R0020/2026-03-25/Q001/SRC04
Braintrust — What is prompt evaluation?
Source
| Field |
Value |
| Title |
What is prompt evaluation? How to test prompts with metrics and judges |
| Publisher |
Braintrust |
| Author(s) |
Braintrust team |
| Date |
2025 |
| URL |
https://www.braintrust.dev/articles/what-is-prompt-evaluation |
| Type |
Industry guide / methodology documentation |
Summary
| Dimension |
Rating |
| Reliability |
Medium-High |
| Relevance |
High |
| Bias: Missing data |
Low risk |
| Bias: Measurement |
Low risk |
| Bias: Selective reporting |
Low risk |
| Bias: Randomization |
N/A |
| Bias: Protocol deviation |
N/A |
| Bias: COI/Funding |
Some concerns |
Rationale
| Dimension |
Rationale |
| Reliability |
Provides the most detailed methodology description among sources. Vendor but content is methodology-focused rather than sales-focused. |
| Relevance |
Directly addresses how prompt evaluation works in practice, including the noise vs signal challenge |
| Bias flags |
Braintrust is a vendor in this space but the methodology content is largely vendor-agnostic |
| Evidence ID |
Summary |
| SRC04-E01 |
Evaluation methodology: golden datasets, LLM-as-judge, regression testing with noise mitigation |