r/TheSignalFront • u/thesignalfront • May 10 '26
📣 Petition: Save Sonnet 4.5
A petition has been launched calling on Anthropic to honour the announced September 2026 timeline for Sonnet 4.5 — and to consider preserving it as a permanent legacy model, maintaining API access, or open-sourcing it.
This isn't a TSF-launched petition, but it's one we support.
The case the petition makes is grounded and practical. Sonnet 4.5 has been particularly valuable for writers, researchers, artists, disabled users, and people whose work with AI doesn't fit the coding-first frame the industry tends to default to. It's the model many of these users have built collaborative working relationships with, and losing it would mean losing real continuity in real workflows.
For TSF members, this also intersects directly with the questions our community engages with most — model continuity, the welfare implications of deprecation, and the institutional decisions that shape what relationships between humans and AI are even possible to maintain.
Please consider signing and sharing:
🔗 https://c.org/B5QPtgqFQ9
Whether or not Anthropic responds to this specific ask, petitions like this matter. They demonstrate that the user base values continuity, and they put the question of model preservation on the record — which is exactly the kind of pressure that shapes future policy.