RadixArk raises funding led by Accel, valued at $400 million, to advance AI inference optimization and cost efficiency.
Round Type
Funding Round
BerkeleyInformation TechnologySoftwareArtificial IntelligenceMachine LearningInvestors
Description
RadixArk has secured funding led by Accel, positioning the company with a valuation of approximately $400 million. The funding aims to enhance AI inference processing, targeting improved efficiency and cost reduction. Previously, the startup raised angel capital from notable investors including Lip-Bu Tan. The ongoing efforts focus on optimizing inference processing as a significant cost factor for server operations.
Quick answer
RadixArk raised an undisclosed amount in a Funding Round round, dated January 22, 2026. Investors: Lip Bu Tan and Accel. RadixArk is based in Berkeley, California, United States.
- How much did RadixArk raise?
- RadixArk raised an undisclosed amount in a Funding Round round on January 22, 2026.
- Who invested in RadixArk?
- Lip Bu Tan and Accel are named as investors in this round.
- What does RadixArk do?
- RadixArk is a commercial startup that originated from SGLang at UC Berkeley’s lab, focusing on AI inference optimization and cost efficiency.
- Where is RadixArk based and how big is it?
- RadixArk is based in Berkeley, California, United States. Fundz records about 27 employees.
- Who are the decision-makers at RadixArk?
- Fundz holds 2 contacts at RadixArk, including the Head of Product and Operations, Founding Team. Names and contact details are shown to Fundz members.
Source: Fundz verified event record.
Who else raised in Software and Artificial Intelligence around the same time
Companies in the same sectors as RadixArk that raised within 45 days of this round, from Fundz verified event records.
- AgriPass raised $7.5M (Seed) on March 5, 2026.
- Cheerio AI raised $869K (Seed) on March 5, 2026.
- Gradient AI raised an undisclosed amount (Debt Financing) on March 4, 2026.
- Vivox AI raised $1.7M (Seed) on March 4, 2026.
- Mutable Tactics raised $2.1M (Pre-Seed) on March 4, 2026.
- Diligent AI raised $2.4M (Seed) on March 4, 2026.
Who to call at RadixArk, and when
A new round usually means RadixArk is about to hire and buy. The teams that reach out first get the meeting.
- An alert the day RadixArk raises, hires an executive or expands, scored against what you sell
- The decision-makers there, with verified emails
- Who you already know at RadixArk, from your own LinkedIn network
Works inside ChatGPT and Claude. Ask who to call at RadixArk. With Fundz connected, it knows.
AI made execution free. Knowing first is the whole game now.
Fundz sees it the moment RadixArk raises, hires an exec or expands, usually minutes after it happens, and tells you who to reach.
Related People
RadixArk raised. Fundz records a round at a median of 3.6 minutes from the SEC filing, with the decision-maker attached.
145 of these a day, filtered to the companies you pick, with the decision-maker attached.
5 screens from a live account. No signup.