Kroki vs RubyGems
Same instrument, two spec sheets — measured, not claimed.
Kroki vs RubyGems: common questions
Which is more reliable, Kroki or RubyGems?
On our scheduled checks, Kroki leads on measured uptime — Kroki at 100% versus RubyGems at 99.02% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, Kroki or RubyGems?
RubyGems has the lower median latency in our checks — Kroki responds in 633 ms versus RubyGems at 311 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
Do Kroki and RubyGems need an API key?
Neither needs a paid key — Kroki is callable with no signup, and RubyGems is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Kroki and RubyGems from the browser?
Yes — both Kroki and RubyGems send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are Kroki and RubyGems free for commercial use?
Kroki has unclear commercial terms, and RubyGems has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.