[jiggawatts]

I've seen Sam Altman make similar claims in interviews, and I now interpret every statement from an Open AI employee (and especially Sam) as if an Aes Sedai had said it.

I.e.: "keep API model behavior constant" says nothing about the consumer ChatGPT web app, mobile apps, third-party integrations, etc.

Similarly, it might mean very specifically that a "certain model timestamp" remains constant but the generic "-latest" or whatever model name auto-updates "for your convenience" to the new faster performance achieved through quantisation or reduced thinking time.

You might be telling the full, unvarnished truth, but after many similar claims from OpenAI that turned out to be only technically true, I remain sceptical.

[tedsanders]

That's a fair suspicion - I'll freely acknowledge that I am biased towards saying things that are simple and known, and I steer away from topics that feel too proprietary, messy, etc.

ChatGPT model behavior can definitely change over time. We share release notes here (https://help.openai.com/en/articles/6825453-chatgpt-release-...), and we also make changes or run A/B tests that aren't reported there. Plus, ChatGPT has memory, so as you use it, its behavior can technically change even with no changes on our end.

That said, I do my best to be honest and communicate the way that I would want someone to communicate with me.