterprise copilots and GenAI infra.

Index Ventures Portfolio: AI Startups Backed by Index (2025 Tracker)
Source: Index Ventures

Index Ventures is one of the most globally influential VC firms, and it’s making strategic, high-conviction moves in AI.

From open-source tooling to enterprise copilots and GenAI infra, this page tracks the AI startups in its growing portfolio.

Last updated: July 2025
CompanySectorFunding RoundAmount RaisedYearNotes
HarveyLegal AI / CopilotsSeries D$300M2025Participated alongside Sequoia
Hippocratic AIHealth AI / LLMsSeries B$141M2025Participated with NVentures & a16z
RedpandaAI Data PlatformSeries D$100M2025Supports real-time AI data infrastructure
Artisan AIAI Sales AgentsSeries A$25M2025AI-native agents for sales workflows
Perplexity AIAI Search EnginesSeries B$73.6M2024Index was an early backer
CohereFoundation Models (LLMs)Series C$270M2023Backed by Index alongside Nvidia
Know a startup we missed? Email us to get it added.

Top Index Ventures–Backed AI Startups (2025)

Harvey

  • Round: $300M Series D (2025)
  • Sector: Legal AI Copilot
  • What They Do: AI assistant for legal professionals to automate workflows.
  • Why It Matters: Index’s lead in transformative enterprise AI tools.

Hippocratic AI

  • Round: $141M Series B (2025)
  • Sector: Healthcare AI Agents
  • What They Do: Non-diagnostic AI agents built for patient trust and regulatory compliance.
  • Why It Matters: Signals Index’s strategic push into regulated enterprise AI.

Redpanda

  • Round: $100M Series D (2025)
  • Sector: AI Data Infrastructure
  • What They Do: Real-time streaming platform for AI pipelines.
  • Why It Matters: Building the plumbing that enables responsive AI systems.

Artisan AI

  • Round: $25M Series A (2025)
  • Sector: AI Sales Agents
  • What They Do: Autonomous agents (e.g., “Ava”) that handle prospecting, messaging, and booking.
  • Why It Matters: Embodies the rise of vertical agentic tools in enterprise workflows.

Perplexity AI

  • Round: $73.6M Series B (2024)
  • Sector: AI Search Agents
  • What They Do: Builds search agents powered by generative AI.
  • Why It Matters: Index identifying AI-native replacements for traditional search.

Cohere

  • Round: $270M Series C (2023)
  • Sector: Foundation Models / LLM Platform
  • What They Do: Offers foundational LLMs for enterprises.
  • Why It Matters: Index anchors model infrastructure that rivals the Big Tech labs.

Hebbia

  • Round: $130M Series B (2024)
  • Sector: AI Document Search / Knowledge Retrieval
  • What They Do: Natural-language neurosearch for M&A, legal, finance document workflows.
  • Why It Matters: Vertical search, law meets AI

Cradle Bio

  • Round: $73M Series B (2024)
  • Sector: Protein Engineering / Biotech AI
  • What They Do: ML-powered protein design tools for pharma R&D.
  • Why It Matters: European-gen biotech; code-to-protein AI acceleration.

Ryft

  • Round: $8M Seed (2025)
  • Sector: Enterprise Data Management
  • What They Do: Platform to manage data across AI tooling using open standards like Apache Iceberg.
  • Why It Matters: Tackles data lock-in; foundational open-data enablement layer

🛰️ What This Tells Us About Index’s AI Strategy

Index Ventures’ AI strategy focuses on picking winners across critical layers of the AI stack:

  • Enterprise AI Applications: Tools like Harvey and Artisan are redefining workflows in legal and sales.
  • AI Infrastructure: Platforms like Redpanda ensure AI workloads run efficiently.
  • Health & Safety: Hippocratic AI and Cohere focus on high-stakes AI applications — from healthcare to language models.
  • Distribution Advantages: Platforms used by devs, data teams, and enterprises daily.
  • Transatlantic firm: Index is well-positioned to bridge European AI research with US capital and scale.


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