Messages API adds on-demand conversation compaction in beta
Tech · Releases · Mon, September 14, 2026
With the compact-2026-09-04 beta header, the top-level compaction parameter returns a signed compaction block summarizing prior messages, which you send in their place on later requests. You choose when to compact, it can run in the backgro
Every year
Also on Sep 14, 2026
| Date | Event | When |
|---|---|---|
| Mon, Sep 14, 2026 | Ganesh Chaturthi | 11 days ago |
| Mon, Sep 14, 2026 | 78th Primetime Emmy Awards | 11 days ago |
| Mon, Sep 14, 2026 | iOS 27 release | 11 days ago |
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- 2026-09-25: added to 2026-09-14