An index of frontier and emerging AI labs.
Frontier lab
Founded by ex-DeepMind RL lead David Silver. $1.1B seed (largest in Europe) at $5.1B valuation, April 2026.
| Name | Ineffable Intelligence |
|---|---|
| Space | Frontier lab |
| Founded | 2025 |
| Latest valuation | $5.1B |
| Stage | — |
| Status | active |
| HQ | London |
| Founders | David Silver |
| Website | https://www.ineffable.ai |
| Careers | https://www.ineffable.ai/careers |
| — | |
| X / Twitter | — |
| Date | Round | Amount ($M) | Valuation | Confidence | Source |
|---|---|---|---|---|---|
| — | — | — | $5.1B | reported | — |
No founders recorded yet. Submit info.
| Date | Type | Title | Source |
|---|---|---|---|
| 2026-06-14 | added | Ineffable Intelligence added to tracker Latest valuation: $5.1B. | — |
No sources cited.
| Lab | Valuation | Founded |
|---|---|---|
| Anthropic | $965B | 2021 |
| OpenAI | $852B | 2015 |
| xAI | $250B | 2023 |
| SSI (Safe Superintelligence) | $32B | 2024 |
| Moonshot AI | $20B | 2023 |
| Thinking Machines Lab | $12B | 2025 |
| Ricursive Intelligence | $4B | 2025 |
| AAI | >$1B | 2023 |