Theory of Change
Longview Philanthropy is a philanthropic advisory that connects wealthy donors with high-impact giving opportunities in catastrophic risk reduction. Founded in 2018 by Natalie Cargill (former barrister), originally as "Effective Giving UK" under Effective Ventures Foundation.
The stated theory of change, in Longview's own words: "Our goal is for every grant we recommend to help as many individuals as possible, as much as possible, counting everyone equally -- including future generations." Their grantmaking is "inspired by venture capital" -- they seek "neglected opportunities with high-reward potential" and accept high failure rates under a "hits-based giving" model.
The mechanism is: (1) identify the most neglected, high-impact funding opportunities across AI safety, nuclear weapons policy, biosecurity, and digital sentience; (2) investigate those opportunities through a two-stage process that includes an explicit "best case against" each grant; (3) recommend grants to donors through free, no-commission advisory services; (4) manage pooled funds (public and private) for donors who prefer to delegate.
Natalie Cargill on why Longview exists: "If you are a donor who's looking to give away large sums of money, want to do it really effectively, are overwhelmed about where to start... I wanted to set up the org to help those people." The gap Longview fills: between GiveWell (which serves smaller donors with a static list) and large foundations (which take years to build up).
What They Do
Scale of operations. As of March 2026, Longview has directed over $133M toward AI risk reduction. The 2025 target was $60M+; the 2026 target is $100M+/year. This makes Longview the second-largest channel for EA-aligned AI safety funding after Coefficient Giving.
Four funds. Frontier AI Fund (FAIF, private, $100K+ donors): raised $20M, disbursed $11.1M to 18 organizations in first 9 months. Emerging Challenges Fund (ECF, public, 2000+ donors): GCR-focused, published grant reports. Nuclear Weapons Policy Fund (private). Digital Sentience Fund (private, ~$2.5M unfunded pipeline).
Known grantees (partial). FAIF grantee names are not public. From other channels: CHAI ($70K), Harvard AI interpretability ($110K), ARC Evals/METR ($220K), NTI Bio ($100K), Blueprint Biosecurity, SecureDNA, MATS Research, 6 EU AI Act civil society organizations ($733K total), Council on Strategic Risks, Nuclear Information Project, Carnegie Endowment for International Peace, OECD AI Policy Observatory.
Technical grantmaking capacity. The $2-10M Hardware-Enabled Mechanisms (HEMs) RFP (February 2026) demonstrates sophisticated technical engagement -- covering location verification for AI chips, offline licensing, interconnect verification, workload attestation, and tamper resistance, with detailed technical specifications referencing current Nvidia hardware.
Donor events and convenings. Residential summits in Napa (April 2024) and Stockholm (September 2024) for "several dozen UHNW donors, advisors, and foundation leads." Stockholm event with Astralis Foundation featured deepfake and bioweapon demonstrations for Nordic philanthropists. A nuclear summit was planned for 2025.
OECD partnership. Ongoing collaboration across multiple directorates -- AI Policy Observatory, Strategic Foresight Unit, High-Level Risk Forum, Secretariat on Bio/Nano/Converging Technologies.
Nuclear program. Built to fill the gap when MacArthur Foundation wound down its nuclear security program (previously ~50% of all philanthropic nuclear funding). Carl Robichaud brought decade of Carnegie Corporation institutional knowledge.
Key People
Natalie Cargill -- Founder and President. Former barrister, Oxford, UN Human Rights Council. TED speaker (2023). Donor-facing and public communications. Network includes William MacAskill (co-hosted Davos dinner 2020), OECD, BBC, Nobel Laureates.
Simran Dhaliwal -- CEO (joined August 2019). Former Goldman Sachs equity research, CFA, Teach First, Oxford PPE. Day-to-day management, donor relationships, all departments report to her.
Carl Robichaud -- Director, Nuclear Weapons Policy. 10+ years at Carnegie Corporation nuclear security grantmaking. Compensation $163K base + $35K other (2024 US 990).
Team. ~24 people scaling to 35+ in 2026. Offices in London (primary), DC, SF. 6 AI grantmakers. Key AI staff come from GovAI/Oxford pipeline (Aidan O'Gara, Suryansh Mehta). Liv Boeree (professional poker player, science communicator) served as Chief Communications Officer until November 2024.
Money and Incentives
Revenue model. All services free to donors. No fees or commissions. Entirely funded by grants for operational support.
Largest operational funder. Coefficient Giving/Open Philanthropy: $22.25M across 10 grants (2022-2024). The single largest grant was $15.96M general support (October 2024). CG explicitly states it welcomes Longview as independent advisory capacity and refers donors to Longview.
2024 US entity financials (first 990 filing). Revenue: $9,999,060 (99.9% contributions). Total expenses: $3,267,936. Net assets: $6,771,088. Total liabilities: $33,622. Key compensated officers include Carl Robichaud ($163K + $35K), Matthew Gentzel ($126K + $14K), Olivia Boeree ($115K + $15K, departed 11/2024).
Named donors. Ben Delo (BitMEX co-founder, UK's youngest self-made billionaire, Giving Pledge signer -- pled guilty to Bank Secrecy Act violation Feb 2022, pardoned by Trump March 2025), Justin Rockefeller (also US board member), Martin Crowley, Tom Crowley, Likith Govindaiah, Rafael Albert. Only 6 donors named publicly.
FTX Future Fund. Longview received a $15M grant from FTX Future Fund in 2022, making FTX their second-largest institutional funder at the time. When FTX collapsed in November 2022, this represented a significant funding shock. The $15M grant appears to have been disbursed before the collapse (unlike some FTX grants that were promised but never paid). This episode illustrates the funding concentration risk that Longview itself now tries to address — the field's dependence on a small number of large funders creates fragility.
Additional funding. Founders Pledge lists Longview as a grantee. UK entity financial data (Longview Inc. Ltd, Companies House) was not accessed -- this is where most operational spending likely occurs (London HQ, majority of staff).
Structural tension. Longview's value proposition is providing "independent" advisory capacity to diversify AI safety funding away from CG concentration. But CG is Longview's primary operational funder ($22M+), and CG shares deal flow with Longview. CG says it recommends giving opportunities to external funders that are "2-5x as cost-effective" as its own marginal funding. The question is whether an organization primarily funded by the dominant funder can provide genuinely independent recommendations.
Anticipated Anthropic windfall. Transformer News (March 2026) names Longview as a likely beneficiary of Anthropic employee philanthropy. Seven co-founders have pledged 80% of wealth -- potentially $37.8B combined. This could significantly increase Longview's donor base and capital under advisory, but also deepens ties to a specific AI company's interests.
What Others Say
Conservative watchdog view. InfluenceWatch classifies Longview as "left-of-center," frames nuclear work as "disarmament" advocacy. This political positioning may limit access to right-of-center donors and policymakers.
Ecosystem critique (Transformer News, March 2026). "Organizations doing the kind of AI safety work that makes Anthropic look responsible may see a large influx of cash." PauseAI's Holly Elmore has accused CG of not funding her organization "because they serve Anthropic's interests." Stanford philosopher Leif Wenar: "Paying people to hold you accountable always carries inherent risks." By extension, Longview, which operates in the same ecosystem and shares deal flow with CG, faces the same structural critique.
CG's self-critique (October 2025). Coefficient Giving acknowledged it holds "a concentrated share of AI safety philanthropic funding" and said others can "correct our blind spots and make new bets." Named Longview and AISTOF as independent alternatives it is "glad" exist. This framing both validates Longview's existence and highlights the irony of the dominant funder funding its own alternatives.
EA governance concerns. A December 2022 EA Forum post ("Bad Omens in current EA Governance") specifically criticized Longview's Longtermism Fund for not disclosing spending. The fund was later renamed Emerging Challenges Fund with public reports. However, the newer FAIF (launched December 2024) is again private.
Direct criticism of Longview specifically is sparse. Most published criticism targets the EA/longtermism ecosystem broadly. This may reflect operational competence, organizational youth, low public profile as an intermediary, or grantee reluctance to criticize a funder.
What's Absent
No published conflict of interest policy despite managing $100M+/year in funding flows and having a board member (Justin Rockefeller) who is also a named donor. No disclosure, recusal, or whistleblower policies beyond EthicsPoint.
No public list of FAIF grantees. $11.1M disbursed to 18 organizations with no public accounting. The "inaugural disbursement report" is available only to potential donors giving $100K+.
No comprehensive grantee list. The $133M+ in directed AI risk reduction funding has no public accounting of recipients. The split between advisory recommendations (influence but not control) and direct pooled fund grants (Longview's control) is not disclosed.
No public annual report. No consolidated organizational data on financials, impact metrics, strategic priorities, or governance updates.
No external evaluation. No third party has assessed Longview's advisory quality, private fund management, or the outcomes of its grant recommendations.
UK entity financials not public. The bulk of Longview's operations likely run through Longview Inc. Ltd (UK), which is a company (not a charity) and has fewer disclosure requirements.
No evidence of funding confrontational AI safety approaches. Whether Longview has funded or considered funding organizations like PauseAI or MIRI is not publicly known.
Recommended Reading
TED Interview: Natalie Cargill (May 2024) -- The most unfiltered source on Longview's founding vision, how donor advisory works, the "$3.5 trillion" thought experiment, and responses to philanthropy critics. Natalie is candid about her disillusionment with human rights work and the gap she spotted. ted.com transcript
Transformer News: "Anthropic employees say they'll give away billions" (March 2026) -- Critical analysis of the AI safety funding ecosystem. Covers conflicts of interest from AI industry donors, groupthink risks, and the PauseAI funding exclusion. Names Longview as a key player. Best available counterargument to the donor advisory model. transformernews.ai
Hear This Idea: Carl Robichaud on Nuclear Risk (Feb 2023) -- 29K-word deep dive on Longview's nuclear program, the MacArthur gap, arms control history, and philanthropic strategy for risk reduction. Reveals how Longview thinks about long-term impact in a domain where "the best case scenario is that nothing happens." hearthisidea.com
CG: "AI Safety and Security Need More Funders" (Oct 2025) -- CG's case for why independent funders like Longview matter, with the revealing admission of its own concentrated funding share and evidence that external funders find 2-5x more cost-effective opportunities. coefficientgiving.org