# Index Ventures (slim)

> Index Ventures's investments in AI tools on Anchor Terminal, Anrok, Inc., Harness (formerly Augment Code), Cartesia, Check Technologies, Inc. and 26 more, with each listing's grade and the founders behind it.

- Full: https://www.anchorterminal.com/investors/index-ventures/index.md (~4,350 tokens) · this version ~4,130 tokens · JSON https://www.anchorterminal.com/investors/index-ventures/index.json · canonical https://www.anchorterminal.com/investors/index-ventures/
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-28
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Venture firm.

Website: https://www.indexventures.com

## Companies on Anchor Terminal

- **Anrok, Inc.**, Series B, April 2024
  - [Anrok](https://www.anchorterminal.com/tools/anrok.md), graded C, 61.6/100
  - Source: https://www.silicon.co.uk/press-release/anrok-raises-30m-to-be-the-tax-compliance-infrastructure-behind-the-digital-economy
- **Harness (formerly Augment Code)**, Series B, April 2024
  - [Auggie CLI](https://www.anchorterminal.com/tools/auggie.md), graded D, 51/100
  - Source: https://www.augmentcode.com/blog/augment-inc-raises-227-million
- **Cartesia**, Seed, December 2024, led a round
  - [Cartesia Ink](https://www.anchorterminal.com/tools/cartesia-ink-stt.md), graded B, 68/100
  - [Cartesia Sonic TTS API + MCP](https://www.anchorterminal.com/tools/cartesia-tts.md), graded B, 64/100
  - [Cartesia Voice Cloning API + MCP](https://www.anchorterminal.com/tools/cartesia-voice-cloning.md), graded C, 59.7/100
  - Source: https://www.cartesia.ai/blog/seed
- **Check Technologies, Inc.**, Series C, through Index
  - [Check](https://www.anchorterminal.com/tools/check-payroll.md), graded B, 67.6/100
  - Source: https://www.checkhq.com/resources/blog/series-c-announcement
- **ClickHouse**, Series B, October 2021, Series C, May 2025, Series D, January 2026
  - [ClickHouse MCP Server](https://www.anchorterminal.com/tools/clickhouse-mcp-server.md), graded B, 64.6/100
  - Source: https://clickhouse.com/blog/click-house-raises-a-250m-series-b-at-a-2b-valuationand-we-are-hiring
- **Codat Limited**, Venture round, June 2020, Series C, June 2022
  - [Codat](https://www.anchorterminal.com/tools/codat.md), graded B, 64.5/100
  - Source: https://codat.io/resources/codat-raises-10-million-to-build-a-business-data-superhighway-between-businesses-and-financial-providers/
- **Collibra**, Series G, November 2021
  - [Collibra](https://www.anchorterminal.com/tools/collibra.md), graded B, 64.7/100
  - Source: https://www.collibra.com/company/newsroom/press-releases/collibra-raises-250-million-in-funding-round-led-by-sequoia-capital-global-equities-and-sofina-more-than-doubling-its-valuation-to-5-25-billion
- **IVXS UK Limited (trading as ComplyAdvantage)**, Series C, July 2020
  - [ComplyAdvantage](https://www.anchorterminal.com/tools/complyadvantage.md), graded D, 52.7/100
  - Source: https://siliconcanals.com/london-startup-accelerating-fight-financial-crime-snaps-e42-6m-funding/
- **DeepL**, Funding round, May 2024, led a round
  - [DeepL API](https://www.anchorterminal.com/tools/deepl-api.md), graded BB, 72.1/100
  - Source: https://siliconcanals.com/deepl-secures-300m-at-2b-valuation/
- **Duffel**, Series B, October 2019, led a round
  - [Duffel Flights and Stays API](https://www.anchorterminal.com/tools/duffel.md), graded B, 66.8/100
  - Source: https://www.indexventures.com/perspectives/duffel-reinvents-infrastructure-behind-online-travel-booking/
- **Fireworks AI**, Series C, October 2025, Series D, July 2026, led a round
  - [Fireworks AI Fine-tuning](https://www.anchorterminal.com/tools/fireworks-fine-tuning.md), graded C, 59.1/100
  - Source: https://www.orrick.com/en/news/2025/11/fireworks-ai-raises-250-million-series-c-at-4-billion-valuation
- **Fireworks.ai, Inc.**, Series C, October 2025, Series D, July 2026, led a round
  - [Fireworks AI Inference](https://www.anchorterminal.com/tools/fireworks-inference.md), graded BB, 73.5/100
  - Source: https://www.orrick.com/en/news/2025/11/fireworks-ai-raises-250-million-series-c-at-4-billion-valuation
- **Fonoa Technologies Limited**, Series C, May 2026
  - [Fonoa](https://www.anchorterminal.com/tools/fonoa.md), graded D, 51.9/100
  - Source: https://www.fonoa.com/company/news/fonoa-raises-110m-funding-and-acquires-edge
- **Granola, Inc.**, Series C, March 2026, led a round
  - [Granola](https://www.anchorterminal.com/tools/granola.md), graded C, 61.6/100
  - Source: https://www.granola.ai/blog/series-c
- **Pineapple Technology Ltd. (incident.io)**, $4.7M round, September 2021, $34M round, July 2022, Series B, April 2025, led a round
  - [incident.io API](https://www.anchorterminal.com/tools/incident-io.md), graded B, 68.9/100
  - Source: https://incident.io/blog/weve-raised-34m-to-help-organisations-be-resilient
- **Intercom**
  - [Intercom API + MCP](https://www.anchorterminal.com/tools/intercom.md), graded BB, 71.6/100
  - Source: https://www.indexventures.com/companies/intercom/
- **Linear**, Seed, November 2019
  - [Linear MCP](https://www.anchorterminal.com/tools/linear-mcp.md), graded D, 53.9/100
  - Source: https://linear.app/now/linear-s-next-chapter-announcing-our-usd4-2m-seed-round
- **LiveKit Incorporated**, Series C, January 2026, led a round
  - [LiveKit Agents](https://www.anchorterminal.com/tools/livekit-agents.md), graded BB, 72.5/100
  - [LiveKit Telephony](https://www.anchorterminal.com/tools/livekit-telephony.md), graded B, 67.6/100
  - Source: https://livekit.com/blog/livekit-series-c
- **Mistral AI**, Series C, September 2025
  - [Mistral AI API](https://www.anchorterminal.com/tools/mistral-api.md), graded BB, 71.2/100
  - [Mistral Embed and Codestral Embed](https://www.anchorterminal.com/tools/mistral-embeddings.md), graded C, 58/100
  - [Mistral Moderation API](https://www.anchorterminal.com/tools/mistral-moderation.md), graded C, 58.4/100
  - [Mistral OCR API](https://www.anchorterminal.com/tools/mistral-ocr.md), graded C, 58.8/100
  - [Mistral Vibe CLI](https://www.anchorterminal.com/tools/mistral-vibe-cli.md), graded B, 63/100
  - [Mistral Voxtral Transcribe](https://www.anchorterminal.com/tools/mistral-voxtral-transcribe.md), graded B, 64.2/100
  - [Voxtral Mini 4B Realtime 2602](https://www.anchorterminal.com/tools/voxtral-mini-4b-realtime-2602.md), graded C, 60.3/100
  - Source: https://mistral.ai/news/mistral-ai-raises-1-7-b-to-accelerate-technological-progress-with-ai/
- **Optimizely**
  - [Optimizely Experimentation](https://www.anchorterminal.com/tools/optimizely.md), graded B, 62.6/100
  - Source: https://techcrunch.com/2020/09/03/episerver-acquires-optimizely/
- **Parallel Web Systems**, Series A, November 2025, Series B, April 2026, led a round
  - [Parallel Search and Task APIs](https://www.anchorterminal.com/tools/parallel-search-api.md), graded BB, 75.1/100
  - Source: https://parallel.ai/blog/series-a
- **Persona Identities, Inc.**, Series D, 2025
  - [Persona](https://www.anchorterminal.com/tools/persona.md), graded B, 69.6/100
  - Source: https://incyber.org/en/article/identity-verification-us-start-up-persona-raises-200-million/
- **Plain**, Series A, February 2025
  - [Plain API + MCP](https://www.anchorterminal.com/tools/plain.md), graded B, 65.5/100
  - Source: https://www.plain.com/blog/we-ve-raised-a-15m-series-a
- **Remote Technology, Inc.**, Series C, April 2022
  - [Remote](https://www.anchorterminal.com/tools/remote.md), graded BB, 70.8/100
  - Source: https://www.indexventures.com/perspectives/remote-secures-300-million-series-c-financing-to-power-global-employment/
- **Spendesk SAS**, Series A, Series B, September 2019, Series C, July 2021, Series C extension, January 2022, led a round
  - [Spendesk API + MCP](https://www.anchorterminal.com/tools/spendesk.md), graded B, 62.3/100
  - Source: https://www.spendesk.com/blog/weve-raised-35-million-to-transform-spending-at-work/
- **Strapi, Inc.**, Series A, May 2020, Series B, June 2022, led a round
  - [Strapi](https://www.anchorterminal.com/tools/strapi.md), graded B, 65.7/100
  - Source: https://strapi.io/blog/announcing-strapi-10m-series-a-funding
- **Stytch (Twilio)**, Seed, summer 2020, Series A, July 2021, Series B, November 2021
  - [Stytch Connected Apps](https://www.anchorterminal.com/tools/stytch-connected-apps.md), graded C, 60.8/100
  - Source: https://stytch.com/blog/announcing-our-seed-round/
- **Temporal Technologies**, Series B, February 2022, Series B-Prime, February 2023, Secondary, October 2025, Series D, February 2026, Series E, September 2026, led a round
  - [Temporal](https://www.anchorterminal.com/tools/temporal.md), graded A, 78.3/100
  - Source: https://temporal.io/news/temporal-io-raises-usd100-million-series-b-company-valuation-passes-usd1-5
- **Typeform SL**, Series C, March 2022
  - [Typeform](https://www.anchorterminal.com/tools/typeform.md), graded C, 58.4/100
  - Source: https://www.typeform.com/blog/typeform-secures-135-million-series-c-funding-led-by-sofina
- **Weaviate**, Series B, April 2023, led a round
  - [Weaviate API + MCP](https://www.anchorterminal.com/tools/weaviate.md), graded B, 68.1/100
  - Source: https://www.prnewswire.com/news-releases/weaviate-raises-50-million-series-b-funding-to-meet-soaring-demand-for-ai-native-vector-database-technology-301803296.html

## Where they invest

- Speech-to-text, 3
- Tax calculation & compliance, 2
- Agent harnesses, 2
- Identity & business verification, 2
- Model APIs & inference, 2
- Customer support & helpdesk, 2
- Text-to-speech, 1
- Voice cloning & custom voices, 1
- Payroll infrastructure, 1
- Databases & files, 1
- Accounting & invoicing, 1
- Company knowledge & data catalogues, 1
- Translation, 1
- Travel & booking, 1
- Fine-tuning, 1
- Meeting capture & meeting infrastructure, 1
- Observability & incidents, 1
- Work & productivity, 1
- Conversational voice agents, 1
- Phone calling & voice transport, 1
- Embeddings & rerankers, 1
- Guardrails & safety filters, 1
- Document parsing & extraction, 1
- Product analytics & experimentation, 1
- Web search APIs, 1
- HR & employee operations, 1
- Spend management & procurement, 1
- CMS & website publishing, 1
- Agent auth & delegated access, 1
- Human approval & handoff, 1
- Forms, surveys & structured intake, 1
- Retrieval & vector search, 1

## Founders they backed

- [Igor Ostrovsky](https://www.anchorterminal.com/people/igor-ostrovsky/), Harness (formerly Augment Code)
- [Guy Gur-Ari](https://www.anchorterminal.com/people/guy-gur-ari/), Harness (formerly Augment Code)
- [Karan Goel](https://www.anchorterminal.com/people/karan-goel/), Cartesia
- [Albert Gu](https://www.anchorterminal.com/people/albert-gu/), Cartesia
- [Arjun Desai](https://www.anchorterminal.com/people/arjun-desai/), Cartesia
- [Brandon Yang](https://www.anchorterminal.com/people/brandon-yang/), Cartesia
- [Andrew Brown](https://www.anchorterminal.com/people/andrew-brown/), Check Technologies, Inc.
- [Vivek Patel](https://www.anchorterminal.com/people/vivek-patel/), Check Technologies, Inc.
- [Eric Stromberg](https://www.anchorterminal.com/people/eric-stromberg/), Check Technologies, Inc.
- [Aaron Katz](https://www.anchorterminal.com/people/aaron-katz/), ClickHouse
- [Alexey Milovidov](https://www.anchorterminal.com/people/alexey-milovidov/), ClickHouse
- [Yury Izrailevsky](https://www.anchorterminal.com/people/yury-izrailevsky/), ClickHouse
- [Pete Lord](https://www.anchorterminal.com/people/pete-lord/), Codat Limited
- [Alex Cardona](https://www.anchorterminal.com/people/alex-cardona/), Codat Limited
- [David Hoare](https://www.anchorterminal.com/people/david-hoare/), Codat Limited
- [Felix Van de Maele](https://www.anchorterminal.com/people/felix-van-de-maele/), Collibra
- [Stijn Christiaens](https://www.anchorterminal.com/people/stijn-christiaens/), Collibra
- [Jarek Kutylowski](https://www.anchorterminal.com/people/jarek-kutylowski/), DeepL
- [Steve Domin](https://www.anchorterminal.com/people/steve-domin/), Duffel
- [Lin Qiao](https://www.anchorterminal.com/people/lin-qiao/), Fireworks AI, Fireworks.ai, Inc.
- [Benny Chen](https://www.anchorterminal.com/people/benny-chen/), Fireworks AI, Fireworks.ai, Inc.
- [Dmytro Dzhulgakov](https://www.anchorterminal.com/people/dmytro-dzhulgakov/), Fireworks AI, Fireworks.ai, Inc.
- [Pawel Garbacki](https://www.anchorterminal.com/people/pawel-garbacki/), Fireworks AI, Fireworks.ai, Inc.
- [Dmytro Ivchenko](https://www.anchorterminal.com/people/dmytro-ivchenko/), Fireworks AI, Fireworks.ai, Inc.
- [James Reed](https://www.anchorterminal.com/people/james-reed/), Fireworks AI, Fireworks.ai, Inc.
- [Chenyu Zhao](https://www.anchorterminal.com/people/chenyu-zhao/), Fireworks AI, Fireworks.ai, Inc.
- [Davor Tremac](https://www.anchorterminal.com/people/davor-tremac/), Fonoa Technologies Limited
- [Filip Sturman](https://www.anchorterminal.com/people/filip-sturman/), Fonoa Technologies Limited
- [Ivan Ivankovic](https://www.anchorterminal.com/people/ivan-ivankovic/), Fonoa Technologies Limited
- [Stephen Whitworth](https://www.anchorterminal.com/people/stephen-whitworth/), Pineapple Technology Ltd. (incident.io)
- [Pete Hamilton](https://www.anchorterminal.com/people/pete-hamilton/), Pineapple Technology Ltd. (incident.io)
- [Chris Evans](https://www.anchorterminal.com/people/chris-evans/), Pineapple Technology Ltd. (incident.io)
- [Des Traynor](https://www.anchorterminal.com/people/des-traynor/), Intercom
- [Ciaran Lee](https://www.anchorterminal.com/people/ciaran-lee/), Intercom
- [Eoghan McCabe](https://www.anchorterminal.com/people/eoghan-mccabe/), Intercom
- [David Barrett](https://www.anchorterminal.com/people/david-barrett-2/), Intercom
- [Russ d’Sa](https://www.anchorterminal.com/people/russ-d-sa/), LiveKit Incorporated
- [David Zhao](https://www.anchorterminal.com/people/david-zhao/), LiveKit Incorporated
- [Arthur Mensch](https://www.anchorterminal.com/people/arthur-mensch/), Mistral AI
- [Guillaume Lample](https://www.anchorterminal.com/people/guillaume-lample/), Mistral AI
- [Timothee Lacroix](https://www.anchorterminal.com/people/timothee-lacroix/), Mistral AI
- [Pete Koomen](https://www.anchorterminal.com/people/pete-koomen/), Optimizely
- [Parag Agrawal](https://www.anchorterminal.com/people/parag-agrawal/), Parallel Web Systems
- [Rick Song](https://www.anchorterminal.com/people/rick-song/), Persona Identities, Inc.
- [Charles Yeh](https://www.anchorterminal.com/people/charles-yeh/), Persona Identities, Inc.
- [Job van der Voort](https://www.anchorterminal.com/people/job-van-der-voort/), Remote Technology, Inc.
- [Marcelo Lebre](https://www.anchorterminal.com/people/marcelo-lebre/), Remote Technology, Inc.
- [Samar Abbas](https://www.anchorterminal.com/people/samar-abbas/), Temporal Technologies
- [Maxim Fateev](https://www.anchorterminal.com/people/maxim-fateev/), Temporal Technologies
- [Bob van Luijt](https://www.anchorterminal.com/people/bob-van-luijt/), Weaviate
- [Etienne Dilocker](https://www.anchorterminal.com/people/etienne-dilocker/), Weaviate

## Questions

### Which AI tools has Index Ventures invested in?

Anchor Terminal lists Anrok, Inc., Harness (formerly Augment Code), Cartesia, Check Technologies, Inc., ClickHouse, Codat Limited, Collibra, IVXS UK Limited (trading as ComplyAdvantage), DeepL, Duffel, Fireworks AI, Fireworks.ai, Inc., Fonoa Technologies Limited, Granola, Inc., Pineapple Technology Ltd.

### How are Index Ventures's companies graded?

On Anchor Terminal's benchmark, Anrok (C, 61.6), Auggie CLI (D, 51), Cartesia Ink (B, 68), Cartesia Sonic TTS API + MCP (B, 64), Cartesia Voice Cloning API + MCP (C, 59.7), Check (B, 67.6), ClickHouse MCP Server (B, 64.6), Codat (B, 64.5), Collibra (B, 64.7), ComplyAdvantage (D, 52.7), DeepL API (BB, 72.1), Duffel Flights and Stays API (B, 66.8), Fireworks AI Fine-tuning (C, 59.1), Fireworks AI Inference (BB, 73.5), Fonoa (D, 51.9), Granola (C, 61.6), incident.io API (B, 68.9), Intercom API + MCP (BB, 71.6), Linear MCP (D, 53.9), LiveKit Agents (BB, 72.5), LiveKit Telephony (B, 67.6), Mistral AI API (BB, 71.2), Mistral Embed and Codestral Embed (C, 58), Mistral Moderation API (C, 58.4), Mistral OCR API (C, 58.8), Mistral Vibe CLI (B, 63), Mistral Voxtral Transcribe (B, 64.2), Voxtral Mini 4B Realtime 2602 (C, 60.3), Optimizely Experimentation (B, 62.6), Parallel Search and Task APIs (BB, 75.1), Persona (B, 69.6), Plain API + MCP (B, 65.5), Remote (BB, 70.8), Spendesk API + MCP (B, 62.3), Strapi (B, 65.7), Stytch Connected Apps (C, 60.8), Temporal (A, 78.3), Typeform (C, 58.4) and Weaviate API + MCP (B, 68.1).

Investors are named from the companies' own announcements, the investors' own pages, Y Combinator's company pages, public filings and news reports of a round, each with its source.