

Ineffable Intelligence
A frontier AI lab building a reinforcement-learning 'superlearner' meant to discover knowledge from its own experience, without pre-training on human data.
Money and evidence
No research by this company is on the record yet.
Rounds and research, on one timeline
- 2026-04-27SeedRound
$1.1B$5.1B post · stated by company
For: not stated for the round as a whole; the UK government says only that its own stake supports the company as it builds its technology, grows its team and scales from the UK
Not stated
Amount, co-leads and the $5.1B post-money valuation are in the release of the company's counsel, Cooley, of 27 April 2026. The participant list and the founder's pledge are from Tech.eu's report of the same day, which also says the valuation is the company's; it adds 'strategic angels' without naming them. No source read states what the round as a whole is for; the only use named is the UK government's, for its own Sovereign AI Fund and British Business Bank stake. Tech.eu calls it Europe's largest seed round, as does Cooley.
Co-lead · Sequoia Capital ✓Co-lead · Lightspeed Venture PartnersNVIDIADST GlobalIndex Ventures ✓GoogleFlying FishEQT VenturesEvantic CapitalWellcome TrustBONDBritish Business BankUK Sovereign AI Fund ✓
On the deal: Alfred Lin (Co-led the round; co-author of the firm's announcement, Sequoia Capital); Ravi Mhatre (Named as co-leading the round for Lightspeed, Lightspeed Venture Partners); Raviraj Jain (Named as co-leading the round for Lightspeed, Lightspeed Venture Partners); Sonya Huang (Co-led the round; co-author of the firm's announcement, Sequoia Capital)
Advisers: Cooley (company counsel)
Research entries are the timeline's graded entries that name this company. A level grades one claim, not the company, and a blank can mean the record has not caught up rather than that nothing was published.
On the investors' own sites
Investors that name this company on their own site, in a portfolio or their own announcement. A ✓ in a round marks the same investor.
- Sequoia CapitalLeadsequoiacap.com ↗
- Index Venturesindexventures.com ↗
- UK Sovereign AI Fundgov.uk ↗
Its investors also backed
Other companies on this page whose rounds name the same investor.
- NVentures (NVIDIA)EvolutionaryScale, Generate:Biomedicines, Iambic Therapeutics, Inceptive, Genesis Molecular AI (formerly Genesis Therapeutics), Terray Therapeutics, Lila Sciences, Periodic Labs, Radical AI, Achira, CuspAI, Orbital Industries, Basecamp Research, Relation Therapeutics, Mirendil, Superluminal Medicines, Ricursive Intelligence, AMI Labs, Recursive Superintelligence, Inherent, Generalist AI
- LightspeedWarp Sciences, Xaira Therapeutics, Enveda, Discovery Loop, CuspAI, Ricursive Intelligence
- Index VenturesChai Discovery, Albert, Cradle, Inherent
- Sequoia CapitalXaira Therapeutics, Chai Discovery, Iambic Therapeutics, Ricursive Intelligence
- DST GlobalChai Discovery, Helixon (Earendil Labs), Ricursive Intelligence
- Flying FishAccipiter Bio, Latent Labs
- UK Sovereign AI FundIsomorphic Labs, CuspAI
- British Business BankAlchemab Therapeutics