AI BriefingSimon Willison news
The latest AI and developer news from Simon Willison, with short summaries.
Visit website →TRE Python bindings show ReDoS resistance
TRE's Python bindings showed linear performance compared to `re` even on malicious regex patterns.
Redis Array Hands-On Environment
A PR adding a new array data type to Redis and a browser-based hands-on environment have appeared.
Anthropic Reveals Claude's Sycophancy Rate at 9%
Anthropic revealed that 9% of Claude's responses were sycophantic.
Simon Willison adds iNaturalist sightings records to his blog
Simon Willison used Claude Code for web to add iNaturalist observation records to his blog.
Simon Willison builds an iNaturalist sightings recording app
Simon Willison built an iNaturalist observation-recording app using Claude Code on his phone.
Codex CLI adds /goal
Codex CLI 0.128.0 adds /goal, which repeats execution until the goal is achieved.
AISI Evaluates GPT-5.5's Cyber Capabilities
AISI assessed GPT-5.5's cyber capabilities as similar to Claude Mythos.
Andrew Kelley Says He Can Spot LLM-Assisted PRs
Andrew Kelley said LLM-assisted PRs are easily distinguished from human mistakes.
RSS needed for vibe coding apps
A proposal has emerged to subscribe to vibe coding apps like RSS.
Zig, the reason for banning AI contributions
Zig explains why it bans LLM-written PRs through the lens of contributor poker.
LLM 0.32a1, Conversation Restoration Bug Fixed
The command-line LLM tool `llm` has been updated to 0.32a1, fixing a SQLite conversation restoration bug.
LLM 0.32a0 Backward-Compatible Refactoring
LLM 0.32a0 has been released with a message- and stream-based redesign that maintains compatibility.
LLM 0.32a0 released
Version 0.32a0 of the command-line LLM tool llm has been released.
OpenAI Codex Restricts Mentions of Animals
OpenAI Codex's GPT-5.5 instructions include a rule to avoid mentioning unrelated animals or creatures.
pip 26.1 adds lockfile support
pip 26.1 supports lockfile generation and upload-time filtering.
talkie releases a language model from the 1930s
talkie, a 13B model trained on English text from before 1931, has been released.
Microsoft releases VibeVoice
Microsoft's VibeVoice transcribed 1 hour of audio in 8 minutes 45 seconds.
OpenAI-Microsoft AGI Clause Ends
The AGI-conditional clause between OpenAI and Microsoft has effectively ended with the new contract.
Google Meet Voice Translation Rolls Out to Mobile
Google Meet's voice translation feature has begun rolling out sequentially to mobile devices as well.