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Haystack 3.1: context compaction, token counters, AgentTool 💸
A real newsletter email from Haystack. Captured September 15, 2026.
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About this email
Captured Newsletter
Haystack newsletter announcing the Haystack 3.1 release with context compaction, token counters, and AgentTool, plus an upcoming Berlin unconference.
Top 'View in browser' link, full-width blue hero banner with Haystack logo, single-column body text with bullet points, a centered blue CTA button, and a dark navy footer.
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