MondAI Roundup - April 2026

MondAI Roundup has been presented by Dominik Lukeš since late 2024. It gives an overview of the AI news from the previous month and links them to key themes of interest. It runs every second Monday of every month at 12:30-13:30. We are now introducing a regular summary of the key lessons as well as a more detailed summary on AI News Roundup.

An unusually dense six-week roundup dominated by model releases that told a surprising story: the most interesting new models weren't the biggest ones. GPT-5.4 Mini finally caught up with Gemini Flash, Gemma 4 shipped under Apache 2 and ran on a MacBook Air, and Anthropic made the 1-million-token context window available at no extra cost. Chinese labs continued their rapid cadence -- GLM-5.1 became the first open-weight model to top SWE-Bench Pro.

The biggest announcement was Anthropic's Claude Mythos, revealed under Project Glasswing -- a model so capable at chaining security vulnerabilities that Anthropic chose not to release it publicly. Meanwhile, real-world supply chain attacks hit axios (300M weekly downloads) and litellm in the same week. OpenAI's acquisition of Astral (Ruff, uv) raised questions about who controls critical open-source infrastructure.

Coding agents became the new normal. Codex crossed three million weekly users. OpenAI matched Anthropic's pricing ladder with a new $100/month tier. The OpenClaw ecosystem matured fast enough that Microsoft hired a VP whose entire job is OpenClaw strategy. And Karpathy's AutoResearch showed what happens when you let agents run research in loops for hours.

For more details, read the companion reading or browse the presentation slides.

Key Stories

• GPT-5.4 Mini and Nano - OpenAI's mid-tier model catches up with Gemini Flash, now with proper agentic capabilities.
• 1M context GA - Anthropic makes the full context window available at standard pricing.
• Gemma 4 - Google's open model family, Apache 2, multimodal with audio, runs on consumer hardware.
• Project Glasswing / Claude Mythos - Anthropic's most capable model, restricted to security partners.
• GLM-5.1 -- first open-weight model to top SWE-Bench Pro.
• Gemini 3.1 Flash Live - smart, cheap live voice model with video.
• Supply chain attacks - social engineering hits axios and litellm.
• AutoResearch - Karpathy's autonomous research loops gain community traction.
• Codex hits 3M users - the $20/$100/$200 pricing ladder becomes the new normal.
• Muse Spark - Meta's comeback model from Superintelligence Labs, competitive but closed-weight.

Resources

• Detailed notes - expanded notes from the session transcript covering all major stories
• Presentation slides
• Quick reference index - searchable list of people, organizations, and links

Key Links

• GPT-5.4 Mini and Nano
• 1M context GA for Opus/Sonnet 4.6
• Gemma 4
• Claude Mythos / Project Glasswing
• GLM-5.1
• Gemini 3.1 Flash Live
• Gemini Embedding 2
• Cursor Composer 2
• Cursor 3 / BugBot
• Muse Spark
• MiniMax M2.7
• Cohere Transcribe
• Voxtral TTS
• Supply chain social engineering
• OpenAI acquires Astral
• AutoResearch
• Simon Willison's Agentic Engineering Patterns
• Claude Managed Agents
• Lyria 3 music generation

Next Session

11 May 2026 | Register