devtake.dev — Simon WillisonArticles on devtake.dev covering Simon Willison.https://devtake.dev/en-usOpenAI added a Lockdown Mode to ChatGPT to blunt prompt-injection attackshttps://devtake.dev/article/openai-lockdown-mode-prompt-injection/https://devtake.dev/article/openai-lockdown-mode-prompt-injection/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.Mon, 08 Jun 2026 10:15:00 GMTaiopenaiai-securityprompt-injectionllmai-agentsdieter-morelliClaude Opus 4.8 flags the bugs it writes four times more often than Opus 4.7https://devtake.dev/article/claude-opus-4-8-launch/https://devtake.dev/article/claude-opus-4-8-launch/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.Fri, 29 May 2026 07:20:00 GMTaiai-modelsanthropicclaudellmbenchmarksagentic-codingclaude-codeopus-4-7dieter-morelliGitLab is cutting staff and killing its CREDIT values. The CEO calls it 'Act 2.'https://devtake.dev/article/gitlab-act-2-workforce-reduction/https://devtake.dev/article/gitlab-act-2-workforce-reduction/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.Tue, 12 May 2026 10:00:00 GMTwebgitlablayoffsrestructuringai-agentsdev-toolsdevopsagentic-codingnaomi-parkDeepSeek V4 lands: 1.6T-param open MoE, 1M-token context, and SWE-bench within 0.2 of Opus 4.6https://devtake.dev/article/deepseek-v4-release/https://devtake.dev/article/deepseek-v4-release/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.Fri, 24 Apr 2026 21:30:00 GMTaideepseekdeepseek-v4llmai-modelsopen-weightsmoebenchmarksopen-sourcedieter-morelliAnthropic admits three Claude Code bugs quietly tanked quality for six weekshttps://devtake.dev/article/anthropic-claude-code-quality-postmortem/https://devtake.dev/article/anthropic-claude-code-quality-postmortem/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.Fri, 24 Apr 2026 11:30:00 GMTaiclaude-codeanthropicclaudeopus-4-7ai-agentsai-modelspostmortemsonnet-4-6dieter-morelliGitHub Copilot paused new signups and kicked Opus out of Pro. Here's what actually changed.https://devtake.dev/article/github-copilot-pro-plan-changes/https://devtake.dev/article/github-copilot-pro-plan-changes/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.Wed, 22 Apr 2026 11:30:00 GMTaigithub-copilotanthropicmicrosoftclaude-opusai-agentspricingdev-toolsdieter-morelliQwen 3.6-35B-A3B: the open MoE beating Opus 4.7 on Simon Willison's laptophttps://devtake.dev/article/qwen-3-6-35b-a3b-beats-opus-on-laptop/https://devtake.dev/article/qwen-3-6-35b-a3b-beats-opus-on-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.Fri, 17 Apr 2026 10:00:00 GMTaiqwenalibabaopen-sourcemoellmlocal-inferenceopen-weightsdieter-morelliClaude Opus 4.7 is here, and the long-context benchmarks got worsehttps://devtake.dev/article/anthropic-claude-opus-4-7-launch/https://devtake.dev/article/anthropic-claude-opus-4-7-launch/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.Fri, 17 Apr 2026 09:30:00 GMTaiclaudeanthropicopus-4-7llmbenchmarksmythosai-modelsdieter-morelli