GPT-6.1 Terra from OpenAI is now available on AI Gateway.
GPT-6.1 Terra is a fast model for visual reasoning, computer use, and writing, and it improves on the previous Terra model in visual reasoning, factual accuracy, and coding. It suits 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.
The model accepts text and images and returns text, with a context window of more than 1M tokens. It supports configurable reasoning effort, structured outputs, tool calling, and implicit and explicit prompt caching. For latency-sensitive work, fast mode is available as openai/gpt-6.1-terra-fast.
GPT-6.1 Terra works with the AI SDK, the OpenAI-compatible Chat Completions API, the Responses API, and coding agents connected to AI Gateway. Use openai/gpt-6.1-terra as the model name:
To use it in Codex, Cursor, and more, install the latest Vercel CLI and run setup:
Then select `openai/gpt-6.1-terra` in the agent. See the [coding agents guide](https://vercel.com/docs/ai-gateway/coding-agents) for details.
Try GPT-6.1 Terra in the [model playground](https://vercel.com/ai-gateway/models/gpt-6.1-terra).
AI Gateway provides a unified API for calling models, tracking usage and cost, and configuring retries, failover, and performance optimizations for higher-than-provider uptime. It includes built-in custom reporting, Zero Data Retention support, budgets for API keys, routing rules, and more.
AI Gateway reflects provider pricing with no markup and does not charge a platform fee on inference, including on Bring Your Own Key (BYOK) requests.
You can view all language models available on AI Gateway.