AI·
Humans caught 13.6% of dangerous commands. Claude Code's classifier caught 89%.
Anthropic makes auto mode the default in Claude Code on August 14. Its own study says the permission prompt was catching almost nothing.
Person
Simon Willison
RSSOpen-source developer, co-creator of Django, and one of the sharpest public voices on practical LLM use. Blog is a primary source for many AI posts here.
16 articles
First covered Apr 17, 2026, latest Aug 10, 2026
AI·
Meta's Muse Code: a terminal agent built for repos most devs never touch
Meta's Muse Code is in beta on macOS and Linux, priced at $1.25 per million input tokens. Meta's own benchmarks put it behind Claude Opus 5.
Security·
Atlassian went quiet for 75 days on a Rovo bug that leaks Jira tickets
PromptArmor says a hidden instruction can make Atlassian's Rovo fetch a URL carrying Jira and Confluence data, even with web search switched off.
AI·
Ten decade-old math problems fell to an unreleased OpenAI model, for about $2,000 of tokens each
OpenAI published ten results in math and theoretical CS from an internal build of Astra, with Lean 4 certificates for every proof. What that verification does and doesn't settle.
AI·
DeepSeek's new 304B agentic model now runs on a single 128GB workstation
Salvatore Sanfilippo repacked DeepSeek V4 Flash into a lossless MXFP4 GGUF that streams from SSD at over 20 tokens a second. The hardware bill, and where hosted still wins.
Web·
TypeScript compiled to native: Vercel's scriptc ships a 178KB binary with no JS engine
Vercel Labs open-sourced scriptc, a TypeScript-to-native compiler with no JS engine in the binary. Its README claims 2.4ms startup. Hacker News is not convinced.
AI·
Matt Lenhard found 49 relays reselling OpenAI and Anthropic tokens. The cheapest runs 97.8% below list.
Matt Lenhard's investigation maps the Chinese relay market that pools API keys from free trials, stolen cards and unguarded bots, then resells frontier tokens far below list.
AI·
Claude Sonnet 5: cheaper agents on paper, until you count the new tokenizer's tokens
Anthropic's Sonnet 5 lands as the default free model with near-Opus quality at a lower price, but a new tokenizer quietly inflates the English bill by 1.4x.
AI·
OpenAI added a Lockdown Mode to ChatGPT to blunt prompt-injection attacks
OpenAI shipped Lockdown Mode in ChatGPT to cut off the data-exfiltration step of prompt-injection attacks. Here's what it actually restricts and who should turn it on.
AI·
Claude Opus 4.8 flags the bugs it writes four times more often than Opus 4.7
Anthropic's Opus 4.8 posts 69.2% on SWE-Bench Pro, lets code flaws slip 4x less often, and ships parallel subagents in Claude Code. Here's what matters.
Web·
GitLab is cutting staff and killing its CREDIT values. The CEO calls it 'Act 2.'
CEO Bill Staples announced a restructuring he frames around agentic AI, retiring GitLab's six core values for three new operating principles. Exact layoff numbers come June 2.
AI·
DeepSeek V4 lands: 1.6T-param open MoE, 1M-token context, and SWE-bench within 0.2 of Opus 4.6
DeepSeek shipped V4-Pro and V4-Flash under MIT on April 24. V4-Pro hits 80.6% on SWE-bench Verified. V4-Flash is $0.14 in / $0.28 out.
AI·
Anthropic admits three Claude Code bugs quietly tanked quality for six weeks
Anthropic's April 23 postmortem names three bugs that degraded Claude Code between March 4 and April 20. Usage limits are being reset for every subscriber.
AI·
GitHub Copilot paused new signups and kicked Opus out of Pro. Here's what actually changed.
GitHub froze Copilot Pro/Pro+/Student signups on April 20 and moved Claude Opus 4.7 behind the $39 Pro+ tier. Agent workflows broke the old math.
AI·
Qwen 3.6-35B-A3B: the open MoE beating Opus 4.7 on Simon Willison's laptop
Alibaba's Qwen 3.6-35B-A3B is a 35B-param mixture-of-experts with only 3B active. Apache 2.0, runs on consumer GPUs, and it's already winning real tasks.
AI·
Claude Opus 4.7 is here, and the long-context benchmarks got worse
Anthropic's Opus 4.7 is state-of-the-art on SWE-bench and CursorBench, but independent tests show regressions on long-context retrieval and thematic reasoning.