# Addition (slim)

> Addition's investments in AI tools on Anchor Terminal, Airwallex, Anthropic, Hugging Face (with Zhongguancun Academy and the Telethon Institute of Genetics and Medicine), Anthropic, PBC and 7 more, with each listing's grade and the founders behind it.

- Full: https://www.anchorterminal.com/investors/addition/index.md (~1,850 tokens) · this version ~1,730 tokens · JSON https://www.anchorterminal.com/investors/addition/index.json · canonical https://www.anchorterminal.com/investors/addition/
- 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.addition.com

## Companies on Anchor Terminal

- **Airwallex**, Series G, December 2025, Series H, June 2026, led a round
  - [Airwallex Spend and Issuing](https://www.anchorterminal.com/tools/airwallex.md), graded B, 68.3/100
  - Source: https://www.airwallex.com/global/newsroom/awx-raises-usd330m-series-g-at-usd8b-valuation-establishes-sf-as-dual-global-hq
- **Anthropic**, Series G, February 2026
  - [Claude API](https://www.anchorterminal.com/tools/anthropic-api.md), graded BB, 77.3/100
  - [Claude Agent SDK](https://www.anchorterminal.com/tools/claude-agent-sdk.md), graded BB, 70.1/100
  - [Claude Code](https://www.anchorterminal.com/tools/claude-code.md), graded C, 59.9/100
  - Source: https://www.anthropic.com/news/anthropic-raises-30-billion-series-g-funding-380-billion-post-money-valuation
- **Hugging Face (with Zhongguancun Academy and the Telethon Institute of Genetics and Medicine)**, Series C, May 2022
  - [Carbon-X](https://www.anchorterminal.com/tools/carbon-x.md), graded C, 61/100
  - Source: https://huggingface.co/blog/series-c
- **Anthropic, PBC**, Series G, February 2026
  - [Claude Duet](https://www.anchorterminal.com/tools/claude-duet.md), graded F, 17.9/100
  - Source: https://www.anthropic.com/news/anthropic-raises-30-billion-series-g-funding-380-billion-post-money-valuation
- **Hugging Face, Inc.**, Series C, May 2022
  - [Hugging Face Inference Endpoints](https://www.anchorterminal.com/tools/hugging-face-inference-endpoints.md), graded B, 64.7/100
  - Source: https://huggingface.co/blog/series-c
- **Merge**, Series B, October 2022
  - [Merge Accounting API](https://www.anchorterminal.com/tools/merge-accounting.md), graded BB, 70.2/100
  - Source: https://www.merge.dev/blog/announcing-merges-55-million-series-b
- **Merge API, Inc.**, Series B, October 2022
  - [Merge Agent Handler](https://www.anchorterminal.com/tools/merge-agent-handler.md), graded B, 69.6/100
  - Source: https://www.merge.dev/blog/announcing-merges-55-million-series-b
- **Render Services, Inc.**, Series A, November 2021, Series B, June 2023, Series C, January 2025, Series C extension, February 2026, led a round
  - [Render MCP Server](https://www.anchorterminal.com/tools/render-mcp-server.md), graded B, 63.6/100
  - Source: https://render.com/blog/render-series-a
- **Hugging Face**, Series C, May 2022
  - [SmolLM3-3B](https://www.anchorterminal.com/tools/smollm3-3b.md), graded C, 61/100
  - Source: https://huggingface.co/blog/series-c
- **Temporal Technologies**, Seed, Series A, October 2020, Series B, February 2022, Series B-Prime, February 2023, through Addition Ventures
  - [Temporal](https://www.anchorterminal.com/tools/temporal.md), graded A, 78.3/100
  - Source: https://temporal.io/news/temporal-raises-usd18-75m-series-a-increases-total-raised-to-usd25-5m
- **TrueLayer**, Series D, April 2021, led a round
  - [TrueLayer](https://www.anchorterminal.com/tools/truelayer.md), graded B, 62.2/100
  - Source: https://truelayer.com/newsroom/announcements/seriesd-fundraise-rewiring-finance/

## Where they invest

- Open-weight models, 2
- Spend management & procurement, 1
- Model APIs & inference, 1
- Agent frameworks & SDKs, 1
- Agent harnesses, 1
- Personal assistants, 1
- GPU & serverless compute, 1
- Accounting & invoicing, 1
- Agent tool access, 1
- Cloud & infrastructure, 1
- Human approval & handoff, 1
- Bank data & open banking, 1

## Founders they backed

- [Jack Zhang](https://www.anchorterminal.com/people/jack-zhang/), Airwallex
- [Lucy Yueting Liu](https://www.anchorterminal.com/people/lucy-yueting-liu/), Airwallex
- [Jacob Dai](https://www.anchorterminal.com/people/jacob-dai/), Airwallex
- [Max L.](https://www.anchorterminal.com/people/max-l/), Airwallex
- [Ki Lok Wong](https://www.anchorterminal.com/people/ki-lok-wong/), Airwallex
- [Dario Amodei](https://www.anchorterminal.com/people/dario-amodei/), Anthropic
- [Daniela Amodei](https://www.anchorterminal.com/people/daniela-amodei/), Anthropic
- [Tom Brown](https://www.anchorterminal.com/people/tom-brown/), Anthropic
- [Jack Clark](https://www.anchorterminal.com/people/jack-clark/), Anthropic
- [Jared Kaplan](https://www.anchorterminal.com/people/jared-kaplan/), Anthropic
- [Sam McCandlish](https://www.anchorterminal.com/people/sam-mccandlish/), Anthropic
- [Chris Olah](https://www.anchorterminal.com/people/chris-olah/), Anthropic
- [Clément Delangue](https://www.anchorterminal.com/people/clement-delangue/), Hugging Face (with Zhongguancun Academy and the Telethon Institute of Genetics and Medicine), Hugging Face, Inc., Hugging Face
- [Julien Chaumond](https://www.anchorterminal.com/people/julien-chaumond/), Hugging Face (with Zhongguancun Academy and the Telethon Institute of Genetics and Medicine), Hugging Face, Inc., Hugging Face
- [Thomas Wolf](https://www.anchorterminal.com/people/thomas-wolf/), Hugging Face (with Zhongguancun Academy and the Telethon Institute of Genetics and Medicine), Hugging Face, Inc., Hugging Face
- [Karan Ahuja](https://www.anchorterminal.com/people/karan-ahuja/), Anthropic, PBC
- [Shensi Ding](https://www.anchorterminal.com/people/shensi-ding/), Merge, Merge API, Inc.
- [Gil Feig](https://www.anchorterminal.com/people/gil-feig/), Merge, Merge API, Inc.
- [Anurag Goel](https://www.anchorterminal.com/people/anurag-goel/), Render Services, Inc.
- [Samar Abbas](https://www.anchorterminal.com/people/samar-abbas/), Temporal Technologies
- [Maxim Fateev](https://www.anchorterminal.com/people/maxim-fateev/), Temporal Technologies

## Questions

### Which AI tools has Addition invested in?

Anchor Terminal lists Airwallex, Anthropic, Hugging Face (with Zhongguancun Academy and the Telethon Institute of Genetics and Medicine), Anthropic, PBC, Hugging Face, Inc., Merge, Merge API, Inc., Render Services, Inc., Hugging Face, Temporal Technologies and TrueLayer backed by Addition.

### How are Addition's companies graded?

On Anchor Terminal's benchmark, Airwallex Spend and Issuing (B, 68.3), Claude API (BB, 77.3), Claude Agent SDK (BB, 70.1), Claude Code (C, 59.9), Carbon-X (C, 61), Claude Duet (F, 17.9), Hugging Face Inference Endpoints (B, 64.7), Merge Accounting API (BB, 70.2), Merge Agent Handler (B, 69.6), Render MCP Server (B, 63.6), SmolLM3-3B (C, 61), Temporal (A, 78.3) and TrueLayer (B, 62.2).

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.