Chai Discovery funding rounds & valuation history
Chai Discovery, the San Francisco AI lab building foundation models (Chai-1, Chai-2) that predict and design molecules such as antibodies. Funding from the Seed (Sep 2024) to the Series B (Dec 2025), sourced to TechCrunch, Chai Discovery and Menlo Ventures.
Round history
Newest first. Dashed badges and striped rows are not closed transactions. “—” means the source does not disclose the figure or it cannot be computed on the same basis; see the note in each row.
| Date | Status | Round | Amount | Lead / buyer | Valuation | Val. ÷ run-rate | Source |
|---|---|---|---|---|---|---|---|
Closed round |
Series BRaised from General Catalyst and Oak HC/FT with Thrive Capital and others participating (Chai Discovery). |
$130M |
General CatalystWith: Oak HC/FT |
$1.3BReported (TechCrunch) |
—Not disclosedNo run-rate stated in the announcement |
||
Closed round |
Series AIncluding Menlo’s Anthology Fund, a partnership with Anthropic. |
$70M |
Menlo Ventures |
Not disclosedNo company valuation stated by the source |
—Not disclosedNo run-rate stated in the announcement |
||
Closed round |
Seed |
About $30M |
Thrive CapitalWith: OpenAI, Dimension Capital |
Not disclosedNo company valuation stated by the source |
—Not disclosedNo run-rate stated in the announcement |
Amount raised in each closed round
Amounts raised, not valuations: fewer than two closed rounds have a disclosed valuation.
Sources: TechCrunch, Chai Discovery, Menlo Ventures. US$ billions, linear scale.
Timeline
Each round and share sale, oldest first.
- 9 Sep 2024 · Closed
Seed: About $30M led by Thrive Capital.
- 6 Aug 2025 · Closed
Series A: $70M led by Menlo Ventures.
- 15 Dec 2025 · Closed
Series B: $130M at $1.3B led by General Catalyst.
Cite this dataset
Free to quote with a link back. Copy this citation:
Chai Discovery Funding Rounds & Valuation History. Private Valuation & Funding Round Tracker, GrowthNavigateFunding.net, updated 14 Nov 2026. https://growthnavigatefunding.net/funding/chai-discovery/
Download the data
The same 3 rows as the table: numeric US$ columns, empty cells where a figure is not disclosed, and a source URL for every row.
- File
chai-discovery-rounds.csv(UTF-8, comma-separated)- Stable URL
https://growthnavigatefunding.net/wp-content/uploads/2026/11/chai-discovery-rounds.csv- Columns
id,date,date_precision,status,transaction_type,round,amount_usd_low,amount_usd_high,lead_or_buyer,co_leads,valuation_usd_low,valuation_usd_high,valuation_basis,valuation_to_run_rate_multiple,multiple_bound,multiple_basis,step_up_vs_prior_closed,price_per_share_usd_low,price_per_share_usd_high,shares,source,source_url,other_source_urls,notes,last_updated- Updated
- (IST)
Methodology & status definitions
How each row is labelled and calculated.
Closed round
A primary round announced by the company or confirmed in the press, bringing new money to the company.
Valuation ÷ run-rate
Post-money valuation ÷ the run-rate the company stated in that announcement (GNF calc.). Where the run-rate is “crossed” or “over” a figure, the multiple is shown as “under X×”. No row qualifies here unless shown, so no multiple is invented.
What is not a separate row
Pharma partnership payments and secondary sales.
Updates & corrections
This page stays at one address and is updated in place; the “Last updated” date above drives the citation and the dataset metadata. Corrections: hello@growthnavigatefunding.net. Informational only; not investment advice.
Changelog
- : Dataset first compiled (AI-50 batch, not yet published).
Sources
- TechCrunch: OpenAI-backed biotech firm Chai Discovery raises $130M Series B at $1.3B valuation, 15 Dec 2025
- Chai Discovery: Announcing our $130M fundraise (Series B), 15 Dec 2025
- Chai Discovery: Announcing our $70M fundraise (Series A), 6 Aug 2025
- Menlo Ventures: Revolutionizing Antibody Design with AI: Why We're Backing Chai Discovery, Aug 2025
- Chai Discovery: Announcing our first fundraise (Seed), 9 Sep 2024