Technical

What is Responses API?

Definition

Responses API

The Responses API is OpenAI interface for sending messages to language models like GPT and receiving AI-generated responses, supporting advanced features like function calling, web search, and multimodal generation.

Understanding Responses API

The Responses API succeeds OpenAI Chat Completions API and offers a more flexible model for building AI agents. It supports built-in tools like function calling, web search, and code execution, plus server-side conversation state management. For WhatsApp chatbots, this API enables assistants that not only respond but act: they check calendars, search products, process orders, and perform follow-ups. Tecca uses the Responses API as the AI engine for its bots, leveraging function calling to connect AI with real business operations and generating natural responses that reflect each brand configured personality.

How Tecca helps

Responses API with Tecca

Tecca leverages responses api to help businesses automate their WhatsApp communications. Our AI-powered platform makes it easy to implement these strategies without any technical knowledge.

Related Terms

Function Calling (AI)
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Prompt Engineering
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Conversational AI
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Natural Language Processing (NLP)
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Where Responses API Applies

Meta Business Partner
Cifrado end-to-end
Soporte en español

FAQ: Responses API

Common questions about responses api

The Responses API is OpenAI newer, more capable interface that includes built-in support for tools like function calling, web search, and file search. It manages conversation state server-side and provides a simpler developer experience for building AI agents compared to the older Chat Completions API.
The chatbot sends the user WhatsApp message along with conversation history and available functions to the Responses API. The API returns either a text response or a function call request. The bot executes any functions, returns results to the API, and sends the final response back to the user via WhatsApp.
The Responses API supports various OpenAI models including GPT-4o for the best quality, GPT-4o-mini for cost-effective performance, and reasoning models like o3. For WhatsApp chatbots, GPT-4o-mini offers the best balance of intelligence, speed, and cost for real-time customer conversations.
No technical skills needed

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