About
EvalClassics — Your Complete AI Evaluation & Development Platform
Building with LLMs means juggling providers, guessing at output quality, and stitching together tools that weren't made to work together. EvalClassics fixes that.
With EvalClassics, you can:
Test & compare prompts across 200+ LLMs — including open-source HuggingFace models — side by side
Evaluate outputs using LLM-as-a-Judge (GPT-5 & Claude) with detailed scoring and reasoning
Run experiments at dataset scale, track results row by row, and compare runs
Generate synthetic datasets tailored to your exact evaluation needs
Monitor everything with automatic tracing, cost breakdowns, and full message history
No more switching between playgrounds, spreadsheets, and evaluation scripts. Everything lives in one place.
We're early and actively building based on community feedback — would love for you to try it and tell us what's missing.