OpenAI Chat Completions API Deep Dive: Messages, Roles, and Parameters
Understand the message format, system/user/assistant roles, temperature, max_tokens, top_p, and other parameters that control OpenAI chat completion behavior.
11 min read
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AI Voice Agent Insights & Guides
Browse older CallSphere articles on AI voice agents, contact center automation, and conversational AI.
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OpenAI Embeddings API: Creating Vector Representations of Text
Learn how to generate text embeddings with OpenAI's API, understand embedding dimensions, implement batch embedding, and build practical search and similarity applications.
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OpenAI Fine-Tuning API: Training Custom Models Step by Step
A complete walkthrough of fine-tuning models through the OpenAI API, covering data preparation in JSONL format, file upload, training job creation, evaluation, and deploying your custom model.
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OpenAI Function Calling: Letting LLMs Interact with Your Code
Master OpenAI's function calling feature to let language models invoke your Python functions, parse structured arguments, and build tool-augmented AI applications.
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OpenAI JSON Mode and Structured Outputs: Reliable Data Extraction
Master OpenAI's JSON mode and structured outputs to extract reliable, schema-validated data from LLMs with guaranteed format compliance and Pydantic integration.
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OpenAI Launches Operator 2.0: Autonomous Web Agents Now Handle Multi-Step Purchases
OpenAI's upgraded Operator 2.0 can now complete complex multi-step web tasks including purchases, bookings, and form filling autonomously with built-in safety guardrails.
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OpenAI SDK for TypeScript: Building Chat Completions and Tool Calling in Node.js — Openai node.js sdk 4.x chat.completions.create example
Openai node.js sdk 4.x chat.completions.create example: A hands-on guide to the official OpenAI TypeScript SDK. Learn how to set up the client, create chat completions, implement function calling with tool definitions, and stream responses in a No…
11 min read
OpenAI Structured Outputs: Using response_format with JSON Schema — Openai responses api response_format json_object
Openai responses api response_format json_object: master OpenAI's structured outputs feature with json_schema response format, strict mode, refusal handling, and complex schema definitions. Get guaranteed valid JSON from GPT models every time.
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OpenAI Vision API: Building Applications That Understand Images
Learn how to use OpenAI's Vision API to analyze images, send base64-encoded and URL-based images, build multi-modal prompts, and create practical image understanding applications.
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