In this video, I'll be telling you about the latest AI coding model rumors and updates, including Anthropic's Claude Mythos 1, Claude Opus 4.8, and OpenAI's rumored GPT-5.6. We'll look at what is officially confirmed, what is still based on leaks, and how these models could impact Claude Code, Claude Security, Codex, and the future of AI coding agents.

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Key Takeaways:

🚀 Anthropic's Claude Mythos Preview is a real unreleased frontier model focused on coding and cybersecurity.
🛡️ Project Glasswing is using Mythos to help security teams and open-source developers find serious vulnerabilities.
📊 Anthropic says Mythos is on track to surface nearly 3,900 high or critical-severity vulnerabilities.
🧩 New leaks suggest Mythos 1 may be prepared for Claude Code and Claude Security workflows.
🏢 Anthropic may also be building a Claude Security dashboard for enterprise vulnerability tracking.
⚡ Claude Opus 4.8 is rumored to be in testing and may appear through platforms like Google Vertex.
🤖 GPT-5.6 rumors are growing through Codex logs, internal model tags, and early frontend generation leaks.
🧠 OpenAI has confirmed an internal reasoning model breakthrough, but it has not confirmed GPT-5.6.
📅 June could be a major month for AI coding if Mythos, Opus 4.8, or GPT-5.6 releases move forward.

AICodeKing

Leaked signals and official updates suggest a busy June for AI coding models. Anthropic's Claude Mythos (a frontier model with strong coding and cybersecurity capabilities) has already scanned 1,000+ open-source projects and may be heading to Claude Code and a new Claude Security dashboard. Claude Opus 4.8 is also rumored, spotted on Google Vertex, and could serve as a more accessible flagship upgrade for regular users. On the OpenAI side, GPT-5.6 labels have appeared in Codex routing logs and internal model tags (Iris Alpha, Ember Alpha, Beacon Alpha), though nothing is officially confirmed. OpenAI did confirm an internal reasoning model solved an 80-year-old Erdős math conjecture, hinting at stronger reasoning capabilities that could eventually reach Codex.

Mythos 1, Opus-4.8, GPT-5.6, Gemini 3.5 Pro (All Leaks Explained): JUNE IS GOING TO BE CRAZY!