Ineffable Intelligence Valuation, Funding & Investors

Ineffable Intelligence is valued at $5.1B as of April 2026.

Last Ineffable Intelligence valuation

$5.1B

Seed · Apr 2026

Last Ineffable Intelligence funding round

$1.1B

Seed · Apr 2026

Cumulative funding Ineffable Intelligence raised

$1.1B

across 1 funding round

Key investors in Ineffable Intelligence

  • Sequoia Capital
  • Lightspeed Venture Partners
  • Index Ventures
  • Alphabet
  • DST Global
  • EQT Ventures

Ineffable Intelligence Overview

About Ineffable Intelligence

Ineffable Intelligence builds machine learning systems that learn via reinforcement learning through interaction and experience in simulated or real environments. These systems form a superlearner capable of autonomous knowledge generation, adaptation, and problem-solving across domains.


Founded

2025

HQ

United KingdomLondon

Status

Privately held

Valuation

$5.1B (Apr 2026)

Ineffable Intelligence Valuation

Ineffable Intelligence is currently valued at $5.1B, based on its seed round in April 2026.

The $1.1B round was led by Lightspeed Venture Partners and Sequoia Capital, with participation from NVIDIA, Index Ventures, Bond Capital, Wellcome Trust, Flying Fish Partners and 5 other investors.

Ineffable Intelligence valuation by funding round

Ineffable Intelligence valuation by funding round
DateStageValuation
Apr 2026Seed$5.1B

Ineffable Intelligence Funding History

Ineffable Intelligence has raised a total of $1.1B across 1 funding round.

Ineffable Intelligence funding rounds

Ineffable Intelligence funding rounds
DateStageInvestorsRaisedValuationDeal Summary
Apr 2026SeedLightspeed Venture Partners (lead); Sequoia Capital (lead); NVIDIA; Index Ventures; Bond Capital; Wellcome Trust; Flying Fish Partners; British Business Bank Investments; Evantic Capital; EQT Ventures; DST Global; Alphabet$1.1B$5.1BIneffable Intelligence raised $1.1 billion in seed funding at a $5.1 billion post-money valuation. The round was co-led by Sequoia Capital and Lightspeed Venture Partners, with participation from DST Global, NVIDIA, Google, Index Ventures, EQT Ventures & Growth, BOND, Flying Fish Partners, Evantic Capital, Wellcome Trust, British Business Bank ($20 million commitment), and the UK government’s Sovereign AI Fund. The funding supports Ineffable Intelligence's mission to advance frontier AI research, marking Europe's largest seed round and enabling breakthroughs in artificial intelligence development. The round exceeded initial targets, reflecting strong investor confidence in the company's potential amid global AI competition. Founded in 2025 in London by David Silver, former Google DeepMind researcher, Ineffable Intelligence emerged from stealth with this raise. The AI lab focuses on pioneering AI innovations, leveraging Silver's expertise in reinforcement learning and strategic backing from prominent venture firms and strategic investors.

Who has invested in Ineffable Intelligence?

12 investors have backed Ineffable Intelligence across its funding rounds, including Sequoia Capital, Lightspeed Venture Partners, Index Ventures, Alphabet, DST Global and EQT Ventures.

Lead investors include Lightspeed Venture Partners and Sequoia Capital.


Ineffable Intelligence Investors

Investors in Ineffable Intelligence by funding rounds participated
InvestorHQRoundsRoleFirst check
NVIDIAUnited StatesSan Jose, CA1ParticipantApr 2026
Index VenturesUnited KingdomLondon1ParticipantApr 2026
Bond CapitalCanadaVancouver1ParticipantApr 2026
Wellcome TrustUnited KingdomLondon1ParticipantApr 2026
Flying Fish PartnersUnited StatesSeattle, WA1ParticipantApr 2026
British Business Bank InvestmentsUnited KingdomSheffield1ParticipantApr 2026
Evantic CapitalUnited KingdomManchester1ParticipantApr 2026
Sequoia CapitalUnited StatesSan Francisco, CA1LeadApr 2026
Lightspeed Venture PartnersUnited StatesSan Francisco, CA1LeadApr 2026
EQT VenturesSwedenStockholm1ParticipantApr 2026

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Ineffable Intelligence Competitors

Ineffable Intelligence competitors include listed companies like Presight AI and Haizhi, and private ones like Recursive Superintelligence, Legora, SandboxAQ and Fal.

Public and private companies comparable to Ineffable Intelligence
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
Recursive SuperintelligenceUnited KingdomLondonPrivate--$4.7B-
LegoraSwedenStockholmPrivate$100M-$5.6B56.0x
Presight AIUAEUAEPublicly listed$825M$214M$5.7B5.4x
SandboxAQUnited StatesSan Francisco, CAPrivate--$5.8B-
FalUnited StatesSan Francisco, CAPrivate$200M-$4.5B22.5x
HaizhiChinaChinaPublicly listed$93M($30M)$2.1B16.3x

Ineffable Intelligence Public Comps

Ineffable Intelligence is still privately-owned, but its public comps include Presight AI, SenseTime Group, Tenable, XtalPi, CorVel, Fermi, Infleqtion, Shenzhen Intellifusion, UiPath and SoundHound.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
Presight AI$825M$214M6.3x5.4x24.4x20.8x
SenseTime Group$748M($70M)6.9x5.8x(73.5x)113.7x
Tenable$999M$31M4.1x3.9x129.9x15.3x
XtalPi$120M$22M24.8x21.5x134.0x(141.6x)
CorVel$959M$175M3.5x-19.1x-
Fermi-($490M)-281.8x(7.5x)(63.2x)
Infleqtion$29M($52M)92.3x64.5x(50.9x)(60.0x)
Shenzhen Intellifusion$200M($3M)14.3x14.6x(952.5x)(1086.5x)

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Common questions about Ineffable Intelligence

When was Ineffable Intelligence founded?Ineffable Intelligence was founded in 2025.
Where is Ineffable Intelligence headquartered?Ineffable Intelligence is headquartered in London, United Kingdom.
Is Ineffable Intelligence publicly listed?No, Ineffable Intelligence is a private, VC-backed company.
What is Ineffable Intelligence's valuation?Ineffable Intelligence was last valued at $5.1B in its seed round in April 2026.
How much funding has Ineffable Intelligence raised?Ineffable Intelligence has raised $1.1B across 1 funding round.
What was Ineffable Intelligence's last funding round?Ineffable Intelligence's last funding round was a $1.1B seed round in April 2026, led by Lightspeed Venture Partners and Sequoia Capital.
Who are Ineffable Intelligence's investors?Ineffable Intelligence's investors include NVIDIA, Index Ventures, Bond Capital, Wellcome Trust, Flying Fish Partners, British Business Bank Investments, Evantic Capital, Sequoia Capital, Lightspeed Venture Partners, EQT Ventures and 2 others.
Which companies are comparable to Ineffable Intelligence?Companies comparable to Ineffable Intelligence include Recursive Superintelligence, Legora, Presight AI, SandboxAQ, Fal and Haizhi.

See companies similar to Ineffable Intelligence

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