Updated 8 Nov 2026
Arena valuation: $3.1B (Oct 2026).
Arena's newest valuation on record is $3.1B (Series B), up 82% in 9 months from $1.7B (Jan 2026, Series A). It is #8 of the 16 AI data companies with a valuation on record, valued at 31 times the revenue on record before it ($100M, run rate, Oct 2026).
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Arena's valuation over time
Every completed valuation on record, newest first, each bar linked to the record and the article it comes from.
Where it stands
The AI data companies nearest Arena by newest valuation on record.
| # | Company | Valuation | When |
|---|---|---|---|
| 6 | Snorkel AI | $3.5B | Sep 2026 |
| 7 | AfterQuery | $3.2B | Sep 2026 |
| 8 | Arena | $3.1B | Oct 2026 |
| 9 | Turing | $2.2B | Mar 2025 |
| 10 | Invisible Technologies | over $2B | Sep 2025 |
Arena's revenue over time. Arena and all its competitors, ranked.
Arena's funding rounds
Every disclosed round, investment and valuation on record, newest first.
- 8 Oct 2026Series B, $200M, at a valuation of $3.1B
- 6 Jan 2026Series A, $150M, at a valuation of $1.7B
The questions people ask
- What is Arena's valuation?
- $3.1B, its newest valuation on record (Oct 2026, Series B). Arena is #8 of the 16 AI data companies with a valuation on record.
- How has Arena's valuation changed over time?
- Up 82% in 9 months: $1.7B (Jan 2026, Series A), then $3.1B (Oct 2026, Series B).
- What is Arena valued at compared with its revenue?
- 31 times its revenue: $3.1B (Oct 2026) against $100M (run rate, Oct 2026), the newest revenue on record before it. Our arithmetic on the two records.
- How much money has Arena raised?
- $350M in disclosed rounds and investments on record.
- Which AI data companies are valued highest?
- By newest valuation on record: #1 Scale AI at $29B (Jun 2025), #2 Applied Intuition at $15B (Jun 2025), #3 Mercor at $10B (Oct 2025). Arena is #8.
- Where the figures come from.
- Each valuation is a record: what Arena or its investors announced, or what a named outlet reported, with the page it was read on. A valuation a company was only in talks to raise at is not its valuation here, and an estimate site's figure is never a record.
- Valuation and revenue.
- A valuation is what investors paid per share times all the shares, often with terms that favour the newest investors; set against revenue it shows what the market pays for each dollar of it, not what the company would sell for.
These companies buy and build the data AI is trained on. See what yours is worth to them.
The companies that build AI training data, ranked by revenue: the 2026 rankings