OpenAI announced GPT-6.1 Terra on October 26, emphasizing visual reasoning and computer use. The company says it is available in ChatGPT Work, Codex and the API. That stated scope is not evidence that every general ChatGPT consumer account has access.
Standard API pricing is $1 per million input tokens, 5 cents per million cached input tokens, and $5 per million output tokens. At those rates, a hypothetical one million uncached input tokens plus one million output tokens costs $6; replacing the input with one million cached tokens makes the arithmetic $5.05. Those examples come from the quoted meters, not from an estimate of any real workload.
OpenAI’s separate October safety update says GPT-6 Sol and Luna in Codex and ChatGPT Work remain previously released versions, distinct from the October deployments in ChatGPT. That statement is about Sol and Luna, not Terra, but it illustrates why model name, version and surface should be recorded together. Terra’s performance comparisons remain vendor-reported. The independently usable facts here are its announced positioning, named access routes and price schedule. OpenAI Terra announcement · OpenAI deployment-safety update.