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OpenAI's Astra becomes the main target for Chinese AI labs after Anthropic tightens its defenses

Chinese AI labs DeepSeek and Moonshot AI have shifted their model-distillation efforts to OpenAI's GPT-6 Astra after Anthropic tightened defenses on Claude, according to The Information. Anthropic says its new methods cut the amount of data attackers can pull by 90 to 99 percent, and in late September OpenAI reported a coordinated distillation campaign it says involved people linked to Moonshot. The reported targets include Moonshot's Kimi K3.1 Pro and DeepSeek's V4.1-Flash 1017, and distillation depends on extracting hidden reasoning steps that both OpenAI and Anthropic ban.

by read1 min views4 publishedOct 29, 2026
OpenAI's Astra becomes the main target for Chinese AI labs after Anthropic tightens its defenses
Image: The Decoder

Chinese AI labs are now mainly tapping OpenAI's most powerful model, GPT-6 Astra, instead of Anthropic's Claude. According to The Information, DeepSeek and Moonshot AI leaned heavily on Astra's outputs to train their latest models. People familiar with the matter say this includes Kimi K3.1 Pro and V4.1-Flash 1017.

This kind of distillation only works if the labs get the models to reveal their hidden reasoning steps. OpenAI and Anthropic both ban that. Moonshot declined to comment, and DeepSeek didn't respond to a request for comment. Claude used to be the go-to target, but Anthropic has tightened its defenses. The company says its new methods cut the amount of data attackers can pull by 90 to 99 percent.

In late September, OpenAI reported a coordinated distillation campaign that it says involved people linked to Moonshot. An OpenAI spokesperson said the company takes the problem very seriously, but until now attackers adjusted their tactics every time it rolled out a new defense.

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The Information

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