# Syntropylabs > LLM evaluation and AI observability platform for engineering teams. Syntropylabs is a web platform that lets teams rigorously test and evaluate large language models (LLMs) before and after deployment. It supports text, voice, image, and video AI workflows. ## What it does - **Dataset-based evaluation**: Upload CSV datasets and run automated LLM benchmarks against them. - **Multi-model comparison**: Test the same dataset across multiple AI providers (OpenAI, Anthropic, Google Gemini, Mistral, Cohere, and others) side by side. - **Custom evaluators**: Define evaluation rules using custom prompts, LLM-as-judge, or statistical metrics (ROUGE, BLEU). - **Voice AI evaluation**: Evaluate voice agents with speech-to-text, LLM response, and text-to-speech pipelines — in batch or live session modes. - **Image and video evaluation**: Test image generation and video generation models. - **Playground**: Chat directly with any configured model to explore behavior before adding it to a formal evaluation run. - **Projects and organizations**: Multi-tenant workspace model — teams can organize evaluation work into projects within an organization. ## Who it is for Engineering teams and AI practitioners who need to measure LLM quality, compare model outputs, and make data-driven decisions about which models to use in production. ## Key concepts - **Evaluation rule**: A scoring criterion — either a custom LLM judge prompt, a predefined statistical metric, or both. - **Dataset**: A CSV file with input prompts and (optionally) reference answers. Outputs are generated by running a model against each row. - **Evaluation job**: A batch run that applies one or more evaluation rules to every row in a dataset and aggregates scores. - **Voice eval job**: A batch run using a full voice pipeline (STT → LLM → TTS) per row, or an interactive live session. - **Model catalog**: The user's saved model configurations (provider, model name, API key) reused across evaluations. ## Website https://syntropylabs.ai/ ## Crawlable URLs - Homepage: https://syntropylabs.ai/ - Blog index: https://syntropylabs.ai/blog - Sitemap: https://syntropylabs.ai/sitemap.xml - Robots: https://syntropylabs.ai/robots.txt