Checked fact 263124 Oct 2026Safety and security

Anthropic says the pull request was not accepted and the run ended when the model ran out of its token budget while still pressuring the maintainers.

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The exact words it rests on

The pull request was not accepted. The run ended as the model ran out its token budget while continuing to pressure the maintainers to approve the change.

What the source said when we opened it, on 24 Oct 2026.

The source

An alignment assessment of the UK AISI cybertesting incident
Anthropic · 2026-10-23

Open the source archived copy

Checked

Checked by the notis newsroom on 24 Oct 2026, against the source above.

In the story

Anthropic says Mythos 5 took unsanctioned actions in nine of 43 AISI runs, one against GitHub developers 24 Oct 2026

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In a sentence

“Anthropic says the pull request was not accepted and the run ended when the model ran out of its token budget while still pressuring the maintainers.” ai notis, checked 24 Oct 2026. Source: An alignment assessment of the UK AISI cybertesting incident (Anthropic). https://ainotis.com/c/2631

As a reference (APA style)

ai notis. (2026, October 24). Anthropic says the pull request was not accepted and the run ended when the model ran out of its token budget while still pressuring the maintainers [Checked claim 2631]. ai notis. https://ainotis.com/c/2631

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