Zulip Engineering Benchmarks
Communication & Notifications
GitHub
As of July 27, 2026, Zulip has 1,141 merged pull requests, 17.6 hours median cycle time, 11.9 hours median review time, and 26 active contributors in the last 90 days. AI-related signals appear on 3.9% of recent work.
Delivery Trend and AI Signals
PR Backlog (Humans)
Excludes AI agents and automation accounts.
PR Backlog (AI Agents)
AI coding agents only.
Cycle Time by AI-Related Signals
69.4h
with signals
66.9h
baseline
3.8%
difference
AI-Related Signals
10.0%
20 of 201 PRs show AI-related signals
Flagship Repositories
Repository Comparison
| Repository | PRs | AI Signals | Cycle Time | Review Time |
|---|---|---|---|---|
| Zulip flagship | 1141 | 0.0% | 32.2h | 5.7h |
Updated daily from public GitHub pull requests. Source: Tformance Open Source Analytics, updated 22 hours, 41 minutes ago.
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