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Eric Hartford

Founder of Quixi.AI and creator of the Dolphin and Samantha open models; formerly at Microsoft and AWS

  • Founder, Quixi.AI1

Eric Hartford is the founder of Quixi.AI, which its site describes as an independent AI lab building a private-AI stack, and the site says Hartford created the Dolphin and Samantha open models. Dolphin's Hugging Face organization lists Hartford as a team member and publishes Dolphin fine-tunes of open-weight base models, such as Dolphin X1 Trinity Nano, built on Arcee AI's Trinity Nano and released under the Apache 2.0 license. Quixi.AI's projects also include SlimServe, an inference engine for a curated set of open models. The site says Hartford previously worked at Microsoft, AWS and eBay.123

Work

  • Dolphin (external site: huggingface.co)Open weights

    Hartford's site says Hartford created the Dolphin open models, and the Dolphin organization on Hugging Face lists Hartford as a team member. Its releases include Dolphin X1 Trinity Nano, a fine-tune of Arcee AI's Trinity Nano whose model card gives the Apache 2.0 license.123

Earlier roles

This profile covers public professional work only, from the sources below. It is not an endorsement or a ranking. To correct or remove it, use the correction form.

Sources · reviewed Oct 13, 2026

  1. 1.
    Quixi.AI — Eric Hartford (external site: quixi.ai)

    Quixi.AI · Official page · accessed Oct 13, 2026

  2. 2.
    Dolphin (dphn) on Hugging Face (external site: huggingface.co)

    Hugging Face · Official page · accessed Oct 13, 2026

  3. 3.
    dphn/Dolphin-X1-Trinity-Nano model card (external site: huggingface.co)

    Dolphin (Hugging Face) · Model card · accessed Oct 13, 2026

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