AI Playground by Vercel

Built by Vercelthe deployment platform behind Next.jsthe AI Playground was designed to help developers, researchers, and AI practitioners evaluate model behavior, tune prompts, and understand how different frontier models respond to the same inputs.

It serves as both an exploration sandbox and a practical evaluation tool for teams making decisions about which AI models to use in their applications.

The Compare Mode is the Playground's most distinctive feature. Users can run the same prompt against multiple models side-by-sideincluding GPT-4, Claude, Llama-3, and othersand see responses displayed in parallel columns for direct comparison.

This removes the time-consuming manual process of running the same prompt in multiple separate interfaces and copying results for comparison, compressing a multi-step evaluation workflow into a single synchronized operation.

Parameter tuning controls allow users to adjust model configuration settingsmost importantly temperaturefor each model independently within the same comparison.

This means users can not only compare default model behavior but also explore how each model responds to the same prompt at different creativity/determinism settings, revealing important behavioral differences that standard API defaults would obscure.

Immutable sharing links enable specific parameter configurations and prompt results to be shared with team members or stakeholders.