Frequently asked questions
Have more questions? Email us at help@prompthq.run
What is Multichat?
Multichat lets you chat with many AI models simultaneously in side-by-side columns. Send one message, see how different models respond, and pick the best parts of each. It's like having your own council of experts. You can cross-validate answers and combine the strongest ideas.
What models do you support?
Choose from 50+ models, including GPT-6.1 Sol, GPT-6 Astra, GPT-6 Luna, Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, Claude Haiku 5.5, Gemini 3.8 Flash, and Grok 4.7. We also offer DeepSeek, Mistral, Kimi, Qwen, and more. Model access depends on your plan, and new releases are added regularly.
Why should I use PromptHQ over ChatGPT or Gemini?
ChatGPT and Gemini lock you into one provider. PromptHQ gives you all the top models in one place — premium and open source — so you can compare them side-by-side in Multichat and use Skills to get better results. You see which model actually works best instead of guessing.
Is it free?
Plans start at $3/mo with Almost Free, which includes 20+ capable models such as GPT-6 Luna and Claude Haiku 5.5, plus powerful open-source options. You also get expert Skills like Human Voice, Resume Reviewer, and SEO Writer. Plus and Max unlock additional premium models and more usage.
What are Skills?
Skills are specialized AI capabilities that help models perform specific tasks better — like writing SEO content, drafting documents, reviewing resumes, doing competitive analysis and more. Simply select a skill before you send your question.
Is my information private?
Yes. We will not sell or distribute your data. You can share your data with people you choose through our collaboration features.
Do you train your LLM on my data?
No. We don't run our own LLM — we route your requests to the providers you choose (Anthropic, OpenAI, Google, etc.). Your data belongs entirely to you.
How much usage do I get?
It depends on which models you use. Premium models like GPT-6 Astra and Claude Fable 5.1 consume more usage per message, especially in long conversations where the full history is resent each turn. GPT-6 Luna, Claude Haiku 5.5, and many open-source models cost much less and work well for routine tasks. To stretch your usage further, start a new chat instead of continuing a long one, and save premium models for tasks that need them. If it ever feels tight, email us at help@prompthq.run.