PromptForge - AI Chat Studio

PromptForge is a powerful yet approachable workspace for exploring and comparing AI models in one place. Whether you are refining prompts, evaluating outputs, or simply curious how different models respond, PromptForge helps you move faster with clear, side by side results. You can use PromptForge just like any normal AI chat for everyday questions and conversations. But when you need more control, deeper comparisons, or advanced prompt testing, the powerful tools are right there when you want them. KEY FEATURES: - Compare multiple models at once - Send one prompt to multiple AI models and view their responses side by side in real time. Quickly spot differences and choose the best result. - Live streaming responses - Watch answers appear as they are generated and see which models respond fastest. - Multi turn conversations - Have natural back and forth chats with supported models, not just single prompts. Change model mid conversation. - Built in A/B testing - Test different system prompts, temperatures, or models using the same input. Ideal for prompt iteration and output evaluation. - Branch conversations - Start a new path from any message without losing your original context. Explore ideas freely and stay organized. - Broad model support - Works with leading AI providers, including Anthropic (Claude), OpenAI (GPT, o3, o4), Google (Gemini), xAI (Grok), DeepSeek, Mistral, Meta Llama, Perplexity, Qwen, and many more via OpenRouter. - Usage and cost tracking - See token usage and estimated costs for each query so you always know what you are spending. - Bring your own API keys - Use your own provider keys with no markup. Prefer a simpler setup. An optional subscription lets you use our hosted infrastructure. - Designed for both the iPhone and iPad - Dark mode support. Universal app and native looking user interface. Privacy: https://trypromptforge.com/privacy Terms: https://trypromptforge.com/terms