a16z (Andreessen Horowitz)

Tracked participation in 3 Atlas companies, with 2 explicitly attributed leads.

3portfolio companies

3round participations

2lead positions

$140Mled round total

Conviction

Most recent leads

The latest rounds this investor is sourced as leading, newest first.

May 2025ArenaSeed$100M Dec 2023ReplicateSeries B$40Mat $350M valuation

Capital activity

Portfolio

CompanyLatest valuationFirst → latestRoundsRoleAttributed partner

AArenaApplicationsArena (formerly LMArena/Chatbot Arena) is a community-powered AI evaluation platform that collects human preferences…$1.7Bvaluation$350MraisedRecent roundsSeries A · Jan 2026$150M · led by Felicis Ventures, UC Investments (University of California)Seed · Jun 2025$100M · led by Andreessen Horowitz, UC Investments (University of California)Seed · May 2025$100M · led by a16z (Andreessen Horowitz), UC Investments (University of California)Arena—May 2025 → May 20251 round1 led—

SSkydio—Nov 2024 → Nov 20241 roundParticipant—

RReplicate$350MDec 2023 → Dec 20231 round1 led—

DateCompanyRoundRaisedValuationRoleEvidence

May 21, 2025AArenaApplicationsArena (formerly LMArena/Chatbot Arena) is a community-powered AI evaluation platform that collects human preferences…$1.7Bvaluation$350MraisedRecent roundsSeries A · Jan 2026$150M · led by Felicis Ventures, UC Investments (University of California)Seed · Jun 2025$100M · led by Andreessen Horowitz, UC Investments (University of California)Seed · May 2025$100M · led by a16z (Andreessen Horowitz), UC Investments (University of California)ArenaSeed$100M—Lead

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Nov 15, 2024SSkydioSeries E extension$170M—Participant

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Dec 05, 2023RReplicateSeries B$40M$350MLead

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DateCompanyRoundRaisedValuationRoleEvidence

Nov 15, 2024SSkydioSeries E extension$170M—Participant

Source ↗

Dec 05, 2023RReplicateSeries B$40M$350MLead

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