# Streamdown 2\.5 is now available

**Published:** March 16, 2026 | **Authors:** Hayden Bleasel, Ben Sabic

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Streamdown is a React component library that makes rendering streaming markdown content easy and beautiful. Built for AI-powered applications, it handles the unique challenges that arise when markdown is tokenized and streamed in real time.

v2.5 adds inline KaTeX support, staggered streaming animations, and a round of fixes for code blocks, CSV exports, and better Tailwind v3 compatibility.

**Streaming parser improvements**

The new `inlineKatex` option auto-completes `$formula` to `$formula$` during streaming, avoiding ambiguity with currency symbols, and the option defaults to `false`. Block KaTeX completion is also fixed when streaming produces a partial closing `$`.

Separately, single `~` between word characters (e.g. `20~25°C`) is now escaped to prevent false strikethrough rendering, controlled via a new `singleTilde` option that is enabled by default.

**Staggered streaming animations**

Streaming word and character animations now cascade sequentially rather than animating all at once. The timing is configurable via a new `stagger` option (default 40ms). Set `stagger: 0` to restore the previous behavior.

**Code blocks**

Custom renderers now receive the raw metastring from the code fence via a new optional `meta` prop, and the `lineNumbers` prop lets you disable line numbers.

Long lines now scroll horizontally instead of being clipped, completed blocks no longer re-render when new streaming content arrives, and unknown or truncated language identifiers fall back to plain text highlighting instead of throwing an error.

**Bug fixes**

`save()` now prepends a UTF-8 BOM for `text/csv` content, so Excel on Windows correctly detects encoding. Tailwind v4-only `*:last:` / `*:first:` syntax is replaced with arbitrary variant equivalents, fixing caret rendering in Tailwind CSS v3.

Read the [documentation](https://streamdown.ai/docs) to get started.

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📚 **More updates:** [View all changelog entries](/changelog/sitemap.md) | [Blog](/blog/sitemap.md)