Foreseeing and reacting to globally impactful and existential catastrophes.

Sentinel protects against difficult-to-envision threats by forecasting near-term risks, detecting black swans earlier, and deploying our emergency response team to take mitigating action.

Even during global crises, independent operators can have a big impact.

Inspired by the work of groups like VaccinateCA, who were able to save thousands of lives by disseminating vaccine information more effectively than the US government, Sentinel generalizes this approach to crises that could lead to extinction-level events.

Our team members have been previously covered by…

Vox
Astral Codex Ten

Astral Codex Ten

Andreessen Horowitz
NASDAQ
WIRED
TechCrunch

TechCrunch

Team

Top forecasters from Samotsvety for the foresight team, diversely-skilled operators for the emergency respose team, and an ambitious leadership team.

The Foresight team’s goal is to monitor current events, update forecasts of these events leading to large-scale and existential catastrophes, alert the emergency response team when they deem the risk high enough, and support the emergency response team with ongoing forecasts if necessary. Crucially, the time-scales on which the Foresight team forecasts is that which judgmental forecasting is best suited to. Examples of events that could escalate into global risks are the invasion of Ukraine, cyberattacks/malfunctions, North Korean missile tests, or Sam Altman joking that “AGI has been achieved internally”.


In the event of a potentially upcoming catastrophe, the Foresight team alerts the Emergency Response team, then the public, then proceeds to work with the Emergency Response team to discern future scenarios and their probabilities.

Nuño Sempere

Cofounder & Head of Foresight

Vidur Kapur

Superforecaster – Samotsvety

Lisa

Superforecaster – Samotsvety

Tolga Bilge

Superforecaster – Samotsvety

Our newsletter tracks the greatest ongoing threats and assigns probabilities to escalation events.

Emergency Team Status: Closely Monitoring

Israel primed to enter Lebanon, next few days fraught with uncertainty around Iran’s response. Yet doesn't seem likely for this conflict to escape the region. Mpox and H5N1 continue. Read the full update

  1. An H5N1 pandemic starts and is declared by WHO

    By the end of 2025.

  2. Ukraine uses long-range missiles to attack inside Russia

    This year.

  3. Conditional on the above, Russia uses a nuclear weapon.

    In an act of war this year.

Emergency Team Status: Passive

The intensity of the Israel/Hezbollah conflict escalated when Israel exploded Hezbollah's pagers and walkie-talkies, monkeypox and H5N1 continue being worrisome, and fires in Brazil and adjacent countries burnt an area greater than Germany. Read the full update

  1. Israel invades Lebanon by the end of the year

  2. Russian invasion of Armenia in the next 12 months

Emergency Team Status: Passive

OpenAI released their new o1 models, which are more powerful and perhaps more dangerous. There was another assasination attempt on Trump. The US withdrew an aircraft carrier from the Middle East. And the US and UK are considering giving Ukraine permission to use long-range weapons against Russia. Read the full update

  1. Russia will use a nuclear weapon by the end of 2024

  2. >10 combatant deaths in conflict between NATO and Russia

Emergency Team Status: Passive

Mpox continues to spread, and Missouri detects H5 case with no known contact with animals. Read the full update

  1. H5 will be detected in the next two weeks in another community transmission case

    If it does, we get a pandemic

Emergency Team Status: Passive

Mpox cases in Africa are growing superlinearly, while vaccine procurement processes are slow. Read the full update

  1. SB 1047 to become law?

    per Manifold Markets

  2. Ground invasion of Lebanon by November?

    per Polymarket

Emergency Team Status: Passive

Mpox clade Ib continues to spread, with new cases detected outside Africa in Thailand and possibly in Honduras. Read the full update

  1. No new cases reported of claude Ib

    In the last two months of 2025

  2. Total death toll

    by the end of 2025

Emergency Team Status: Passive

The WHO did declare the latest Mpox outbreak to be a public health emergency. Sweden became the first country outside Africa to record a case of the Clade 1b variant. Read the full update

  1. At least 10 countries outside Africa record at least one new case of Mpox.

    By the end of the year.

    -

  2. More than 200 cases of Mpox recorded outside Africa

    By the end of the year.

Emergency Team Status: Passive

Mpox poses an increased risk to humanity with the news that the virus has spread to four new countries in Africa. Read the full update

  1. World Health organization declares current Mpox outbreak a Public Health Emergency of International Concern (PHEIC)

    In next 12 months.

Emergency Team Status: Passive

Hamas leader Ismail Haniyeh was assassinated in Iran, reportedly by Israel. Read the full update

  1. Iran retaliates

    In any form.

    -

  2. Iran retaliates

    In a way that results in >100 deaths.

    -

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