Oklo splits first atoms in test reactor as SMR developer advances toward commercialization

Oklo, a publicly traded small-modular-reactor startup, achieved first criticality in its test reactor, marking a technical milestone for the emerging SMR sector backed by significant venture and institutional capital.

First covered Aug 6, 2026 · 5:13 AM PT · 1 article · no longer in the live window

Oklo splits first atoms in test reactor as SMR developer advances toward commercialization — Image via canarymedia.com

Coverage

51d Canary Media Nuclear startup Oklo splits its first atoms in test reactor — Oklo , a publicly traded small-modular-reactor firm backed by OpenAI chief Sam Altman, has become one of the highest-profile companies working on…

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Appeared in: 2026-08-06 (#3) · 2026-08-07 (#8)

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