AI

Across 9 engineering blogs and benchmarks from May 2026, the failure modes of Claude Code, Cursor, Copilot, and Codex now have names and fixes.

Cursor Pro is $20/mo flat; Claude Code via API runs $6.60–$660/mo by workload. We ran the math across 3 usage tiers to find the exact crossover point.

Skip the allowlist queue. Five production-ready defensive AI tools — open weights, hosted APIs, and self-hostable stacks — that protect real apps today, with cost and integration notes.

The GPT-5.5-Cyber capability profile beyond OpenAI's marketing: Simon Willison's evals, the Trusted Access Program scope, and what the Five Eyes briefings actually covered.

Mythos and GPT-Cyber are locked. Open-source alternatives (CodeLlama Guard, Llama Guard 3, Cisco AI defense) are not. We compared both stacks on 4 defensive tasks—the honest results.

Claude Sonnet costs $3.00/1M input tokens; Cursor Composer 2 costs $0.50/1M. Switching saves $275/mo at Heavy workload, recovering migration cost in ~1 month.

We compared what Anthropic Mythos and OpenAI GPT-5.5-Cyber actually do on offensive testing tasks. Capabilities, refusal patterns, evals, and where each model breaks down.

The LLM observability category has 4 distinct tool types in 2026. Confusing a reverse proxy with an SDK tracer costs trace coverage — not just $59/mo.

Stop dumping server data in Zustand. The 4-quadrant model, TanStack Query for server state, Zustand for UI state, with Next.js 16 code.

export CLAUDE_CODE_NO_FLICKER=1

Compare Claude Code /advisor and claude-code-router. Real examples, when to use each, and a decision matrix for routing in May 2026.

Eight common Claude Code /advisor errors with cause and fix: model not found, MCP conflict, 429, context overflow, auth, hooks, quoting.