Z
Zyphra
Core neolabOpen models, multisilicon (AMD-first) inference cloud and an agent product
Raised, confirmed—0 confirmed rounds
Valuation, confirmed—none disclosed
Valuation, reported$5B19 May 2026, not confirmed
Founded2021San Francisco, CA, US
Key facts
| Field | Value | Source · checked |
|---|---|---|
| Classification | Core neolabOpen-model research lab with its own AMD-based inference cloud; Series A at $1B valuation (2025) and a reported $500M round in progress (May 2026). | |
| Founded | 2021 | venturebeat.com Founded in 2021 and headquartered in Palo Alto, California, Zyphra Technologies is a full-stack artificial intelligence laboratorychecked 9 Nov 2026 |
| Headquarters | San Francisco, CA, USCompany address; some earlier coverage describes the company as Palo Alto-based. | zyphra.comchecked 9 Nov 2026 |
| Founders | Krithik Puthalath, Beren Millidge | |
| Website | zyphra.com | zyphra.com Zyphra is building the full stack for multisilicon open superintelligence.checked 9 Nov 2026 |
| Careers | zyphra.com16 open roles on 9 Nov 2026 | zyphra.comchecked 9 Nov 2026 |
| Profiles and work | X @ZyphraAILinkedInHugging Face, 37 modelsGitHub, 53 public reposWikidata | How links are checkedchecked 10 Nov 2026 |
Funding rounds
No round of Zyphra is confirmed by the company or a regulator. Rounds marked Reported or Abandoned are not included in that total. Status rules: methodology.
| Date | Round | Amount | Valuation | Investors | Status | Source · checked |
|---|---|---|---|---|---|---|
| 19 May 2026 | Funding round | $500M | $5B | AMD | Reported | Forbes · open account Artificial Intelligence Lab Zyphra Raising $500 Million To Challenge Nvidia Dominance+2 more sourceschecked 9 Nov 2026 |
| Oct 2025 | Series A | undisclosed | $1B | not disclosed | Reported | IBM / AMD (PR Newswire) Zyphra recently closed a Series A financing round at a $1B valuationchecked 9 Nov 2026 |
Notes on these rounds
- 19 May 2026 Funding round: Reported as a raise of about $500 million at a valuation of at least $5 billion, with commitment from AMD; Zyphra declined to comment and no company announcement found.
- Oct 2025 Series A: Closed before the 1 Oct 2025 announcement by IBM and AMD; amount not disclosed in that release.
People
| Name | Role | Before | Now | Source · checked |
|---|---|---|---|---|
| Krithik PuthalathLinkedIn | Founder and CEO | — | Current | |
| Beren MillidgeXScholarHugging FaceSite | Co-Founder and Chief Scientist | — | Current |
Professional facts from public sources only. How people records are handled.
What it has shipped
| Name | Kind | Date | Open weights | Source · checked |
|---|---|---|---|---|
| ZYFA | tool | 5 Nov 2026 | — | zyphra.com Zyphra presents ZYFA, FP8 and BF16 prefill attention kernels for AMD Instinct MI355X GPUs.checked 10 Nov 2026 |
| Zyphra Hierarchical Attention (ZHA) | paper | 2 Nov 2026 | — | |
| ZONOS3-Mini | model | 9 Nov 2026 | Yes | zyphra.com The ZONOS3-Mini model weights are available on Hugging Face, and our runtimes are available on our GitHub.checked 9 Nov 2026 |
| MAIA | product | 6 Nov 2026 | No | |
| ZAYA1-8B | model | 6 May 2026 | Yes | zyphra.com It is available to test today Zyphra Cloud or get the model weights from Huggingface.checked 9 Nov 2026 |
| ZAYA1 | model | 24 Nov 2025 | — | zyphra.com ZAYA1 – Pretraining on Integrated AMD Platform: Compute, Network, and System Designchecked 9 Nov 2026 |
| Zyphra Cloud (15 MW AMD Instinct MI355X capacity) | product | 11 May 2026 | No | prnewswire.com Zyphra today announced the availability of 15 megawatts of AMD Instinct™ MI355X GPU capacity through Zyphra Cloudchecked 9 Nov 2026 |
Latest posts on X
The most recent posts from @ZyphraAI, the X account of Zyphra, quoted as posted. Replies and reposts are left out. How posts are selected.
Meet ZONOS3-Mini: open-source text-to-speech with voice cloning and word-level control. All on-device and super fast. Every voice in this video is from a TTS model that can run real-time on a phone. Comment “ZONOS” within 2 days for 20 hours of free audio. Sound on 🔊
View the post on X · With video
Our mission at Zyphra is to make open superintelligence accessible to everyone. Today, we're excited to beta release MAIA, the application layer of our fullstack. Meet your new colleague. A proactive, multiplayer AI agent for teams. Free during beta: zyphra.com/maia
View the post on X · With video
Introducing Zyphra FlashAttention (ZYFA): faster, more accurate 8-bit floating-point (FP8) attention on AMD MI355X. Our prefill kernels deliver 1.16–1.76x the throughput of AMD’s inference kernel library, AITER, on real model inputs at 16K tokens under sustained load. 🧵
View the post on X · With 1 image
checked 10 Nov 2026
Commonly cited, checked
Figures and statements about Zyphra that circulate in lists and summaries, and what the sources support.
| Claim | Finding | Source |
|---|---|---|
| Raising $500M at about a $5B valuation | Forbes reported on 19 May 2026, citing sources, that Zyphra is raising about $500M at a valuation of at least $5B; no closed round is announced by the company. | forbes.com Artificial Intelligence Lab Zyphra Raising $500 Million To Challenge Nvidia Dominance |
| 2020 | Coverage gives 2021 as the founding year. | venturebeat.com Founded in 2021 and headquartered in Palo Alto, California, Zyphra Technologies is a full-stack artificial intelligence laboratory |
Work at Zyphra, or see something wrong? Update this profile with a public source. How corrections work.