Anthropic and Gemini still release new pre-training checkpoints regularly. It's just OpenAI who got stupid on that. RIP GPT-4.5

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ianbutler 3 hours ago | parent [-]

All models released from those providers go through stages of post training too, none of the models you interact with go from pre-training to release. An example of the post training pipeline is tool calling, that is to my understanding a part of post training and not pre training in general.

I can't speak to what the exact split is or what is a part of post training versus pre training at various labs but I am exceedingly confident all labs post train for effectiveness in specific domains.

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Der_Einzige 3 hours ago | parent [-]

I did not claim that post training doesn't happen on these models, and you are being extremely patronizing (I publish quite a bit of research on LLMs at top conferences).

I claimed that OpenAI overindexed on getting away with aggressive post-training on old pre-training checkpoints. Gemini / Anthropic correctly realized that new pre-training checkpoints need to happen to get the best gains in their latest model releases (which get post-trained too).

	▲	ianbutler 3 minutes ago \| parent [-]
		If you read that as patronizing that says more about you than me personally, I have no idea who you are so your own insecurity at what is a rather unloaded explanation perplexes me.