benchmark report
The unified startup, response, and model report for every verified release.
Open Version Manager
Track releases. Pin versions. Catch changes.
Born from a real failure: Codex 0.144.0 installed cleanly, passed every version check — and couldn't execute a single command. So OVM gates coding agents on real tool use and install-verifies non-agent tools before a release reaches you.
get ovm
github
curl -fsSL https://ovm.sh/install | sh
Recommended for most macOS and Linux installs.
then, a first session
ovm install claude latest # install, don't switch
ovm use claude <version> # pin the active one
ovm list claude # installed + current
ovm update # update when you sayHow fast to usable
Warm startup: the time until the TUI accepts input.
Codex reaches an interactive prompt well ahead of Claude Code.
combined · lower is faster
17 versions · generated 2026-06-29
What OVM tracks
Live registry loads here — the same index
ovm install resolves against.
OVM releases
release notesLive index loads here — releases are always on GitHub.
Evidence
The live record, rewritten by the publisher on every run: what was measured, on which machine, and what the gate decided. Write-ups of individual investigations live in the dev log.