Perplexity AI stands out for its real-time web search results and reliability. It gives source-cited answers, making it a good choice for fact-checking and academic and business research. ChatGPT is known for its conversational skills and creative text generation. It’s an option for brainstorming, writing, and natural dialogue with voice mode.

In this article, we discuss the features offered by the paid subscriptions of each tool, explore functions that can support work processes, and determine which tool is more suitable for business needs.

Perplexity Pro: strengths and weaknesses

Let’s explore the strengths and weaknesses of Perplexity Pro to see how it fits into your workflow.

Strengths

• AI-powered search assistant: Perplexity Pro version delivers real-time web searches that provide citations, which is incredibly helpful for fact-checking, research, and staying up to date with current information.
• Perplexity Circles and Spaces: Users can organize research discussions, invite collaborators to brainstorm ideas, and manage threads by project or topic, which is useful for group research and shared knowledge.
• Quick information retrieval: The platform provides accurate answers quickly, often pulling from premium sources for deeper research with direct links. This is especially valuable for business professionals and researchers who need reliable in-depth information fast.
• Advanced AI models and file analysis: Pro users can choose from multiple AI models (like GPT-4 Omni and Claude 3 Sonnet) and upload files (PDFs, CSVs, images) for analysis.
• Collections and Library: Users can add search threads to collections or their libraries for future reference. Collections allow users to organize and save threads with titles and descriptions.

Weaknesses

• No memory retention: Each session is independent—Perplexity Pro doesn’t remember previous chats or context (as of May 2025), so you’ll need to repeat instructions or re-explain your needs every time.
• Not ideal for business workflows: While you can share threads and organize research, Perplexity Pro lacks built-in tools for team collaboration, task management, or workflow automation that businesses often require.
• Information overload: The platform sometimes gives very detailed results, which can be hard to sort through without better filters.
• Occasional technical issues: Prolonged or intensive use may lead to slower response times or the need to refresh the platform, which can interrupt research flow.
• Limited conversational AI: Perplexity Pro is optimized for search and factual answers, but it doesn’t excel at deep, multi-turn conversations and can lose the thread of conversation.

Perplexity Pro is a powerful tool for real-time research and factual accuracy. It saves users’ time that they’d spend on search engines. But its limitations in memory and collaboration can be a drawback for teams and users who need persistent context and workflow support.

Dig deeper: Perplexity vs ChatGPT

ChatGPT Plus: strengths and weaknesses

Let’s look at what ChatGPT Plus does well, and where it might not fit every business need.

Strengths

• Conversational AI leader: ChatGPT Plus excels at generating creative human-like conversations, making it a good choice for brainstorming, content creation, and answering questions in a conversational style.
• GPT-4o access: Subscribers get access to the latest GPT-4o model, which offers improved reasoning, faster responses, human-like writing, image generation, voice dialogues. ChatGPT Plus provides more accurate and context-aware answers compared to the free version.
• Better at complex reasoning: ChatGPT Plus handles multi-step logic, creative writing, and nuanced problem-solving better than Perplexity.
• Performance: Plus users benefit from faster response times and priority access, even during peak hours, which helps maintain productivity.

Weaknesses

• Limited team collaboration features: The Plus plan is designed for individuals, not teams. There are no built-in tools or professional settings for shared knowledge management or collaborative workflows, making it less suitable for business teams compared to enterprise-focused solutions.
• Usage caps and customization limits: Daily usage is capped, and there’s no support for advanced integrations or custom GPTs at the Plus level.  
• Integration with other tools: ChatGPT can integrate with apps like Google Docs, Slack, or WordPress through plugins, but not via direct built-in connections.

ChatGPT Plus is a great choice for individuals who need advanced conversational AI and support for creative content generation. However, its lack of collaboration features can be a drawback for teams and business users.

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Related: ChatGPT Project: Best Ways to Organize AI Workflows

Tanka AI: a better alternative for memory-driven AI assistance

Tanka AI is the world’s first messenger with AI long-term memory. It stores and organizes conversations, files, and memos to create a centralized, evolving knowledge base. This allows its AI assistant to provide context-rich and accurate responses. Tanka's memory technology, MemGraph, structures knowledge hierarchically, enabling deeper reasoning and contextual connections compared to traditional AI chatbots.

AI-powered long-term memory

Tanka remembers your conversations, ideas shared in group chats, decisions, team’s knowledge, business contexts, and more. This persistent memory means you don’t have to repeat context or instructions every time you start a new session. Tanka’s AI long-term memory keeps your AI assistant updated with ongoing information, making interactions smoother and more productive.

AI search across all content

Tanka supports AI-powered search not only across internet sources but also within your company’s internal knowledge—chats, documents, emails, decisions, and more. This unified search delivers relevant information quickly and shows its source.  

Smarter research and writing assistance

Tanka’s smart replies are context-aware and based on stored memory, which helps provide accurate research and knowledge retrieval. Its AI assistants adapt to your team’s specific needs and past inputs, delivering answers and suggestions based on context.

Users can also trigger Smart Reply using their voice for faster responses. Simply click the voice icon in the message bar, and after speaking, choose to send it as a voice message (right button) or use AI Smart Reply to fine-tune your message (left button).

Data and AI knowledge management

The Team Wiki feature is a shared knowledge base that allows teams to organize information by project, department, or function. It serves as a foundation for AI assistants to generate responses.

With the Co-Memory feature, group chat members can upload documentation, reports, and other project materials into a shared memory space. This collective knowledge is accessible to everyone and continuously informs the AI assistant.

Team collaboration and workflow support

Tanka integrates directly with popular tools like Slack, Gmail, WhatsApp, and Notion, consolidating all your communication channels into a single platform. This helps teams coordinate better without switching between apps.

Best for professionals and businesses

Its long-term memory and multi-channel integration make Tanka a practical choice. It is ideal for SaaS teams, researchers, and business professionals who need an AI assistant that remembers, understands context, and supports team collaboration.

Read also: ChatGPT 5: What to Expect From the Next AI Breakthrough

AI tool comparison: Perplexity Pro vs. ChatGPT Plus vs. Tanka AI

Conclusion: why Tanka AI is the best choice for business

Perplexity Pro is a great AI tool for quick, accurate research, but it struggles with deep conversations or remembering your needs. ChatGPT Plus excels at creative tasks and complex dialogue, but lacks collaboration features. Tanka AI bridges this gap by combining memory retention, research insights, and team collaboration.

Here’s why AI long-term memory transforms assistance:

• Reduces repetition: AI memory eliminates the need to re-explain context, saving time and frustration.
• Improves relevance: By recalling past conversations and decisions, Tanka delivers personalized, context-aware responses.
• Improves team workflows: Memory-driven collaboration ensures everyone stays aligned, with instant access to shared knowledge across emails, chats, and documents.
• Adapts over time: Tanka’s neuroscience-inspired memory learns from interactions, refining its understanding of your team’s goals and preferences.

Memory isn’t just a feature-it’s the foundation for AI that truly understands. While both ChatGPT and Perplexity reset with each session, Tanka builds a persistent knowledge base, turning fragmented chats into actionable intelligence.

Looking for AI that remembers? Try Tanka’s AI memory-powered assistant today!