AI chat for your best work
Chat with multiple AI models to find the best output.
Upload files, do research, use domain expert skills.
See it in action
Harness the intelligence of multiple AI models at once.
One conversation, every perspective
Every model has strengths and blind spots. Multichat lets you see them all at once.
Find the best answer in seconds
Responses stream in parallel, side-by-side. No tab-switching, no copy-pasting between apps.
Trust your results
When three models agree, you know the answer is solid. When they disagree, you know exactly where to dig deeper.
Get expert-level output from every model
Apply domain-expert Skills — SEO writer, analyst, document author — and compare how each model interprets them.
Control what each model sees
Send the same prompt to all models at once, or use split mode to send different prompts to each.
Stay current with real-time information
Models search the web for the latest data — compare how different AIs find and synthesize what they find.
Get multiple takes on your documents
Upload PDFs and images. See how each model interprets, summarizes, and analyzes your files differently.
Who is Multichat for?
Professionals who use AI daily and want quality, not AI slop.
Content Creators
Get five drafts from one brief. Compare tone, structure, and phrasing — then pick the best parts of each.
Marketers
Test creative angles across models, optimize SEO content, and research trending topics — all in one conversation.
Analysts
Cross-validate findings, challenge assumptions, and get multiple interpretations of the same data before making recommendations.
Consultants & Agencies
Deliver higher-quality work to clients by comparing approaches and backing recommendations with multiple AI perspectives.
45+ LLMs supported
Including the top open source models
Claude 3.5 SonnetClaude 3.5 SonnetClaude 3.7 SonnetClaude 3.7 SonnetClaude 3.7 Sonnet (T)Claude 3.7 Sonnet (Thinking)Claude 3.5 HaikuClaude 3.5 HaikuClaude 4 SonnetClaude 4 SonnetClaude 4 OpusClaude 4 OpusClaude 4 Opus (T)Claude 4 Opus (Thinking)Claude 4.5 SonnetClaude 4.5 SonnetClaude 4.5 HaikuClaude 4.5 Haiku
o3 minio3 mini
Gemini 2.5 FlashGemini 2.5 FlashGemini 2.5 Flash LiteGemini 2.5 Flash LiteGemini 2.0 FlashGemini 2.0 Flash
Grok 3 MiniGrok 3 MiniGrok 2 VisionGrok 2 Vision
DeepSeek V3.2 SpecialeDeepSeek V3.2 SpecialeDeepSeek V3 (Chat)DeepSeek V3 (Chat)
Mistral Large 2.1Mistral Large 2.1Mistral SabaMistral Saba
Kimi K2Kimi K2
Cogito v2 Llama 405BCogito v2 Llama 405BCogito v2 DeepSeek 671B MoECogito v2 DeepSeek 671B MoE
Qwen 3 MaxQwen 3 Max
GLM 4.5GLM 4.5GLM 4.6GLM 4.6
MiniMax M2MiniMax M2Claude 4 SonnetClaude 4 SonnetClaude 4.5 OpusClaude 4.5 OpusClaude 4.6 OpusClaude 4.6 OpusClaude 4.6 SonnetClaude 4.6 SonnetClaude 4.5 SonnetClaude 4.5 SonnetClaude 4.5 HaikuClaude 4.5 HaikuGPT-4oGPT-4oGPT-4o miniGPT-4o miniGPT-4.1GPT-4.1GPT-4.1 miniGPT-4.1 minio3o3o4 minio4 miniGPT-5GPT-5GPT-5 MiniGPT-5 MiniGPT-5 NanoGPT-5 NanoGPT-5.1GPT-5.1GPT-5.2GPT-5.2Gemini 3 FlashGemini 3 FlashGemini 3 ProGemini 3 ProGemini 2.5 ProGemini 2.5 ProGemini 2.5 FlashGemini 2.5 FlashGemini 2.5 Flash LiteGemini 2.5 Flash LiteGrok 4.1 FastGrok 4.1 FastGrok 4 FastGrok 4 FastGrok 4Grok 4Grok 3Grok 3DeepSeek V3.2DeepSeek V3.2DeepSeek V3.1DeepSeek V3.1DeepSeek R1DeepSeek R1Mistral Medium 3.1Mistral Medium 3.1Magistral Medium 1.2Magistral Medium 1.2Pixtral LargePixtral Large
Perplexity SonarPerplexity SonarPerplexity Sonar ProPerplexity Sonar ProPerplexity Sonar Reasoning ProPerplexity Sonar Reasoning ProKimi K2Kimi K2Kimi K2.5Kimi K2.5Qwen3 Max ThinkingQwen3 Max ThinkingQwen3.5 PlusQwen3.5 PlusQwen3 VL 235BQwen3 VL 235BQwen3 235B InstructQwen3 235B InstructQwen 3 Coder PlusQwen 3 Coder PlusQwen2.5-VL 32B InstructQwen2.5-VL 32B InstructGLM 5GLM 5GLM 4.7GLM 4.7Cogito v2.1 671BCogito v2.1 671BGPT OpenSource 20BGPT OpenSource 20BGPT OpenSource 120BGPT OpenSource 120BMiniMax M2.5MiniMax M2.5MiniMax M2-herMiniMax M2-herFrequently asked questions
Have more questions or just wanna talk prompts and evals? 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?
We support 45+ models across all major providers — Anthropic (Claude), OpenAI (ChatGPT), Google (Gemini), xAI (Grok), Perplexity, DeepSeek, Mistral, Kimi, Qwen, and more. New models 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, run structured Evals across models and prompts, and use Skills to get better results. You see which model actually works best instead of guessing.
Is it free?
Yes — there is a free plan where you get to try out Multichat (Skills included) and Evals with Lite and OpenSource models lile GPT 5 Mini, Gemini 2.5 Flash Lite, DeepSeek, Kimi, etc. Upgrade to use premium models (Gemini 3 Pro, Claude 4.5 Sonnet, GPT 5, etc), with more usage and available features.
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.
What are Evals?
Evals let you systematically compare models, prompts, and settings. Run the same prompt across multiple models, tweak temperature or thinking budgets, and see structured results — so you can make data-driven decisions instead of relying on vibes.
Who is the team behind PromptHQ.run?
PromptHQ.run is built by the team at GnoDesk. We built Multichat and Evals as internal tools to get better at using AI, and decided to make them publicly available.
Ready to talk with every AI at once?
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