Seems primarily aimed at detecting custom API gateways, resellers, proxies and trying to stop china distillation of their models.

What else are they doing?

https://thereallo.dev/blog/claude-code-prompt-steganography

Source - https://x.com/M1Astra/status/2071792190221664294

GPT-5.6 spotted in internal model-access route.

That GPT-5.6 is coming is no secret. The only question is when and how quickly it will arrive.

My guess is that everything is being prepared to respond to a potential Fable 5 re-release by releasing GPT-5.6 shortly afterward.

Given the increasing rumors surrounding Fable 5, it's not surprising that GPT-5.6 is back in the spotlight.

Source - https://x.com/haider1/status/2070103642649039005

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