Zukko Blog
Guides to Claude Code, Cursor, Codex and the Claude and GPT APIs: setup, token savings and troubleshooting.
Where Qwen models fit in development work
3 min · · models
Qwen cost one and a half to three times less than flagships. Which tasks show no difference, and which do.
GPT-6 Astra through the API: setup and cost
3 min · · models
Setup takes one line. Here is the cost and a way to judge the model on your own work rather than on reviews.
Astra, Grok and Claude: how to choose between them
3 min · · models
Comparing what can actually be verified: price, window, rate shape. Plus a method for choosing under your own load.
context_length_exceeded — the context window is full
2 min · · errors
The model refused because your request does not fit. What makes up the context window and what to cut first.
Which model to choose when they all share one key
3 min · · models
When every model sits behind one key, the choice stops being technical and becomes economic. How to pick without overpaying.