- Students & Researchers: Ask questions, analyze PDF documents, and brainstorm ideas with ease.
- Writers & Content Creators: Get writing prompts, translations, editing help, and seamless content generation.
- Developers & Coders: Generate code snippets, debug problems, and explore programming concepts.
- Professionals & Business Users: Use real-time web search, reports, data insights, and document extraction.
- Multilingual Users: Communicate in English, Chinese, Spanish, Arabic, and more with support across 16+ languages.
- Casual Users & Enthusiasts: Engage in free, unlimited chats for fun, learning, or conversation.
How to Use Heck.ai?
- Visit the Website: No sign-up—just head to Heck.ai and start chatting.
- Enter Your Prompt: Ask anything from simple queries to coding help or PDF analysis.
- Enable Advanced Tools: (Optional) Create a free account to unlock ChatPDF and AI Search.
- Upload a PDF: Use ChatPDF to have AI summarize or extract data from documents.
- Use Web Search: Turn on AI Search to fetch real-time information during conversations.
- Review & Refine: Interact further to iterate responses or get clearer insights.
- Zero Registration Access: Jump into AI chat instantly, no sign-up needed.
- Integrated AI Search: Allows real-time web queries to enhance accuracy and relevancy.
- ChatPDF Functionality: Upload PDFs and ask targeted questions directly within the chat interface.
- Multilingual Support: Enables context-aware conversations in multiple languages.
- Completely Free & Unlimited: No paywalls or hidden fees for core features.
- Built on Official API: Uses the official ChatGPT API ensuring quality and reliability.
- True no-login access—ideal for quick, barrier-free usage.
- Up-to-date knowledge via web search integrated into chat.
- Supports PDF uploads—great for study or research assistance.
- Multilingual and code-savvy—versatile across user types.
- Lacks formal model transparency—unclear which GPT variant is used.
- UI may feel basic compared to polished, paid competitors.
- No enterprise-level support or compliance assurances yet.
- Advanced user features may require opting into account registration.
Free
$ 0.00
icon-DeepSeek V3DeepSeek V3
icon-DeepSeek R1 ProDeepSeek R1 Pro
icon-Gemini 2.5 FlashGemini 2.5 Flash
icon-ChatGPT 4o miniChatGPT 4o mini
icon-ChatGPT-4.1 miniChatGPT-4.1 mini
icon-Grok 3 miniGrok 3 mini
icon-Llama 4 ScoutLlama 4 Scout
Limited Chat
50 query/day
Basic Search
5 Search query/day
Ads
1 Ad/day
Unlimited
$4.99 /week
icon-OpenAI: o3OpenAI: o3
icon-OpenAI: o4 miniOpenAI: o4 mini
icon-ChatGPT-4.1ChatGPT-4.1
icon-ChatGPT 4oChatGPT 4o
icon-Grok 3Grok 3
icon-Llama 4 MarvickLlama 4 Marvick
icon-Claude Sonnet 3.7Claude Sonnet 3.7
icon-Claude Sonnet 3.7 (think)Claude Sonnet 3.7 (think)
icon-Gemini 2.5 ProGemini 2.5 Pro
And all basic models
Unlimited Chat
∞ Query/day
Unlimited Search
∞ Search/day
Ads
No ads
Genius Mode
upcoming in March 2025
Unlimited
$14.99 /month
icon-OpenAI: o3OpenAI: o3
icon-OpenAI: o4 miniOpenAI: o4 mini
icon-ChatGPT-4.1ChatGPT-4.1
icon-ChatGPT 4oChatGPT 4o
icon-Grok 3Grok 3
icon-Llama 4 MarvickLlama 4 Marvick
icon-Claude Sonnet 3.7Claude Sonnet 3.7
icon-Claude Sonnet 3.7 (think)Claude Sonnet 3.7 (think)
icon-Gemini 2.5 ProGemini 2.5 Pro
And all basic models
Unlimited Chat
∞ Query/day
Unlimited Search
∞ Search/day
Ads
No ads
Genius Mode
upcoming in March 2025
Unlimited
$99 /year
icon-OpenAI: o3OpenAI: o3
icon-OpenAI: o4 miniOpenAI: o4 mini
icon-ChatGPT-4.1ChatGPT-4.1
icon-ChatGPT 4oChatGPT 4o
icon-Grok 3Grok 3
icon-Llama 4 MarvickLlama 4 Marvick
icon-Claude Sonnet 3.7Claude Sonnet 3.7
icon-Claude Sonnet 3.7 (think)Claude Sonnet 3.7 (think)
icon-Gemini 2.5 ProGemini 2.5 Pro
And all basic models
Unlimited Chat
∞ Query/day
Unlimited Search
∞ Search/day
Ads
No ads
Genius Mode
upcoming in March 2025
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Editorial Note
This page was researched and written by the ATB Editorial Team. Our team researches each AI tool by reviewing its official website, testing features, exploring real use cases, and considering user feedback. Every page is fact-checked and regularly updated to ensure the information stays accurate, neutral, and useful for our readers.
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