GPT 6.1 Terra - Unifically

GPT 6.1 Terra is OpenAI’s mid-tier GPT-6.1 model and the upgrade to GPT 5.6 Terra, released on October 26, 2026. It is built for fast computer use, visual reasoning, and writing. It accepts text and image input, returns text, has a context window of about 1 million tokens with up to 128,000 output tokens, and supports reasoning_effort from none to max. With none, temperature and top_p are accepted. Try it in the browser: GPT 6.1 Terra API playground.

Model

openai/gpt-6.1-terra


Provider	OpenAI
Name	GPT 6.1 Terra

Supported Endpoints

All three API formats are supported:

Chat Completions — POST /v1/chat/completions
Responses — POST /v1/responses
Messages — POST /v1/messages

Example

curl -X POST https://api.unifically.com/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "openai/gpt-6.1-terra",
    "messages": [
      {"role": "user", "content": "Read this invoice and return the vendor, date, and total as JSON."}
    ]
  }'

Volume discounts are available for almost all models. Reach out at contact@unifically.com to discuss custom pricing.

​Model

​Supported Endpoints

​Example

Model

Supported Endpoints

Example