Venture firm in listed AI tools
MGX
MGX has backed 3 companies behind 18 listings on Anchor Terminal.
Companies on Anchor Terminal
Anthropic Series G, February 2026, Series H, May 2026, led a round
- Claude API BB · Model APIs & inference
- Claude Agent SDK BB · Agent frameworks & SDKs
- Claude Code C · Agent harnesses
Source anthropic.com/news/…
Anthropic, PBC Series G, February 2026, Series H, May 2026, led a round
Source anthropic.com/news/…
OpenAI $6.6B round, October 2024
- GPT-Live B · Conversational voice agents
- gpt-oss-120b BB · Open-weight models
- gpt-oss-20b B · Open-weight models
- OpenAI Agents SDK AA · Agent frameworks & SDKs
- OpenAI API A · Model APIs & inference
- OpenAI Codex BB · Agent harnesses
- OpenAI Decisions API BB · Decision models
- Dots F · Personal assistants
- OpenAI embeddings BB · Embeddings & rerankers
- OpenAI Guardrails B · Guardrails & safety filters
- OpenAI Image API BB · Image generation
- OpenAI Moderation API BB · Guardrails & safety filters
- OpenAI Realtime API B · Conversational voice agents
- OpenAI Speech to Text BB · Speech-to-text
Source nbcnews.com/business/…
Where they invest
Model APIs & inference 2 Agent frameworks & SDKs 2 Agent harnesses 2 Personal assistants 2 Conversational voice agents 2 Open-weight models 2 Guardrails & safety filters 2 Decision models 1 Embeddings & rerankers 1 Image generation 1 Speech-to-text 1
Founders they backed
- Dario Amodei Anthropic
- Daniela Amodei Anthropic
- Tom Brown Anthropic
- Jack Clark Anthropic
- Jared Kaplan Anthropic
- Sam McCandlish Anthropic
- Chris Olah Anthropic
- Karan Ahuja Anthropic, PBC
- Sam Altman OpenAI and Stripe, OpenAI
- Elon Musk OpenAI and Stripe, OpenAI
- Greg Brockman OpenAI and Stripe, OpenAI
- Ilya Sutskever OpenAI and Stripe, OpenAI
- John Schulman OpenAI and Stripe, OpenAI
- Wojciech Zaremba OpenAI and Stripe, OpenAI
- Trevor Blackwell OpenAI and Stripe, OpenAI
- Vicki Cheung OpenAI and Stripe, OpenAI
- Andrej Karpathy OpenAI and Stripe, OpenAI
- Durk Kingma OpenAI and Stripe, OpenAI
- Pamela Vagata OpenAI and Stripe, OpenAI
Questions
Which AI tools has MGX invested in?
Anchor Terminal lists Anthropic, Anthropic, PBC and OpenAI backed by MGX.
How are MGX's companies graded?
On Anchor Terminal's benchmark, Claude API (BB, 77.3), Claude Agent SDK (BB, 70.1), Claude Code (C, 59.9), Claude Duet (F, 17.9), GPT-Live (B, 66.9), gpt-oss-120b (BB, 70.2), gpt-oss-20b (B, 69.9), OpenAI Agents SDK (AA, 86.2), OpenAI API (A, 82.9), OpenAI Codex (BB, 73.5), OpenAI Decisions API (BB, 73.1), Dots (F, 28.8), OpenAI embeddings (BB, 72.2), OpenAI Guardrails (B, 69.5), OpenAI Image API (BB, 72.4), OpenAI Moderation API (BB, 71.4), OpenAI Realtime API (B, 63.4) and OpenAI Speech to Text (BB, 72.6).
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 and the date it was researched. An investor isn't a sign of quality, and nobody can pay to be listed or to change a grade. To correct something or have a page removed, write to privacy@anchorterminal.com.