Author: Markos Symeonides

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…

Table of Contents Executive summary: Commerce approves GPT-5.6 for broad rollout The GPT-5.6 model family explained: Sol, Terra, Luna Why access was initially restricted to ~20 partners What changed: The Commerce Department’s decision and its implications Technical capabilities: What GPT-5.6 brings over GPT-5.5 Impact on developers: API access, pricing, migration…

Enterprise Playbook: Deploying OpenAI Codex with Governance-First Discipline Enterprise Playbook: Deploying OpenAI Codex with Governance-First Discipline The Complete Guide to ChatGPT and Codex Shared Context | How OpenAI’s $30 Billion Revenue Target Is Reshaping the AI Industry | Setting Up Gemini 3.1 Pro for Enterprise Deployments Table of Contents Introduction:…

30 Production-Ready ChatGPT-5.5 Prompts for Cybersecurity Professionals These prompts are engineered for practical use in SOC, DFIR, vulnerability management, and GRC programs. Each includes clear inputs, output requirements, and constraints to ensure repeatability and auditability. Table of Contents Introduction: How ChatGPT-5.5 Enhances Cybersecurity Workflows How to Use These Prompts Effectively…

OpenAI’s Superapp Strategy: Unifying ChatGPT, Codex, and Agents into the Enterprise Work OS OpenAI’s Superapp Strategy: Unifying ChatGPT, Codex, and Agents into the Enterprise Work OS Audience: CIOs, CTOs, Heads of Product, Engineering Leaders, Enterprise Architects, and AI Program Managers Table of Contents The Superapp Concept: What OpenAI Is Building…

Table of Contents Introduction: Why AI-powered vulnerability scanning matters in 2026 Prerequisites Architecture overview of the scanner Step 1: Setting up the project and dependencies Step 2: Building the code analysis module (static analysis with Codex) Step 3: Creating the CVE matching engine Step 4: Implementing the patch suggestion system…

OpenAI Makes GPT-5.5 Instant Mini the New Fallback in ChatGPT, Replacing 5.3: What Changes on July 6, 2026 On July 6, 2026, OpenAI updated ChatGPT’s default routing so that GPT-5.5 Instant Mini replaces GPT-5.3 Instant Mini as the fallback model served when users do not explicitly choose a model. The…