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Rain AI

Rain AI

Private
San Mateo, CaliforniaAI, Data & Cloud Infrastructurehttps://rain.ai

Last Round

Series B

May 1, 2025

Est. Valuation

$600M

Total Funding Raised

$38.22M

Company Overview

Rain AI is a semiconductor company that develops energy-efficient, brain-inspired neuromorphic hardware for artificial intelligence applications.

Sector

AI, Data & Cloud Infrastructure

Verticals

Semiconductors, Computing Hardware, AI Training Infrastructure

Business Model

B2B

Customer Profile

Hardware Sales, Subscription SaaS, Government Contracts, Services & Consulting

AI Layer

Infrastructure

Keywords

NPUneuromorphic processing unitAI hardwareAI chipAI acceleratorneuromorphic computingfabless semiconductorhardware-software co-designAI computesilicon-as-a-servicecompute-in-memoryAI infrastructurecustom siliconenergy-efficient AIfrontier AI hardware

Historical Pricing

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Caplight Momentum Score

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Rain AI Comparables

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Rain AI comparables — related companies by embedding similarity
CompanySimilarityMarket Cap
Analog Inference
86%
Positron AI
83%
d-Matrix
81%

Rain AI Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
Series BMay 1, 2025
Series A ExtensionMay 26, 2024
Series AFeb 3, 2022
AcceleratorAug 1, 2018

Rain AI Investors

Notable investors and investment history

Rain AI investors
InvestorRounds
Loup FundsSeries A
DeepwaterSeed
Metaplanet HoldingsSeries A
Epic Venture PartnersSeries A Extension
GaingelsSeries A
Airbus VenturesSeed, Series A
Buckley VenturesSeries A

Recent news

Latest coverage and updates

  • partners_withAug 17, 2026

    Rain partners with FMCIDE.

  • launchesAug 17, 2026

    Rain launched AI Academy Nigeria on Aug 17th '26.

  • partners_withAug 17, 2026

    Rain partners with 3 Million Technical Talent.

  • is_developingAug 5, 2026

    Rain is developing neuromorphic processing units, or NPUs on Jul 1st '18.

Rain AI Filings

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Rain AI filings preview — column headings only; records require access
TypeDateAmount OfferedAmount SoldFilingPagesDownload

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Frequently Asked Questions

Common questions about Rain AI's valuation, stock price, and market status.

Is Rain a public or private company?

Rain is a private company.

What is the current stock price of Rain?

Rain is a private company with no public stock price. No recent secondary market data is available.

How much is Rain worth (valuation)?

Rain's valuation is estimated at $600.0M based on funding round data.

Can I buy Rain stock?

Rain shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors. Visit https://www.caplight.com to learn more.

When was Rain's last funding round?

Rain's most recent funding round was Series B on May 1, 2025.

Who are the main investors in Rain?

Key investors in Rain include Aramco Ventures, Y Combinator.

Will Rain IPO soon?

No public IPO plans have been announced for Rain.

How can I track Rain secondary market activity?

Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor Rain's secondary market activity and sign up for updates.

Firmographic Details

HeadquartersSan Mateo, California
Employee Range18
Year Founded2017
Last FundingMay 1, 2025

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