GPT-6.1 Terra now available on AI Gateway
By Steven Van ·
GPT-6.1 Terra accepts text and images, has a 1M+ token context window, and works with the AI SDK, Chat Completions, Responses API and coding agents.
OpenAI's GPT-6.1 Terra is now available on AI Gateway, Vercel's unified API for calling models. Vercel describes it as a fast model for visual reasoning, computer use and writing. It improves on the previous Terra model in visual reasoning, factual accuracy and coding. Details are in the release note.
What it is suited to
Vercel points to high-volume work in documents and desktop apps, such as filling out forms, interpreting technical drawings, or entering invoice details into accounting software. OpenAI still recommends its larger GPT-6 models for the most complex coding tasks.
Capabilities
- Accepts text and images and returns text.
- Context window of more than 1M tokens.
- Configurable reasoning effort, structured outputs and tool calling.
- Implicit and explicit prompt caching.
- A fast mode for latency-sensitive work, available as openai/gpt-6.1-terra-fast.
Using it
The model name is openai/gpt-6.1-terra. It works with the AI SDK, the OpenAI-compatible Chat Completions API, the Responses API, and coding agents connected to AI Gateway. In the AI SDK, that means passing the model name to streamText.
To use it in Codex, Cursor and other agents, install the latest Vercel CLI and run npx vercel ai-gateway setup. Then select openai/gpt-6.1-terra in the agent. The model can also be tried in the AI Gateway model playground.