This will be evaluated according to the AI Safety Levels (ASL) v1.0 standard defined by Anthropic here.
This resolves based on the first clear public disclosure by Anthropic that indicates that they have trained a model and found it to qualify for ASL-3. If Anthropic announces a policy that would prevent this information from being disclosed, this will resolve N/A one year after that announcement. If Anthropic ceases to operate or announces that it has permanently ceased developing new AI systems, this will resolve “Never” after one year.
Note that the date in question is the date that the model that first reached ASL-3 finished training, not when the ASL-3 determination was made or reported.
Feel free to add new answer choices. Valid choices (besides “Never”) must be in the format YYYY QQ.
Update 2025-05-25 (PST) (AI summary of creator comment): The creator has provided new details regarding resolution, stating that it will focus on Opus 4:
The market will resolve based on the training end date of Opus 4.
This training end date will be determined by a poll (referred to as a "pole" in the comment), which will establish a "best guess".
The poll is planned to start approximately three months after the comment to allow for more information, including the possibility that a provisional ASL-3 determination for Opus 4 might be reversed.
Update 2025-11-24 (PST) (AI summary of creator comment): The creator has posted a resolution poll to determine when Claude Opus 4 training finished:
https://manifold.markets/Hedgehog/when-did-claude-opus-4-training-fin
The market will resolve based on the outcome of this poll.
Update 2025-11-25 (PST) (AI summary of creator comment): Knowledge cutoff date can be earlier than the training completion date. A March 2025 knowledge cutoff does not rule out training finishing before Q1 2025.
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@Hedgehog shouldn’t this resolve 2025 Q1 since according to this site the training data cutoff is march 2025 https://support.claude.com/en/articles/8114494-how-up-to-date-is-claude-s-training-data
Can’t be from before then?
@prismatic I agree that that should rule out any dates before Q1, but 'knowledge cutoff' can be earlier than 'finished training'.
For coarser-grained dates, see this and associated markets.