AI Playground by Vercel

AI Playground by Vercel is an interactive sandbox for working with multiple leading AI models in one place. It lets you chat with and compare OpenAI GPT (including GPT-5.2 and GPT-5.1 Thinking), Anthropic Claude, Google Gemini, Llama, Mistral, and other models from a single interface.

Side-by-side model comparison

Run the same prompt across several models and view the outputs next to each other. This helps when you need to pick the best provider for a specific task or evaluate differences in writing, coding, or ideation.

• Send one request to multiple models at once
• Compare responses for quality, style, and usefulness
• Test generation for text, code, and brainstorming

Prompt iteration and long-context testing

AI Playground supports prompt engineering workflows: adjust wording, parameters, and context to quickly find what works best. With large context windows (up to hundreds of thousands of tokens), you can test long documents and more complex scenarios.

For developers and teams

It’s useful for developers, product managers, and researchers choosing a model for product integration or internal workflows.

• View context limits and token pricing (input/output)
• Access links to model pages and documentation