1. July 2026
  2. Let Claude pick a cheaper model for the boring parts (simonwillison.net)
    Engineering · · July 4, 2026 · Simon Willison · Claude Code · Agents
  3. A proxy that turns your prompt into a PNG to cut token costs (github.com)
    Engineering · · July 4, 2026 · Inference · Claude Code
  4. Anthropic drafts a severity scale for AI jailbreaks (anthropic.com)
    AI · · July 4, 2026 · Anthropic · Security · Safety
  5. Using DSPy to find a hidden bug in an agent's prompt (simonwillison.net)
    AI · · July 3, 2026 · Agents · Engineering · Evaluation
  6. Agents still fail most enterprise Java migrations (huggingface.co)
    AI · · July 3, 2026 · Agents · Benchmarks · Coding
  7. One transformer layer can match full RL fine-tuning (arxiv.org)
    AI · · July 3, 2026 · Research · Reinforcement Learning · Fine-tuning
  8. Claude Sonnet 5's new tokenizer quietly raises the real price (simonwillison.net)
    AI · · July 2, 2026 · Anthropic · Claude · Economics
  9. Cloudflare will block AI crawlers that hide their purpose (techcrunch.com)
    AI · · July 2, 2026 · Cloudflare · Policy · Web
  10. Mollick: work is shifting from chatting to assigning (oneusefulthing.org)
    AI · · July 2, 2026 · Agents · Productivity · Economics
  11. Claude Science pulls a researcher's tools into one workbench (anthropic.com)
    AI · · July 1, 2026 · Anthropic · Science · Agents