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Does ChatGPT have Function Calling?
YES
This feature is available.
Does ChatGPT have Function Calling?
ChatGPT supports Function Calling. Developers can define custom tools/functions that the AI can choose to invoke, returning structured JSON arguments to execute actions. ChatGPT is an industry-leading conversational AI model engineered by OpenAI for multi-domain problem solving and content creation.
- Tool
- 🤖 ChatGPT by OpenAI
- Feature
- Function Calling · Developer
- Status
- Yes, requires pro plan
- Pricing
- Requires Pro plan.
- Last verified
- 2026-08-05