AI Development in March 2026

Executive Summary March 2026 marked a consolidation phase in which “AI capability” increasingly meant operational capacity: models that can reliably act across tools, apps, and workflows—not just converse. Several leading labs shipped upgrades explicitly optimized for professional and agentic work (spreadsheets,…

GPT-5.4 and the March 2026 ChatGPT Upgrade Cycle: Official Release, Media Narratives, and Real-World Reactions

Introduction On March 5, 2026 (US time), OpenAI released GPT-5.4 across three surfaces at once: ChatGPT (as “GPT-5.4 Thinking”), the OpenAI API (as gpt-5.4), and Codex. In the same rollout, OpenAI also introduced a higher-end variant, GPT-5.4 Pro (gpt-5.4-pro), positioned for maximum performance…

AI Agent Startups Trends 2023–2026

Executive Summary Across January 2023 through February 2026, “AI agents” shifted from experimental LLM wrappers into a distinct product and investment category characterized by (a) tool-using autonomy, (b) workflow-native integration (CRM, ticketing, IDEs, finance/HR back office), and (c) a rapidly emerging governance and security…

You Missed

Why Conceptual Investigation?
AI Development in March 2026
GPT-5.4 and the March 2026 ChatGPT Upgrade Cycle: Official Release, Media Narratives, and Real-World Reactions
AI Agent Startups Trends 2023–2026
The Rise of Generative UI Frameworks in 2025–26
Will OpenAI Prism accelerate scientific research?
Considering AI and Communism
Order in the Age of AI
Where Should AI Memory Live?
2026 Will Be the First Year of Enterprise AI
Does the Age of Local LLMs Democratize AI?
Data Science and Buddhism: The Ugly Duckling Theorem and the Middle Way
Google’s Gemini 3: Launch and Early Reception
AI Governance in Corporate AI Utilization: Frameworks and Best Practices
AI Mentor and the Problem of Free Will
The AI Bubble Collapse Is Not the The End — It Is the Beginning of Selection
Notable AI News Roundup: ChatGPT Atlas, Company Knowledge, Claude Code Web, Pet Cameo, Copilot 12 Features, NTT Tsuzumi 2 and 22 More Developments
KJ Method Resurfaces in AI Workslop Problem
AI Work Slop and the Productivity Paradox in Business
OpenAI’s “Sora 2” and its impact on Japanese anime and video game copyrights
Claude Sonnet 4.5: Technical Evolution and Practical Applications of Next-Generation AI
Global AI Development Summary — September 2025
Comparison : GPT-5-Codex V.S. Claude Code
【HRM】How a Tiny Hierarchical Reasoning Model Outperformed GPT-Scale Systems: A Clear Explanation of the Hierarchical Reasoning Model
GPT‑5‑Codex: OpenAI’s Agentic Coding Model