AI & models
Choose an AI, set up free models, fix errors, and get better results.
6 articles
- Which AI should I use?Claude Code, Codex, Gemini, or Bricklayer chat: a quick way to decide, including if you do not want to pay anything.
- Set up free AI with an OpenRouter keyCreate a free OpenRouter key, paste it into Bricklayer chat, and pick a free model, in about five minutes.
- “Rate limited” or 429 errors from your AIWhat a 429 means, how long to wait, and how to make free limits last longer.
- The AI is not responding or shows an errorChat stuck, blank replies, or an authorization error? Check the key, the model, and the connection, in that order.
- Write prompts that get good resultsSix habits that make any AI, especially a free one, build what you meant on the first or second try.
- Review, approve, and undo AI changesHow Bricklayer’s before-and-after diffs work, and every way to roll back a change you do not want.
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