Ineffable
SeedIneffable is a privately held company based in United Kingdom, founded in 2025. The latest disclosed round is Seed ($1.1b), dated Apr 27, 2026. Institutional investors on record include Lightspeed Venture Partners, Sequoia Capital. Latest valuation on file is 5,1B (Apr 27, 2026).
United Kingdom · EST 2025
What is Ineffable?
Ineffable is a privately held company based in United Kingdom, founded in 2025. The latest disclosed round is Seed ($1.1b), dated Apr 27, 2026. Institutional investors on record include Lightspeed Venture Partners, Sequoia Capital. Latest valuation on file is 5,1B (Apr 27, 2026). Developer of reinforcement learning algorithms for autonomous superlearning artificial intelligence. CrackTheDeck lists dated rounds and linked fund profiles so founders can see who is already on the cap table before a pitch. Round sizes are shown only when disclosed. Empty fields mean the figure was not in those records. Open a fund name to read that firm's thesis, reported AUM, and recent dated deals. This page is compiled from financings linked to catalog funds. It is not a complete cap table. Founders use this card to check the latest disclosed round, amount, and syndicate before a meeting.
Which funds backed Ineffable?
Who invested in Ineffable?
Funds on the dated round table. Open a name to read the fund card.
| Investor | Round | Amount | Date |
|---|---|---|---|
| Lightspeed Venture Partners | Seed | $1.1b | Apr 27, 2026 |
| Sequoia Capital | Seed | $1.1b | Apr 27, 2026 |
What do founders ask about Ineffable?
What is Ineffable?
Ineffable is a privately held company based in United Kingdom, founded in 2025. The latest disclosed round is Seed ($1.1b), dated Apr 27, 2026. Institutional investors on record include Lightspeed Venture Partners, Sequoia Capital. Latest valuation on file is 5,1B (Apr 27, 2026). Developer of reinforcement learning algorithms for autonomous superlearning artificial intelligence. CrackTheDeck lists dated rounds and linked fund profiles so founders can see who is already on the cap table before a pitch. Round sizes are shown only when disclosed. Empty fields mean the figure was not in those records. Open a fund name to read that firm's thesis, reported AUM, and recent dated deals. This page is compiled from financings linked to catalog funds. It is not a complete cap table. Founders use this card to check the latest disclosed round, amount, and syndicate before a meeting.
What was Ineffable's last funding round?
Ineffable's latest disclosed round is Seed at $1.1b (Apr 27, 2026).
Who invested in Ineffable?
Ineffable has 2 institutional investors on this page, including Lightspeed Venture Partners, Sequoia Capital.
How does CrackTheDeck cover Ineffable?
This startup card lists dated rounds and linked fund profiles so founders can see who is already in the cap table before a pitch.
How is this page compiled?
Round, amount, and investor names on the Ineffable card come from dated financings linked to fund profiles in CrackTheDeck. Empty fields mean the figure was not in those records. Updated Aug 2026.