Checkly vs Fiddler AI
Updated June 2026 · A structured head-to-head comparison.
AI observability and explainability.
The verdict
Both Checkly and Fiddler AI are credible monitoring tools, and the right pick comes down to your priorities.
Choose Checkly if you want a free plan to start on and a higher overall rating (4.7/5). Monitoring as code for developers.
Fiddler AI — AI observability and explainability.
Checkly vs Fiddler AI: side by side
| Dimension | Checkly | Fiddler AI |
|---|---|---|
| Starting price | Free – $80/mo | Free |
| Free plan | YesWinner | No |
| Pricing model | Freemium | Subscription |
| Best for | Developers, Devops Teams | Enterprise, Ml Teams |
| Platforms | Web, Api | Web, Api, Self Hosted |
| Rating | 4.7/5Winner | 4.4/5 |
Checkly key facts
- Vendor
- Checkly
- Pricing
- Freemium — Free – $80/mo
- Free tier
- Yes
- Platforms
- Web, Api
- Best for
- Developers, Devops Teams
- Editor rating
- 4.7 / 5
- Founded
- 2018
- Headquarters
- Berlin, Germany
Fiddler AI key facts
- Vendor
- Fiddler AI
- Pricing
- Subscription — Free
- Free tier
- No
- Platforms
- Web, Api, Self Hosted
- Best for
- Enterprise, Ml Teams
- Editor rating
- 4.4 / 5
- Founded
- 2018
- Headquarters
- Palo Alto, CA, USA
Frequently asked questions
Is Checkly better than Fiddler AI?
Neither is universally better — Checkly edges ahead on overall rating, but the best choice depends on price, platforms, and your use case. See the side-by-side table above.
Is Checkly or Fiddler AI cheaper?
Checkly is the more affordable of the two to get started, at free – $80/mo. Checkly starts at free – $80/mo; Fiddler AI starts at free.
Can Checkly replace Fiddler AI?
Yes for most teams — both are monitoring tools with heavily overlapping features. The main trade-offs are pricing and platform support, covered in the comparison above.