Index Ventures Portfolio: AI Startups Backed by Index (2026 Tracker)
Track the AI startups backed by Index Ventures, from open-source tooling to enterprise copilots and GenAI infra.
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
| Company | Sector | Latest Round | Amount Raised | Year | Notes |
|---|---|---|---|---|---|
| Harvey | Legal AI / Enterprise Copilots | Series D | $300M | 2025 | Participated alongside Sequoia |
| Hippocratic AI | Healthcare AI Agents | Series B | $141M | 2025 | Participated with NVentures and a16z |
| Redpanda | AI Data Infrastructure | Series D | $100M | 2025 | Real-time streaming backbone for AI pipelines |
| Artisan AI | AI Sales Agents | Series A | $25M | 2025 | Autonomous agents for outbound sales workflows |
| Perplexity AI | AI Search / Knowledge Agents | Series B | $73.6M | 2024 | Index Ventures was an early backer |
| Cohere | Foundation Models / Enterprise LLMs | Series C | $270M | 2023 | Enterprise-focused alternative to Big Tech models |
| Hebbia | AI Document Search / Knowledge Retrieval | Series B | $130M | 2024 | Neurosearch for legal, finance, and M&A workflows |
| Cradle Bio | Biotech AI / Protein Engineering | Series B | $73M | 2024 | ML-powered protein design for pharma R&D |
| Ryft | Enterprise Data Management | Seed | $8M | 2025 | Open data management using Apache Iceberg standards |
Know a startup we missed? Email us to get it added.
Top Index Ventures–Backed AI Startups (2026)
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
Index Ventures’ AI Strategy Signals
Index Ventures’ AI strategy focuses on picking winners across critical layers of the AI stack:
- Vertical-first enterprise AI: Harvey, Hebbia, and Artisan show conviction in tools that replace professional workflows.
- Infrastructure under the hood: Redpanda and Ryft highlight bets on the data plumbing powering real-time AI systems.
- Regulated & high-trust domains: Healthcare (Hippocratic) and biotech (Cradle) reflect long-horizon, defensible AI adoption.
- Transatlantic firm: Index is well-positioned to bridge European AI research with US capital and scale.
Related Investor Trackers
- a16z AI Portfolio: Startups Backed by Andreessen Horowitz
- NVentures Portfolio: AI Startups Backed by Nvidia
- Thrive Capital Portfolio: AI Startups Backed by Thrive
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