The original ChatGPT plugins system from 2023 has been replaced and significantly expanded in 2026 through two distinct systems: Custom GPTs (specialised ChatGPT instances for specific tasks) and Application Connectors (direct integrations with external tools and data sources). This ChatGPT plugins guide covers both systems — how they work, which ones are worth enabling, and how to create your own Custom GPT for your specific workflow. – chatgpt plugins guide 2026.
Custom GPTs — What They Are and How to Use Them
Custom GPTs are pre-configured ChatGPT instances built with specific system prompts, uploaded knowledge files, and tool access settings. OpenAI and thousands of third-party developers have built Custom GPTs for specific professional use cases — academic literature review, legal document analysis, code in specific frameworks, writing in particular styles, language tutoring, financial analysis, and more. Many are free; some require paid access.
To access Custom GPTs, click “Explore GPTs” in the ChatGPT sidebar. You can browse by category or search for a specific use case. A Custom GPT for, say, Python data analysis will have been pre-configured with Python-specific knowledge, appropriate context, and tools — producing better results for that specific task than a general ChatGPT conversation without that pre-configuration. – chatgpt plugins guide 2026.
How to Create Your Own Custom GPT
- 1Open the GPT builderIn ChatGPT, click your profile → My GPTs → Create a GPT. The builder interface walks you through setup with a conversation rather than a form.
- 2Write your system promptDescribe the role, tone, expertise level, and behaviour you want. This is the most important configuration step — a well-written system prompt produces dramatically better Custom GPT outputs.
- 3Upload knowledge filesAdd PDFs, text files, or documents as the GPT’s knowledge base. It can reference these in every conversation. Useful for company style guides, product documentation, or research materials.
- 4Enable toolsChoose which tools the Custom GPT can use: web search, image generation, code interpreter. Only enable tools the GPT’s specific use case requires.
- 5Set sharing permissionsKeep it private, share with link, or publish to the GPT Store. Published GPTs can be discovered and used by anyone — useful for building useful tools for your professional community.
Best Application Connectors in 2026
ChatGPT supports over 60 application connectors as of 2026. These allow ChatGPT to directly access, read, and in some cases write to external applications within your conversations. The most valuable professional connectors:
- Google Drive: Ask ChatGPT to find, read, summarise, or extract data from documents in your Drive without downloading them. Particularly useful for document analysis tasks across large shared repositories.
- GitHub: ChatGPT can access your repositories, review code, and discuss specific files or commits. Enables code review and documentation generation on actual repository content.
- Slack: Search Slack messages, summarise channels, and draft Slack messages based on conversation context. Useful for keeping up with threads in large organisations.
- Gmail and Google Calendar: Review your calendar, suggest scheduling options, draft email responses. Available natively through the Settings → Connectors menu on Plus and above.
- Salesforce: Access CRM data, summarise account history, and draft personalised outreach based on actual customer records. High value for sales teams on Enterprise plans.
⚠️ Data privacy with connectorsApplication connectors give ChatGPT access to data in external systems. Before enabling any connector, understand what data will flow through ChatGPT and whether your organisation’s data governance policies permit it. Business and Enterprise plans offer stronger data privacy guarantees — standard Plus connectors may use conversation data subject to OpenAI’s standard privacy terms.
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Frequently Asked Questions
What happened to ChatGPT plugins in 2026?
The original ChatGPT plugins system was replaced by two more capable systems: Custom GPTs (pre-configured ChatGPT instances with specific knowledge, system prompts, and tools) and Application Connectors (direct integrations with external tools like Google Drive, GitHub, Slack, and Salesforce). These systems offer more consistent behaviour than the original plugins, with better quality control and broader availability.
What are the best ChatGPT Custom GPTs?
The most consistently useful custom GPTs by category: for academic research — Scholar GPT; for data analysis — Code Interpreter-focused GPTs; for writing — various style-specific writing assistants; for legal documents — legal review GPTs with jurisdiction-specific training; for coding — language and framework-specific GPTs. Access all via “Explore GPTs” in the ChatGPT sidebar. Quality varies — test with your specific use case before relying on any Custom GPT for professional work.
How do I enable ChatGPT integrations with other apps?
Go to Settings → Connectors in ChatGPT. Available connectors are listed there with one-click enable/disable. Gmail and Google Calendar require OAuth authorisation — follow the prompts. GitHub, Slack, and Salesforce connectors require authentication with your account credentials. All connectors are available on Plus and above plans; availability may vary by enterprise configuration.
