26.5.12 v1.6.6

medium risk

droidrun/mobilerunMay 12, 2026 → May 13, 20261 day between releases

What's New

CodeChunker rewrite delivers ~44% faster indexing and 14-18% lower query latency with slightly better search quality.

New Features

  • Rewritten CodeChunker with substantially faster indexing and lower query latency.
  • Search quality improved slightly, with NDCG@10 rising from 0.854 to 0.856.

Improvements

  • Index time cut by roughly 44.5% (about 5.1s down to 2.9s) in the published benchmarks.
  • p50, p90, p95 and p99 latencies reduced by 14-18% across the board.
  • Dependency bumps for urllib3, langchain-core, mako and authlib.
  • turbopuffer requirement widened to >=1,<3, allowing a broader range of versions.

Upgrade Notes

No migration steps are described; the change is a drop-in performance update to the chunking path. Verify that your pinned turbopuffer version still satisfies the widened >=1,<3 constraint and re-run any search-quality baselines, since chunk boundaries may shift. Note the versioning scheme jumps from a date-style tag (26.5.12) to semver (v1.6.6), so pin explicitly rather than relying on ordering.

The Two Releases

26.5.12

26.5.12

May 12, 2026· 5 months ago

Minimal release notes: "* Update dependencies in https://github.com/fregante/GhostText/pull/349 **Full Changelog**: https://github.com/freg"

Full release notes
v1.6.6

v1.6.6

May 13, 2026· 5 months ago

Significant performance improvements for CodeChunker, including faster indexing and reduced latency across various metrics.

Full release notes