AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
context window — The maximum amount of text a model can consider at once — its working memory for the current conversation or task.
tool use — A model's ability to call external functions — run code, search the web, edit files — instead of only generating text.
structured output — Forcing a model's response to match a schema, so downstream code can parse it instead of guessing at prose.
Why it matters
Mercury and Mercury Coder gained 128K context windowThe maximum amount of text a model can consider at once — its working memory for the current conversation or task.Full definition →, tool useA model's ability to call external functions — run code, search the web, edit files — instead of only generating text.Full definition →, structured outputForcing a model's response to match a schema, so downstream code can parse it instead of guessing at prose.Full definition →, and non-zero temperature, which are the prerequisites for AI agentAn AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.Full definition → use. The platform added a 10M-token free tier, hard billing limits, and a training-data opt-out.
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