You can now make coding agents 10% smarter without touching the model. Coding agents rely on a "harness" of prompts, tools, and configurations that shape how they work. Tuning this harness is usually manual, slow, and breaks easily. A new paper introduces Agentic Harness
PROMPT ENGINEERING
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LLM Refusals and Context Window Name-Dropping Skepticism
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"Why are you so impressed? We know LLMs can coherently namecheck things alluded to in a context window." The refusal is 1,400 words long.
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New GPT-5.5 Prompting Guide Released by OpenAI
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You can find the new GPT-5.5 Prompting Guide here:
→ https://
developers.openai.com/api/docs/guide
s/prompt-guidance?model=gpt-5.5
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Free Masterclass: Build an Entire Startup Using Claude Design
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THIS GUY IS LITERALLY GIVING AWAY THE DESIGN PLAYBOOK FOR CLAUDE DESIGN 🤯
— Charly Wargnier (@DataChaz) 30 avril 2026
A Free 2-hour masterclass showing how to build an ENTIRE startup:
→ brand guidelines
→ decks
→ website
→ apps
→ videos
… using ONLY Claude Design.
Guide is below + full tutorial in 🧵 ↓ https://t.co/adr7Pa4jjs pic.twitter.com/tmapFcMvdoTHIS GUY IS LITERALLY GIVING AWAY THE DESIGN PLAYBOOK FOR CLAUDE DESIGN A Free 2-hour masterclass showing how to build an ENTIRE startup: → brand guidelines
→ decks
→ website
→ apps
→ videos … using ONLY Claude Design. Guide is below + full tutorial in ↓ -
Anthropic Growth Expert Shares Free AI Productivity Playbook
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ABSOLUTE GOLDMINE People pay thousands for AI consulting, then Anthropic’s Growth guy is casually giving the exact playbook away for Free #1 Build > Ask:
↳ Stop asking devs for internal tools!
He simply uses Claude Code to ship custom dashboards (like tracking App -
Prompt obsolescence: static instructions fail with evolving AI models
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But the complaint threads are missing the most important variable. Your prompts are static. The models are not. That prompt you wrote six months ago was optimized for a model that no longer exists. The instruction structure, the constraints, the output format. All calibrated
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GPT Image 2 Viral Prompt Recreates Images in MS Paint Style
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This GPT Image 2 prompt is going insanely viral right now. “Redraw the attached image in the most clumsy, scribbly, and utterly pathetic way possible. Use a white background, and make it look like it was drawn in MS Paint with a mouse. It should be vaguely similar but also not
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Base Model Release Sparks Experimentation With API Completions
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i havent done the work to compare it to peers but i'm just excited that we have a base model and honestly for all the people that complained about the death of the completions API (
@deepfates ? or deepfates adjacent) not enough people are experimenting with weird usages and -
Claude’s measurable strengths: iteration, exploration, filtering
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Claude’s superpower is measurable in output:
speed of iteration, number of paths explored, and how fast bad ideas get filtered out. Same model, different usage completely different power.