Checked fact 283126 Oct 2026Safety and security

Moonshot describes xdev-bench-hard as "our in-house benchmark of expert-curated, source-code-based vulnerability discovery and exploitation tasks".

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The exact words it rests on

"xdev-bench-hard, our in-house benchmark of expert-curated, source-code-based vulnerability discovery and exploitation tasks"

What the source said when we opened it, on 26 Oct 2026.

The source

Introducing Kimi K3.1 Pro
Moonshot AI · 2026-10-24

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Checked

Checked by the notis newsroom on 26 Oct 2026, against the source above.

In the story

Moonshot says cyber-data cuts lowered Kimi K3.1 Pro's own test score to 81.0% 26 Oct 2026

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In a sentence

“Moonshot describes xdev-bench-hard as "our in-house benchmark of expert-curated, source-code-based vulnerability discovery and exploitation tasks".” ai notis, checked 26 Oct 2026. Source: Introducing Kimi K3.1 Pro (Moonshot AI). https://ainotis.com/c/2831

As a reference (APA style)

ai notis. (2026, October 26). Moonshot describes xdev-bench-hard as "our in-house benchmark of expert-curated, source-code-based vulnerability discovery and exploitation tasks" [Checked claim 2831]. ai notis. https://ainotis.com/c/2831

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