9h ago

Anthropic updates Claude Opus 4.8 to support mid-conversation system instructions while preserving prompt cache hits

The change reduces API costs and latency for developers.

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Original post

I asked Opus 4.8 how Anthropic implements this. It told me @ClaudeDevs isn’t an official Anthropic account. True AGI. 😂

12:15 PM · May 29, 2026 View on X