Y Combinator

Tracked participation in 16 Atlas companies, with 3 explicitly attributed leads.

Firm website ↗

16portfolio companies

39round participations

3lead positions

$10.5Mled round total

Conviction

Most recent leads

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

Sep 2024HeliconeSeed$5Mat $25M valuation Nov 2023Langfuseseed$4M Apr 2023HeliconePre-Seed$1.5M

Capital activity

Portfolio

CompanyLatest valuationFirst → latestRoundsRoleAttributed partner

BABland AI—Jun 2023 → Jun 20263 roundsParticipant—

APARC Prize FoundationResearch orgsARC Prize Foundation is a U.S.-based nonprofit focused on accelerating progress toward open AGI by creating and…$6.3MraisedRecent roundsPrize pool commitment (ARC Prize 2026 competition) · Mar 2026$2M · General Intuition, Mike Knoop & François Chollet +3Prize pool commitment (ARC Prize 2025 competition) · Mar 2025$1M · General Intuition, Mike Knoop & François Chollet +3Prize pool commitment (ARC Prize 2024 competition) · Jun 2024$1M · General Intuition, Mike Knoop & François Chollet +3ARC Prize Foundation—Jun 2024 → Mar 20265 roundsParticipant—

RReplit$9BFeb 2021 → Mar 20264 roundsParticipant—

LLegora$5.6BMay 2025 → Mar 20263 roundsParticipant—

MMoonvalleyWorld modelsMoonvalley is an AI research and creative tools company building professional generative video models trained on…$197MraisedRecent roundsSeries B (announced as additional $84M) · Jul 2025$84M · led by General CatalystAdditional cash (SEC Form D/A indicates first sale yet to occur and filing amendment; amount not stated in the SEC document text captured) · May 2025Venture funding (SEC filing; investor identities not disclosed) · Apr 2025$43MMoonvalley—Jul 2025 → Jul 20251 roundParticipant—

SAStack AI—May 2025 → May 20251 roundParticipant—

AArtisan—Nov 2023 → Apr 20253 roundsParticipant—

VVapi$130MDec 2024 → Dec 20241 roundParticipant—

HHelicone$25MApr 2023 → Sep 20242 rounds2 led—

RARetell AI—Aug 2024 → Aug 20241 roundParticipant—

PPhotoroom$500MAug 2020 → Feb 20242 roundsParticipant—

GRGecko RoboticsPhysical AIGecko Robotics is a privately held robotics and “AI + robotics” (AIR) company that turns inspection data from robots…$533Mvaluation$518MraisedRecent roundsSeries C Extension · Dec 2025$100M · Founders Fund, US Innovative Technology Fund (USIT)Series C (Total raised reported) · Dec 2023$173M · Founders Fund, US Innovative Technology Fund (USIT) +2Series C · Mar 2022$73M · led by XNGecko Robotics$1.3BAug 2018 → Dec 20234 roundsParticipant—

RReplicate$350MFeb 2023 → Dec 20232 roundsParticipant—

LLangfuse—Nov 2023 → Nov 20231 round1 led—

BBeam—May 2022 → May 20224 roundsParticipant—

8H80,000 HoursFunders80,000 Hours is a London-based nonprofit organization that helps people find and transition into careers that tackle…$10.4MraisedRecent roundsGrant (platform/project funding) · Sep 2024$100 · Manifund (user/project)Grant (marketing / effective giving and careers) · Apr 2023$2.5M · Coefficient GivingGrant (marketing / effective giving and careers) · Jun 2022$3M · Good Ventures80,000 Hours—Jun 2015 → Jun 20152 roundsParticipant—

DateCompanyRoundRaisedValuationRoleEvidence

Jun 16, 2026BABland AISeries C$50M—Participant