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Sweep 28 Sep 2026 · 18:16Z Build v2.1.284 505 read Stable v2.1.277 Latest v2.1.284 Next v2.1.284 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.284 ·

Some system reminders stay separate for models that accept mid-conversation system text

On models that accept system messages mid-conversation, keyed system reminders are no longer merged into one block

Under the hood Internal Changes
JSON All of v2.1.284
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
System PromptArea: what it touches
Internal ChangesKind: in v2.1.284,
Internal ChangesSection of the release
What

Claude Code attaches short system reminders (notes to the model that it adds itself) to your messages. Some of these are folded together into a user message. For models that support system messages partway through a conversation, reminders that carry a key are no longer merged into the same block. They are kept as separate entries next to each other.

Why

This changes how reminders are packaged for the model on models that have this capability. Other models are unaffected.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtIt is not clear exactly how the separate entries are laid out, or which models have the capability.

See this entry in the whole of v2.1.284 →

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