OpenAI: GPT-5.6 Terra (batch)

GPT-5.6 Terra (batch) is an OpenAI model that accepts text, image, and file inputs and returns text. Its context window is 1,050,000 tokens, with up to 128,000 tokens of output per response, so it can take in very large documents or multi-file inputs in a single request. It supports tool calling and reasoning. The listing does not state whether it supports structured output or whether open weights are available, so confirm both before relying on them. At $1.00 per million input tokens and $6.00 per million output tokens, it suits teams that process large volumes of input and need long context, tools, and reasoning in one model. Its blended benchmark score is 71.1, with an AI Index score of 69.4, but both come from a single independent benchmark. That narrow coverage makes its standing provisional, so test it on your own workloads before committing.