Using Custom GPTs

OpenAI’s custom GPTs enable non-developers to build purpose-built AI assistants—automating workflows, enforcing output consistency, and enabling role-specific interactions—using natural-language configuration atop GPT-4 (including multimodal support).
Core Capabilities of Custom GPTs
Custom GPTs are GPT-4–powered agents (with vision support) configured via conversational UI: users define goals, upload knowledge files (PDF/Word/Excel/TXT), enable web search, or integrate proprietary APIs via OpenAI’s Actions API—no coding required.
Typical Use Cases
- Workflow Automation: e.g., auto-generating weekly reports by synthesizing Slack logs, Notion databases, and email threads;
- Output Consistency Enforcement: enforcing brand voice, legal compliance templates, or technical documentation standards (e.g., RFC-style API specs);
- Role-Specific Assistant Deployment: e.g., a ‘competitive analysis assistant’ for sales teams, pre-loaded with Gartner reports and internal product matrices, supporting multi-turn Q&A and chart generation.
Limitations & Notes
- Available only to ChatGPT Plus, Team, and Enterprise subscribers;
- All custom GPTs run exclusively on OpenAI infrastructure—no private model swapping or on-prem deployment;
- Actions API integrations require developer setup: OAuth 2.0 or API key authentication, plus endpoint registration and JSON Schema definition in the OpenAI platform.