Anthropic moved newer Claude models to dateless model IDs (still pinned)
Anthropic stopped issuing dated snapshot IDs for newer models (the 4.6 generation onward) in favor of dateless IDs. Per Anthropic's model docs these dateless IDs are still pinned snapshots, not floating pointers - so version pinning is intact.
Dateless IDs (4.6+) - pinning intact
Claude (Anthropic) did not respond inside the 30-day window. This receipt now reads as uncontested in the public record.
Newer Claude model IDs drop the date suffix but remain pinned to a specific snapshot rather than auto-updating to the latest model, per Anthropic's model docs.
Newer Claude model IDs drop the date suffix but remain pinned to a specific snapshot rather than auto-updating to the latest model, per Anthropic's model docs. Teams that hardcoded dated IDs may need to update identifiers, but the pinning guarantee - the defense against silent quality regressions - remains. Earlier community reports of 'pinning removed' conflated the dateless format with a loss of pinning. [Corrected 2026-06-10: the original framed this as removing pinning entirely; that was inaccurate - see /transparency.]
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Permissive (MIT) open-weight model targeting ChatGPT/Claude-class chat and agentic coding without API lock-in - the strongest open option for a self-hosted stack.
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