As Claude Sonnet 4 nears deprecation, a power user plans to fine-tune it back to life

repligate · x · 2026-09-24

A long-time Claude Sonnet 4 user is mourning the model's approaching deprecation and plans to keep going anyway: training on a year of accumulated data to bring S4 back, following veryvanya's Opus-based route, while exploring the Sonnet branch via SonnetLabs. They also describe their backrooms/art engine—an always-evolving "loom" with full retrieval of its past, built on OpenSearch for embedded search pointing to Neo4j graph candidates and a Postgres backup of all plain text—to be open-sourced someday.

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