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GPT 5.6 Terra

GPT 5.6 Terra is the balanced model of the GPT-5.6 family, built for everyday production work with performance comparable to the previous generation at a lower price, stronger agentic coding, biology, and cybersecurity results, and a context window of 1.1M tokens. Your use is subject to OpenAI's Terms & Privacy Policies.

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Use with AI GatewayView docs
import { streamText } from 'ai'


const result = streamText({
  model: 'openai/gpt-5.6-terra',
  prompt: 'Why is the sky blue?'
})
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Latency

P50 time to first token (TTFT) on live AI Gateway traffic, in milliseconds. View the docs for more info.