A fact-by-fact comparison of OpenProject and Vikunja — sourced and dated — plus the part no generic comparison shows: which one AI assistants actually recommend more, engine by engine.
Measured by Orbatormethodology owner Henrik Tellewindow ends Sep 6, 2026
Recommendation share = the % of sampled AI answers, over a 4-week rolling window, that recommend each product. Higher is better.
CLAUDE
OpenProject
0.6%
Vikunja
0.1%
GEMINI
OpenProject
0.5%
Vikunja
0.2%
GROK
OpenProject
0.9%
Vikunja
0.4%
CHATGPT
OpenProject
0.4%
Vikunja
0.2%
PERPLEXITY
OpenProject
0.4%
Vikunja
0.1%
Integrations
Platforms
Does AI recommend OpenProject or Vikunja more?
OpenProject is recommended more often: it appears in 0.5% of sampled AI answers versus 0.2% for Vikunja, measured across the live AI engines over a rolling 4-week window.
How much do OpenProject and Vikunja cost?
OpenProject: Basic: $5.95 a month (free tier available). Vikunja: Self-Hosted: Free. Pricing is sourced from each vendor's own page and re-verified periodically.
Which AI engines were used to compare OpenProject and Vikunja?
Recommendation share is measured on CLAUDE, GEMINI, GROK, CHATGPT, PERPLEXITY using neutral, buyer-shaped prompts (no product names), aggregated over a 4-week rolling window. See the methodology for prompt design and sample sizes.
Own one of these products? Claim your profile to keep its facts accurate.
Recommendation share and entity resolution follow the Index methodology. Facts are sourced from each vendor's own pages and re-verified periodically. Customer status does not affect measurement. Free to use with attribution to orbator.io.
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