Ineffable - About the company
Ineffable is a seed company based in Altrincham (United Kingdom), founded in 2025 by David Silver and Alexandre Laterre. It operates as a Developer of reinforcement learning algorithms for autonomous superlearning artificial intelligence. Ineffable has raised $1.1B in funding from Lightspeed Venture Partners and Sequoia Capital, with a current valuation of $5.1B. The company has 47 active competitors, including 9 that are funded. Its top competitors include companies like openmind.org, AgileRL and Mechanize.
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.
- Website
- www.ineffable.ai/
- Social
- Email ID
- *****@ineffable.ai
Key Metrics
Founded Year
2025
Location
Altrincham, United Kingdom
Stage
Seed
Total Funding
$1.1B in 1 round
Latest Funding Round
Post Money Valuation
$5.1B as on Apr 27, 2026
Investors
Ranked
1st among 47 active competitors
Employee Count
19 as on May 31, 2026
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Ineffable's funding and investors
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. 8 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 | - | - |
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Ineffable's founders and board of directors
Founder? Claim ProfileThe founders of Ineffable are David Silver and Alexandre Laterre. David Silver is the CEO of Ineffable.
Here are the details of Ineffable's key team members:
- David Silver: Co-Founder & CEO of Ineffable. Contact Info: 1 email address
- Alexandre Laterre: Co-Founder of Ineffable. Contact Info: 1 email address
View details of Ineffable's Founder profiles and Board Members
Ineffable's employee count trend
Ineffable has 19 employees as of May 26. Here is Ineffable's employee count trend over the years:
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Ineffable's Competitors and alternates
Top competitors of Ineffable include openmind.org, AgileRL and Mechanize. Here is the list of Top 10 competitors of Ineffable, ranked by Tracxn score:
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Rank | Company Details | Short Description | Total Funding | Investors | Tracxn Score |
|---|---|---|---|---|---|
1st |  Ineffable 2025, Altrincham (United Kingdom), Seed | Developer of reinforcement learning algorithms for autonomous superlearning artificial intelligence | $1.1B | 52/100 | |
2nd |  openmind.org Series A | Developer of open source artificial intelligence robot operating system and fabric | $20M | 52/100 | |
3rd |  AgileRL 2023, London (United Kingdom), Seed | Developer of a platform for reinforcement learning and RLOps solutions | $7.5M | 40/100 | |
4th |  Mechanize 2025, San Francisco (United States), Seed | Developer of RL environments for training AI models in software tasks | - | - | 37/100 |
5th | Victus 2024, Fort Walton Beach (United States), Seed | Developer of navigation software leveraging reinforcement learning for autonomous systems | - | 25/100 | |
6th |  Polymath 2026, San Francisco (United States), Seed | Developer of reinforcement learning environments for software engineering tasks | $500K | 25/100 | |
7th | Omni Aura 2021, Auburn (United States), Unfunded | Developer of AI tools, libraries, and frameworks for coding agents | - | - | 24/100 |
8th | Echohive 2025, Unfunded | Provider of AI tools, interactive experiences, and educational resources | - | - | 24/100 |
9th | Rubric AI 2025, San Francisco (United States), Unfunded | Post-training research platform for AI models and agents | - | - | 23/100 |
10th | Traverse 2020, San Francisco (United States), Seed | Developer of reinforcement learning environments for automating economically valuable work | $500K | 23/100 |
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Ineffable's Investments and acquisitions
Ineffable has made no investments or acquisitions yet.
Reports related to Ineffable
Here is the latest report on Ineffable's geography:
News related to Ineffable
Media has covered Ineffable for a total of 5 events in the last 1 year, 2 of them have been about company updates and 1 about partnerships.
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