UpTrain vs Fiddler AI
Side-by-side from the Top 11 ranking of The 11 Best LLM Evaluation Platforms (2026). Last verified May 31, 2026.
The short answer
UpTrain ranks higher on Top 11 (#6 vs #7) for ML engineers and AI product teams measuring model quality. Offers a flexible path from a powerful open-source library to a managed cloud platform.
At a glance
| UpTrain | Fiddler AI | |
|---|---|---|
| Top 11 rank | #6 / The 11 Best LLM Evaluation Platforms (2026) | #7 / The 11 Best LLM Evaluation Platforms (2026) |
| Score (out of 9.4) | 8.2 | 8 |
| Best for | Open-source flexibility | Enterprise model management |
| Pricing | $$ ($0 to $1,500/mo) | $$$$ (Custom Enterprise Pricing) |
| HQ | San Francisco, USA | Palo Alto, USA |
| Founded | 2022 | 2018 |
UpTrain
Offers a flexible path from a powerful open-source library to a managed cloud platform.
uptrain.ai/See full entry in The 11 Best LLM Evaluation Platforms (2026)
Fiddler AI
A mature, comprehensive platform for managing both LLM and classical ML models in the enterprise.
www.fiddler.ai/See full entry in The 11 Best LLM Evaluation Platforms (2026)
Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.