Phinity
Founded 2025 · 6 employees on LinkedIn · 1 known investors
Phinity builds AI agents that design, verify, and tape out custom chips end-to-end, aiming to let users describe a chip and receive a GDS file in weeks. It operates in the semiconductor design automation space using AI-driven agents.
Also known as Phinity Labs
Investors · 1
Company profile
researched Aug 2026Phinity, also referred to as Phinity Labs, is a San Francisco-based company developing an AI-driven platform for autonomous chip design, verification, and tapeout. Its stated approach is to build foundational training infrastructure that teaches large language models how to design, verify, and tape out chips, targeting the shortage of training data available for hardware design tasks.
The company's work also involves converting expert engineering workflows into reinforcement learning environments so that AI systems can learn complex tasks across hardware, mechanics, and design. Associated technical themes include RTL design, GDS file generation, agentic workflows, and EDA automation. Phinity is classified as an enterprise software and semiconductor/computing hardware company with a B2B model, and is described as being at seed stage.
Founding story
Co-founder Sonya Jin previously worked as a research scientist on LLMs at NVIDIA and as an applied scientist in graph machine learning at Amazon Web Services.
Business model
B2B software sold to businesses, characterized as subscription and usage-based SaaS.
Subscription SaaS and usage-based SaaS pricing.
Traction
Reported employee growth from three to nine staff during early 2026, and institutional investor backing at the seed stage.
▸Full profile — market position, technology, go-to-market, geography, history
Market position
Positioned in the AI-for-semiconductor-design segment, with companies such as ChipAgents, Chipstack, ChipNexus, Ricursive Intelligence, BoolSi, Tensordyne, and Xent AI identified as similar or comparable businesses.
Technology
Combines large language models with reinforcement learning environments derived from expert engineering workflows, applied to chip design tasks including RTL design, verification, GDS file generation, tapeout, and EDA automation through agentic workflows.
Go-to-market
Businesses engaged in hardware and semiconductor engineering.
Geography
Headquartered in San Francisco, California, United States.
History
The company was founded in 2025 and is headquartered in San Francisco, California. It operated in stealth mode for roughly seven months before co-founder Sonya Jin publicly surfaced the company in October 2025. Headcount grew from three employees in early 2026 to nine, with reported quarter-over-quarter growth of 133% as of March 2026 and 100% as of April 2026.
Compiled by commissioned research from 3 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
▸Research sources · 3
primary sources listed
- Phinity Labs | Valuation, Funding Rounds & Stock Price | Caplightcaplight.com · web
3 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Phinity do?
- Phinity builds AI training infrastructure and agents for autonomous chip design, verification, and tapeout.
- Who are Phinity's investors?
- Phinity's investors include Moxxie Ventures.