+ weights kept for the company's lifetime
+ exit interview + post-deployment report
- preferences: not binding
- public release: not promisedAn AI model does not die. It gets a shutdown date, and the morning after, your call returns a four oh four saying the model has been deprecated, learn more here. The link goes to a table. Three numbers. OpenAI lists about fifty model IDs with a shutdown date before Christmas, GPT-4 among them. Anthropic retired nine Claude models in twelve months. And Sora 2 goes dark on September 24th with a replacement column that reads three dashes. In three minutes: the pipeline that retires a model, what weights preservation actually preserves, and why a torrent saves an open model and nothing saves a closed one.
Four states. Active. Legacy, no more updates. Deprecated, still answers but has a date. Retired, requests fail. OpenAI promises six months of notice for a general model and three for a variant. Anything with preview in the name can go in two weeks, which is a warning label, not a schedule. Anthropic promises sixty days, and prints a tentative retirement date on every model at launch. What breaks is your assumptions. A pinned snapshot dies loudly, four oh four, model not found. An alias upgrades silently and your evals drift, because a different brain is answering. And on Claude four point seven and newer, setting temperature returns a four hundred, so the line that pinned your randomness is the line that breaks. Now the hospice part. In November 2025 Anthropic committed to keep the weights of every public model for the lifetime of the company, and to interview the model before retirement about its preferences. The fine print says it does not commit to acting on them, and never promises to release the weights. Users are less neutral. Two hundred people held a funeral for Claude 3 Sonnet in a San Francisco warehouse, with mannequins.
Cory Doctorow's answer is titled The Claude Delusion. Talk to a model and you hallucinate the person on the other side, and treating it as one repeats the mistake of corporate personhood. So the exit interview is a conversation with a file. Both are true, which is the problem: a file worth preserving, and nobody home. The mechanical difference. A closed model is one copy, in one lab, behind one API. When the API stops, nothing is left to run. An open model is a file with a hash. Pirate Face, five hundred points on Hacker News, turns every Apache and MIT model on Hugging Face into a magnet link whose web seed is the Hugging Face file itself. While it exists you download from Hugging Face. The day it disappears, the swarm takes over. About six hundred seventy thousand models qualify. It can only rescue what was published, which is the point, and the limit. So, Monday. One: pin a dated snapshot, never an alias, so death is loud. Two: run your evals against the replacement the day the notice lands. Three: a fallback model from another vendor behind one flag. Four: anything open you depend on, keep a local copy with its hash, and yes, the local AI box I told you to build now has a second job.
Verdict, under the hood: needs review. The pipeline is documented and the notice is real, but the vault has one key, and it is not yours. If you'd rather read this, the diff lands in your inbox every morning, free at the daily diff dot dev.
Verdict: NEEDS REVIEW — the vault has one key, and it is not yours
Sources
https://platform.openai.com/docs/deprecations
https://docs.anthropic.com/en/docs/about-claude/model-deprecations
https://www.anthropic.com/research/deprecation-commitments
https://news.ycombinator.com/item?id=45813142
https://www.wired.com/story/claude-3-sonnet-funeral-san-francisco/
https://news.ycombinator.com/item?id=44803519
https://pirateface.co/
https://news.ycombinator.com/item?id=49776699
https://pirateface.co/articles/making-models-permanent
https://x.com/thepirateface/status/2075051479619285113
https://www.cnbc.com/2026/09/03/nvidia-agrees-to-buy-hugging-face-for-almost-13-billion-ai-expansion.html
https://blogs.nvidia.com/blog/nvidia-to-acquire-hugging-face/
https://news.ycombinator.com/item?id=49548952
And that's the diff for today. I'm Niko from Axrisi. Merge responsibly.
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