Software · head to head
Humanloop vs Zephyr Scale
The short version
- Only Humanloop has a free tier, so it costs nothing to try first.
- Each has a real cost: Humanloop the free plan caps at 2 members, 50 eval runs, and 10,000 logs per month; every tier above that requires contacting sales, with no self-serve paid plan published, as of August 2026.; Zephyr Scale split across separate Essential and Advanced editions plus a distinct Zephyr Enterprise on-premises product, so buyers must pick the right SKU before pricing applies
Where they differ
Only the attributes on which Humanloop and Zephyr Scale actually diverge.
| Attribute | Humanloop | Zephyr Scale |
|---|---|---|
| Starting price | Free | On request |
| Pricing model | freemium | subscription |
| Free tier | Yes | No |
Identical on both: platforms (Web), user rating (Not yet rated), category (Unknown).
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Humanloop
- The free plan caps at 2 members, 50 eval runs, and 10,000 logs per month; every tier above that requires contacting sales, with no self-serve paid plan published, as of August 2026.
Zephyr Scale
- Split across separate Essential and Advanced editions plus a distinct Zephyr Enterprise on-premises product, so buyers must pick the right SKU before pricing applies
Pricing, plan by plan
Humanloop
FreeNo published plan breakdown. See the Humanloop review.
Zephyr Scale
On requestNo published plan breakdown. See the Zephyr Scale review.
Which should you pick?
Choose Zephyr Scale if
Nothing in the data separates Zephyr Scale from Humanloop on the points above - pick on price and on how each one feels to use.
Questions people ask
- Is Humanloop or Zephyr Scale better?
- Neither clearly leads. Humanloop starts at Free and Zephyr Scale at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Humanloop or Zephyr Scale?
- Humanloop has a free tier; the other does not. Paid plans start at Free for Humanloop and On request for Zephyr Scale.
- Does Humanloop or Zephyr Scale run on more platforms?
- Both run on Web, so platform support will not decide this one for you.
- Can I use Humanloop for free?
- Yes. Humanloop has a free tier, so you can try it without paying. Zephyr Scale starts at On request.
Related pages
More on Zephyr Scale
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