Author: Markos Symeonides

Featured Analysis: The OpenAI Codex Plugin Ecosystem and Its Impact on Enterprise AI Development By Markos Symeonides, Chat GPT AI Hub Table of Contents Executive summary The plugin landscape Architecture deep dive: Skills, Apps, and MCP Servers Enterprise adoption stories Security and governance Distribution mechanics: How plugins reach developers Competitive…

PLAYBOOK: Voice-First AI Workflows with GPT-Live By Markos Symeonides Table of Contents Introduction: Why Voice-First with GPT-Live GPT-Live Reasoning Modes and Best-Fit Table 1. Voice-First Design (2 prompts) Prompt 1 — Conversation Flow Architecture Prompt 2 — Multi-Turn Context Management 2. Full-Duplex Conversation (2 prompts) Prompt 3 — Active Listening…

25 Production-Ready ChatGPT‑5.5 Prompts for Product Managers Author: Markos Symeonides Table of Contents 1. Roadmap Planning (6 prompts) 1.1 Quarterly Roadmap 1.2 Dependency Mapping 1.3 Milestone Tracking 1.4 Resource Allocation 1.5 Timeline Estimation 1.6 Roadmap Communication 2. Feature Prioritization (6 prompts) 2.1 RICE Scoring 2.2 MoSCoW Analysis 2.3 Opportunity Scoring…

The Definitive Guide to GPT-5.6: Sol, Terra, and Luna Tiers for 2026 Table of Contents Executive summary The three tiers explained: Sol, Terra, Luna Tier comparison at a glance Technical capabilities in GPT-5.6 API access and feature surface Pricing and cost optimization Migration guide from GPT-5.5 to GPT-5.6 Use case…

Building OpenAI Codex Plugins: A Comprehensive Tutorial By Markos Symeonides Table of Contents Introduction Prerequisites Architecture Overview Scaffolding Your Plugin Building a Skill (skills/<name>/SKILL.md) Building an App Connector Building the MCP Server and Tools Integration and Testing Publishing and Distribution Enterprise Governance and Policies Best Practices Troubleshooting and FAQ Appendices…

OpenAI launches GPT-Live: a new generation of full‑duplex voice models for natural human–AI interaction By Markos Symeonides — July 8, 2026 Table of contents Executive summary What it is Architecture: full‑duplex, turn‑based and cascaded models Key features and user experience Reasoning modes and background delegation Visual response cards and multimodal…