Optimizely, Kontainer, CELUM
Side by side on what we have verified on each vendor’s own pages. Where a fact was not checked, the table says so rather than leaving a blank that reads as “no”.
Everything else
Verdict
Not checked
Not checked
Not checked
Price published
No
No
No
Billed on
Quoted per customer
Depends on configuration; several features are priced separately
Quoted per customer
Deployment
Cloud
Cloud
Cloud
Free plan
No
No
No
Free trial
No
Yes
No
Transparency index
0%
20%
0%
Most common complaint
Not one tier and not one figure on the pricing page
Feature-level add-on pricing makes the final figure hard to anticipate before a quote
The pricing page contains neither tiers nor figures
“Not checked” means exactly that: we have not verified it, not that the platform lacks it. Every other value was read off the vendor’s own pages on the date shown on each platform page.
What to ask on the demo
One question per platform, drawn from what actually goes wrong with it — not a generic checklist. Vendors run the demo; this hands the agenda back to you.
Optimizely
Not one tier and not one figure on the pricing page — ask them to answer this in writing before the trial.
Kontainer
Feature-level add-on pricing makes the final figure hard to anticipate before a quote — ask them to answer this in writing before the trial.
CELUM
The pricing page contains neither tiers nor figures — ask them to answer this in writing before the trial.
No email required — the page prints as it stands.