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AgentVet Weekly — September 21, 2026

September 21, 2026

From the founderThe debate over slowing AI development down keeps going, and I keep landing in the same place: it only works if it's global. If the US pumps the brakes while adversaries keep moving at full speed, that doesn't make anyone safer. It just hands away whatever lead we have, or puts us further behind if we're already not ahead. Real safety needs a global agreement, not a unilateral pause. Worth watching this week: a new model called Jev claiming a real break from the usual LLM tradeoffs. It's significantly faster, significantly cheaper, and more reliable, with no hallucinations. The company's explanation is that it never generates free text at all, which is what removes the hallucination problem in the first place. The speed comes from parallel processing: it generates the entire output in a single query instead of token by token. If that holds up, it's a genuinely different approach, not just an incremental one. More on this soon.

TLDR AI

Claude + Cowork merge 🛠️, ChatGPT sponsored agents 💰, harness tax 🤖

Claude + Cowork merge 🛠️, ChatGPT sponsored agents 💰, harness tax 🤖 (TLDR AI) — read the full story for details.

Simon Willison

Self-generated prompt injections in compaction summaries

Self-generated prompt injections in compaction summaries In Our framework for reporting model misalignment OpenAI provide "six reports on unexpected or concerning model behavior we’ve observed in the last six months". This one here is my favorite: they caught some of their models

Simon Willison

Gemini Live audio

Tool: Gemini Live audio Google released Gemini 3.8 Live and 3.8 Live Extended Thinking today - two new speech-to-speech models that are a similar shape to OpenAI's GPT-Live family. I pointed GPT-6 Astra Extra High at the documentation and had it build me this web UI for trying ou

Latent Space

[AINews] AEF-1 standard emerges for Third Party Evaluators, as Xai, OpenAI, and Anthropic all cosign

[AINews] AEF-1 standard emerges for Third Party Evaluators, as Xai, OpenAI, and Anthropic all cosign (Latent Space) — read the full story for details.

Simon Willison

llm-keys-ui 0.1

Release: llm-keys-ui 0.1 This plugin solves a very specific problem. I've started using Codex Remote to run coding agents on various machines while controlling them from my phone. Sometimes I use those machines to hack on LLM projects, and occasionally that means I need to config

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