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  "markdown": "Angel investor.\n\n## Companies on Anchor Terminal\n\n- **Baseten**, Series A, April 2022, valued at $13B as announced (the source doesn't say pre- or post-money), Series F, June 2026\n  - [Baseten](https://www.anchorterminal.com/tools/baseten.md), graded B, 66.7/100\n  - [elephant-1](https://www.anchorterminal.com/tools/elephant-1.md), graded D, 47.6/100\n  - [mammoth-1](https://www.anchorterminal.com/tools/mammoth-1.md), graded D, 47.7/100\n  - Source: https://www.baseten.co/blog/announcing-our-series-a/\n- **ElevenLabs**, Series A, June 2023, valued at $11B as announced (the source doesn't say pre- or post-money), Series D, February 2026\n  - [ElevenLabs Agents API + MCP](https://www.anchorterminal.com/tools/elevenlabs-agents.md), graded BB, 71.4/100\n  - [ElevenLabs Music API](https://www.anchorterminal.com/tools/elevenlabs-music.md), graded B, 66.9/100\n  - [ElevenLabs Scribe Speech to Text API](https://www.anchorterminal.com/tools/elevenlabs-scribe.md), graded B, 69/100\n  - [ElevenLabs Text to Speech API + MCP](https://www.anchorterminal.com/tools/elevenlabs-tts.md), graded BB, 75.3/100\n  - [ElevenLabs Voice Cloning and Voice Design API](https://www.anchorterminal.com/tools/elevenlabs-voice-cloning.md), graded BB, 74.8/100\n  - Source: https://elevenlabs.io/blog/elevenlabs-launches-new-generative-voice-ai-products-and-announces-19m-series-a-round-led-by-nat-friedman-daniel-gross-and-andreessen-horowitz\n\n## Where they invest\n\n- Decision models, 2\n- GPU \u0026 serverless compute, 1\n- Conversational voice agents, 1\n- Music generation, 1\n- Speech-to-text, 1\n- Text-to-speech, 1\n- Voice cloning \u0026 custom voices, 1\n\n## Founders they backed\n\n- [Tuhin Srivastava](https://www.anchorterminal.com/people/tuhin-srivastava/), Baseten\n- [Amir Haghighat](https://www.anchorterminal.com/people/amir-haghighat/), Baseten\n- [Phil Howes](https://www.anchorterminal.com/people/phil-howes/), Baseten\n- [Pankaj Gupta](https://www.anchorterminal.com/people/pankaj-gupta/), Baseten\n- [Mati Staniszewski](https://www.anchorterminal.com/people/mati-staniszewski/), ElevenLabs\n- [Piotr Dąbkowski](https://www.anchorterminal.com/people/piotr-dabkowski/), ElevenLabs\n\n## Questions\n\n### Which AI tools has Mustafa Suleyman invested in?\n\nAnchor Terminal lists Baseten and ElevenLabs backed by Mustafa Suleyman.\n\n### How are Mustafa Suleyman's companies graded?\n\nOn Anchor Terminal's benchmark, Baseten (B, 66.7), elephant-1 (D, 47.6), mammoth-1 (D, 47.7), ElevenLabs Agents API + MCP (BB, 71.4), ElevenLabs Music API (B, 66.9), ElevenLabs Scribe Speech to Text API (B, 69), ElevenLabs Text to Speech API + MCP (BB, 75.3) and ElevenLabs Voice Cloning and Voice Design API (BB, 74.8).\n\nInvestors 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. 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.\n",
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