Organization
Zyphra
Model developer · Research lab · Inference provider · San Francisco, California
Zyphra is a San Francisco AI company that trains open foundation models, including the Zamba hybrid state-space language models and the ZAYA1 mixture-of-experts models. It also runs Zyphra Cloud, a hosted platform for model inference and GPU compute.1758
Key facts
- Ownership
- Privately held
- Legal form
- Unknown
- Other documented locations
- London, United Kingdom2
- Founded
- Unknown
- Sectors
- Open models, Research, Cloud
What is and isn’t public
Zyphra publishes model weights on Hugging Face, including the Zamba, ZAYA1, and Zonos models, as well as the Zyda pretraining datasets. Its Zamba2-VL and ZAYA1-8B announcements state Apache 2.0 licensing. Zyphra Cloud and Maia are hosted services. This catalog assesses openness release by release (see the Zamba release records).111085
Products
Hosted model products
Labeled Closed product/API — this describes how a documented product is delivered (hosted access). It is not an open artifact and says nothing about other releases by the same organization.
| Product | Kind | Documented delivery and access | Reviewed |
|---|---|---|---|
| Maia (external site: zyphra.com) | Assistant app | Agent for teams that works across language, audio, and images and connects to tools such as Gmail, Google Calendar, and Google Drive. The product page links to the Zyphra Cloud login and does not state availability or pricing terms.6 | Sep 29, 2026 |
Other products
| Product | Kind | Documented delivery and access | Reviewed |
|---|---|---|---|
| Zyphra Cloud (external site: zyphra.com) | Inference service | Hosted platform with serverless inference for open-weight models (including a ZAYA1-8B endpoint), reserved capacity for production deployments, and GPU compute. Users sign up and log in at cloud.zyphra.com.58 | Sep 29, 2026 |
Related open artifacts
Model families
- ZambaModel family
Model releases
- Zamba2-7BModel releaseAvailability: PublicModel-disclosure tier (USASI rubric v0.1): Open-weight
- Zamba2-VL-7BModel releaseAvailability: PublicModel-disclosure tier (USASI rubric v0.1): Open-weight
Notable documented facts
U.S. eligibility
Eligible · basis: U.S. headquarters
Zyphra's terms of use (May 2026) and privacy policy (August 2026) name Zyphra Technologies, Inc. at 415 Mission Street, San Francisco, and apply California law with San Francisco venue. Its May 2026 release announcement describes the company as headquartered in San Francisco. The about page describes the company as based in San Francisco and London; no foreign parent or headquarters was found.3482
Sources
This listing is not an endorsement or a federal approval.