# Cartesia

> Low-latency voice AI company with deep state-space and hierarchical H-Net model research.

## Why it is interesting

Co-founder Christopher Ré also coauthored Stanford's NCM paper. Cartesia's 2025–2026 H-Net and Mamba research is highly relevant to efficient hierarchical modeling, but it is not the NCM project.

## Profile

- **Latest funding:** Follow-on financing (Series B in some reports; A-II in others) — $100M (October 29, 2025)
- **Latest known valuation:** Not publicly disclosed
- **Total disclosed equity funding:** $191M
- **Stage:** series-b
- **Status:** private
- **Industries:** N/A
- **Coverage:** full
- **Last updated:** 2026-11-13
- **Latest funding investors:** Kleiner Perkins, Index Ventures, Lightspeed Venture Partners, NVIDIA

## Key facts

- $27M seed (Dec 2024) and $64M Series A (Mar 2025): company primary sources
- $100M October 2025 follow-on: independently reported, series nomenclature varies
- October 2026 H-Net paper argues learned hierarchical representations reduce training compute in selected comparisons

## Funding history

- Follow-on financing (Series B in some reports; A-II in others) · $100M · October 29, 2025
  Source: https://research.contrary.com/report/cartesia
- Series A · $64M · March 11, 2025
  Source: https://www.cartesia.ai/blog/series-a
- Seed · $27M · December 12, 2024
  Source: https://www.cartesia.ai/blog/seed

**By:** [Venture Capital Tracker](https://venturecapitaltracker.com/editorial-policy)
**Last updated:** November 13, 2026

**Editorial note:** AI tools assisted with research, structure, or drafting. Venture Capital Tracker retains human editorial responsibility for factual accuracy, relevance, and source quality before publication.

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Source: https://venturecapitaltracker.com/startup/cartesia