You can call openai/gpt-6.1-terra or the -fast variant through the AI SDK, Chat Completions, Responses API or connected coding agents. It has a context windowThe maximum amount of text a model can consider at once — its working memory for the current conversation or task.Full definition → over 1M tokenThe chunk of text a model reads and writes in — roughly three-quarters of a word — and the unit AI usage is billed in.Full definition → and configurable reasoning effort.
Terms in this piece · Glossary
context window — The maximum amount of text a model can consider at once — its working memory for the current conversation or task.
token — The chunk of text a model reads and writes in — roughly three-quarters of a word — and the unit AI usage is billed in.
tool use — A model's ability to call external functions — run code, search the web, edit files — instead of only generating text.
prompt caching — Reusing the model's processed form of a repeated prompt prefix so subsequent calls skip re-reading it, cutting cost and latency substantially.
