# ClickHouse Release 25.10

DevFeed: [ClickHouse Release 25.10](<https://devfeed.tech/articles/clickhouse-release-25-10-5132.md>)

Original publisher: [Read original article](<https://clickhouse.com/blog/clickhouse-release-25-10>)

Author: ClickHouse

Published: 2025-11-07T00:00:00Z

Content type: release

Language: en

Sources: [ClickHouse Blog](<https://devfeed.tech/sources/clickhouse-blog.md>)

Topics: [clickhouse](<https://devfeed.tech/topics/clickhouse.md>), [Optimization](<https://devfeed.tech/topics/optimization.md>), [Replication](<https://devfeed.tech/topics/replication.md>), [AI search](<https://devfeed.tech/topics/ai-search.md>), [data](<https://devfeed.tech/topics/data.md>)

Tags: [bug-fixes](<https://devfeed.tech/tags/bug-fixes.md>), [clickhouse](<https://devfeed.tech/tags/clickhouse.md>), [cpu](<https://devfeed.tech/tags/cpu.md>), [improvements](<https://devfeed.tech/tags/improvements.md>), [memory](<https://devfeed.tech/tags/memory.md>), [new-features](<https://devfeed.tech/tags/new-features.md>), [optimization](<https://devfeed.tech/tags/optimization.md>), [performance](<https://devfeed.tech/tags/performance.md>), [release](<https://devfeed.tech/tags/release.md>), [replication](<https://devfeed.tech/tags/replication.md>), [search](<https://devfeed.tech/tags/search.md>), [vector-search](<https://devfeed.tech/tags/vector-search.md>)

## AI overview

ClickHouse 25.10 introduces 20 new features, 30 performance optimizations, and 103 bug fixes. The release includes join improvements, a new data type for vector search, and late materialization of secondary indices. One highlighted optimization, lazy columns replication, reduces CPU and memory usage by avoiding repeated physical copying of duplicated join values.

## Source excerpt

ClickHouse 25.10 is available. In this post, you will learn about join improvements, a new data type for vector search, late materialization of secondary indices, and more!