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.
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.
8 articles
First covered Apr 17, 2026, latest Jun 8, 2026
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.
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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.
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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.
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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.
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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.
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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.