coding-agents

Claude Code vs OpenCode: Where Your Agent's Token Budget Actually Goes

A viral benchmark clocked Claude Code sending ~33k tokens before it even reads your prompt, versus ~7k for OpenCode. Here's what that overhead is, why the two coding agents differ so much, and how to cut your own context bill.

07/13/2026 · Model Evaluation · 8 min read

How to Evaluate Coding Agents: Benchmarks, Trajectories, and Where Scores Lie

A leaderboard number is the least reliable way to pick a coding agent. Here's a durable coding agent evaluation method that pairs benchmarks with trajectory review and real task economics.

07/09/2026 · Model Evaluation · 8 min read

Claude Fable: What Real-World Coding Actually Costs

Claude Fable is Anthropic's newer coding model, and one shipped open-source release gives us a rare concrete number: about $149.25. Here's what Claude Fable is, how to get access, and what a real project costs — every figure attributed to its source.

07/08/2026 · Model Evaluation · 6 min read

Stop Vibe-Checking Your Agents: Eval-Driven Prompt Optimization with DSPy

Agent prompt evaluation turns prompt tuning from guesswork into engineering. Here's how to build an eval set, use DSPy to optimize prompts against it, and regression-test your agents every time a new model drops.

07/07/2026 · AI Tutorials · 10 min read

Agent Skills, Explained: The Portable Format for Coding Agents

Agent skills let you package a capability once and reuse it across every coding agent. Here's what they are, why portable formats like QUALITY.md are emerging, and how an agent actually uses one.

07/05/2026 · AI Tutorials · 6 min read

Claude Sonnet 5 for Coding Agents: Is the Higher Cost-Per-Task Worth It?

Claude Sonnet 5 keeps Sonnet 4.6's sticker price but a new tokenizer inflates real cost-per-task by roughly 30%. Here's what that means for agentic and coding workloads — and when it's still worth it.

07/02/2026 · Model Evaluation · 7 min read