When was GPT-6.1 Terra released?

OpenAI announced it on 26 October 2026 and made it available in the API, ChatGPT Work and Codex the same day.

How does GPT-6.1 Terra compare with GPT-6 Astra?

OpenAI says it matches GPT-6 Astra at one-tenth the price per token and finishes tasks over three times faster on average. These are OpenAI's claims; the full benchmark tables are shown in charts in the announcement.

What is the price of GPT-6.1 Terra?

$1.00 per million input tokens, $0.05 per million cached input tokens and $5.00 per million output tokens at the standard rate, per OpenAI's model card.

GPT-6.1 Terra: Model Overview, Specs and News

GPT-6.1 Terra

GPT-6.1 Terra is a large language model released by OpenAI on 26 October 2026 as the mid-range member of the GPT-6 series. It accepts text and images and outputs text, and OpenAI positions it for visual reasoning, computer use and writing at a lower price than GPT-6 Astra and GPT-6.1 Sol.

Last reviewed 28 Oct 2026 · by OpenAI

Facts at a glance

Developer	OpenAI
Released	26 October 2026 source
API name	gpt-6.1-terra source
Context window	1,050,000 tokens source
Max output	128,000 tokens source
Knowledge cutoff	1 June 2026 source
API price	$1.00 per 1M input tokens, $0.05 cached input, $5.00 per 1M output tokens (standard) source
Modalities	Text and image input; text output
Preparedness Framework	Critical in cybersecurity; High in biological and chemical; below High in AI self-improvement source

What GPT-6.1 Terra is used for

OpenAI describes GPT-6.1 Terra as a fast, efficient model for visual reasoning, precise computer use and clear writing, with example uses such as matching product photos to catalog entries, interpreting technical drawings, acting on application screens and drafting text. Tool calling requires the Responses API, and the model supports web search, file search, code interpreter, hosted shell, computer use and MCP tools. Fine-tuning is not supported. Reasoning effort can be set from none to max, with medium as the default.

Questions people ask

When was GPT-6.1 Terra released?: OpenAI announced it on 26 October 2026 and made it available in the API, ChatGPT Work and Codex the same day.
How does GPT-6.1 Terra compare with GPT-6 Astra?: OpenAI says it matches GPT-6 Astra at one-tenth the price per token and finishes tasks over three times faster on average. These are OpenAI's claims; the full benchmark tables are shown in charts in the announcement.
What is the price of GPT-6.1 Terra?: $1.00 per million input tokens, $0.05 per million cached input tokens and $5.00 per million output tokens at the standard rate, per OpenAI's model card.