← Blog Medium ↗ dev.to ↗ June 4, 2026 · 9 min read Claude Anthropic Prompt Engineering A/B Testing LLM Evals Share: Twitter LinkedIn Related posts Prompt'un daha iyi değil. Sadece daha iyi hatırlıyorsun. See the prompt before you ship it ← Prompt caching is the cheapest Claude optimization. Nobody measures it. Build the sandbox before you write a single tool →