AI21 Labs

Tel Aviv, Israel · Founded 2017 · Privately Held (backing)

Developer of artificial intelligence and large language models, and tools designed to understand and generate natural language. AI21 Labs is based in Tel Aviv, Israel and was founded in 2017. It was valued at $1.4 billion at its later-stage round in May 2025, the last priced event on record. It has raised $637 million across 1 recorded round; the latest was a $300 million Series D in May 2025.

PMV mark · valuation
$1.4B
Nov 2026
Priced at
its later-stage round
May 2025
Total raised
$636.9M
Last round
Series D
May 2025
What is AI21 Labs worth?
$1.4BPrivateMarketView mark · Nov 2026

Valued at $1.4B at its later-stage round, May 2025. Nothing has traded since.

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Valuation timeline

0 priced rounds · 44 daily marks since · Sep 2026 – Nov 2026
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Markrounds hold their value until the next priced eventMark, today
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AI21 Labs funding history

1 rounds
DateRoundRaisedPost-money
May 2025Series D$300.0M▮
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AI21 Labs valuation

AI21 Labs was valued at $1.4 billion at its later-stage round in May 2025. That is the last priced event on record: no secondary trade or institutional fund mark has moved the figure since.

How much has AI21 Labs raised?

AI21 Labs has raised $637 million in total; 1 of its rounds is on record. The largest on record was a $300 million Series D in May 2025.

How AI21 Labs's valuation is determined

Private company valuations aren’t quoted on an exchange — they’re established in moments: a priced funding round sets a post-money valuation, secondary trades print at a price per share, and SEC-registered funds holding the stock report fair-value marks in their N-PORT filings.

For AI21 Labs, the most current credible signal sets the number and the older ones confirm it: a live secondary-market price first, then three or more recent prints, then institutional fund marks, and otherwise the last priced round, which never decays. The valuation is the last round’s post-money moved by the price change since that round, so no share count is assumed. Today it is set by its last priced round. Question about this number? Full methodology →

Frequently asked about AI21 Labs

What is AI21 Labs worth?
AI21 Labs is valued at $1.4B as of Nov 2026. Valued at $1.4B at its later-stage round, May 2025. Nothing has traded since.
How much has AI21 Labs raised?
AI21 Labs has raised $636.9M in total funding across 1 recorded rounds.
When did AI21 Labs last raise?
AI21 Labs last raised in May 2025 (Series D), raising $300.0M.