Is the AI Prompt Playground free?

Yes, the Prompt Playground is completely free. You bring your own API keys (BYOK) to run prompts against GPT-4o, Claude 4 Sonnet, Gemini 2.5 Pro, and DeepSeek V3. Your keys are stored locally and never sent to our servers.

Which AI models can I compare in the Playground?

The Playground supports side-by-side comparison of GPT-4o, Claude 4 Sonnet, Gemini 2.5 Pro, and DeepSeek V3. Select multiple models to see how the same prompt performs across different LLMs.

Can I save my prompts in the Playground?

Yes, you can save prompts to your local browser storage for quick access. Pro users can sync saved prompts across devices via team workspaces.

Does the Playground support system prompts?

Absolutely. The sidebar includes a dedicated system prompt editor where you can define the AI role, persona, and constraints before running your user prompt.

How is the Playground different from ChatGPT?

Unlike ChatGPT, the Playground lets you test the same prompt across 4 models simultaneously, compare token costs and latency side-by-side, and use structured prompt templates. It is a professional testing environment rather than a conversational chat interface.

AI Prompt Architect

❖ AI Prompt Playground

Multi-Model LLM Testing Environment

System Prompt

Parameters0.7

Temperature

PreciseCreative

User Prompt

Ready to test

Select models from the top right, write your prompt, and click Run to compare outputs side-by-side.