When was Ineffable founded?

Ineffable was founded in 2025 and become a unicorn in its 1st funding round in 2026.

Where is Ineffable located?

Ineffable is headquartered in United Kingdom.

Is Ineffable a funded company?

Ineffable is a funded company, having raised a total of $1.1B in its 1st and only funding round, a Seed round on Apr 27, 2026.

When was the latest funding round of Ineffable?

Ineffable's latest funding was a $1.1B Seed round on Apr 27, 2026, with participation from 7 investors.

Is Ineffable a AI Infrastructure company?

The primary sector of Ineffable is AI Infrastructure.

Where does Ineffable rank among its competitors?

Ineffable ranks 2nd amongst 46 active competitors, of which 9 are funded. It stands 1st in terms of total funding among its competitors. The most recent competitor to raise funding was Ineffable Intelligence, which secured $1.1B in Apr, 2026.

Who are the top competitors of Ineffable?

Ineffable's top competitors include openmind.org, AgileRL and Mechanize. Among them, Ineffable secured the most recent funding round in April, 2026.

Ineffable - 2026 Company Profile, Funding & Competitors

Sectors and market segments that Ineffable operate in

Ineffable serves in the High Tech, Native AI market segments.The primary business model of Ineffable are:

Company Details

Developer of reinforcement learning algorithms for autonomous superlearning artificial intelligence. This technology enables machines to acquire knowledge and skills through direct environmental experience rather than relying on human-provided data. The system functions by discovering and refining capabilities across digital and physical platforms without external instruction. The architecture focuses on continuous improvement and the autonomous development of complex intellectual tasks.

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Email ID: *****@ineffable.ai

Key Metrics

Founded Year

2025

Location

United Kingdom

Stage

Seed

Total Funding

$1.1B in 1 round

Latest Funding Round

Seed, Apr 27, 2026, $1.1B

Post Money Valuation

as on Apr 27, 2026

Investors

Lightspeed Venture Partners & 7 more

Ranked

2^nd among 46 active competitors

Similar Companies

openmind.org & 44 more

View Ineffable's full profile

Ineffable has raised a total funding of $1.1B over 1 round. Its latest funding round was a Seed round on Apr 27, 2026 for $1.1B. 7 investors participated in its latest round. Ineffable has 8 institutional investors.

Here is the list of recent funding rounds of Ineffable:

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Apr 27, 2026	$1.1B	Seed	-	-	Sequoia Capital, Lightspeed Venture Partners	Index Ventures, Google, Nvidia, British Business Bank, DST Global

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Top competitors of Ineffable include openmind.org, AgileRL and Mechanize. Here is the list of Top 10 competitors of Ineffable, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	openmind.org Series A	Developer of open source artificial intelligence robot operating system and fabric	$20M	Pantera Capital, Pi Network & 3 others	52/100
2nd	Ineffable 2025, United Kingdom, Seed	Developer of reinforcement learning algorithms for autonomous superlearning artificial intelligence	$1.1B	Index Ventures, DST Global & 6 others	45/100
3rd	AgileRL 2023, London (United Kingdom), Seed	Developer of a platform for reinforcement learning and RLOps solutions	$7.5M	Fusion Fund, Octopus Ventures & 5 others	40/100
4th	Mechanize 2025, San Francisco (United States), Seed	Developer of RL environments for training AI models in software tasks	-	-	36/100
5th	Victus 2024, Fort Walton Beach (United States), Seed	Developer of navigation software leveraging reinforcement learning for autonomous systems	-	Bow Capital, Intbox Ventures & 3 others	25/100
6th	Rubric AI 2025, San Francisco (United States), Unfunded	Post-training research platform for AI models and agents	-	-	24/100
7th	Polymath 2026, San Francisco (United States), Seed	Developer of reinforcement learning environments for software engineering tasks	$500K	Y Combinator	23/100
8th	AgenticBlox 2025, Austin (United States), Unfunded	Developer of a crowdsourced framework for creating modular AI applications	-	-	22/100
9th	Traverse 2020, San Francisco (United States), Seed	Developer of reinforcement learning environments for automating economically valuable work	$500K	Y Combinator	22/100
10th	Thellmdatacompany 2025, San Francisco (United States), Seed	Provider of environments, tasks, and graders for reinforcement learning models	$500K	Y Combinator	17/100