GPT-6.1 Terra
openai/gpt-6.1-terraGPT-6.1 Terra is the middle tier of OpenAI's GPT-6.1 family and the replacement for GPT-5.6 Terra, with text and image input. OpenAI positions it for everyday agentic, coding and writing work, with particular gains in visual reasoning over screenshots and documents and in computer use, at half the price of GPT-6.1 Sol. Reasoning effort ranges from none to max with medium as the default; choose GPT-6.1 Sol for harder work or GPT-6 Luna for the highest-volume tasks.
- Input price
- $1.00USD / 1M tokens
- Output price
- $5.00USD / 1M tokens
- Cache read
- $0.05USD / 1M tokens
- Cache write
- $1.25USD / 1M tokens
- Context window
- 1.1M
- Max output
- 128K
Specifications
- Input
- Text, image
- Output
- Text
Independent evaluations
Benchmarks
Scores on standardized evaluations, compared with other models on SandBase.
Metrics sourced from Artificial Analysis · Intelligence Index v5 · Updated 2026-10-29
Try the model
Playground
Write a prompt to try this model. Usage is billed at the prices shown.
Try a prompt
Add an image (optional)
Your response will appear here
Choose an example or write a prompt, then click Run.
Start building
Send your first request
Choose either supported API with unified authentication and usage tracking.
# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
-X POST "https://api.sandbase.ai/v1/responses" \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
-H "Content-Type: application/json" \
--data-binary @- <<'SANDBASE_JSON'
{
"model": "openai/gpt-6.1-terra",
"input": "Hello",
"max_output_tokens": 2048
}
SANDBASE_JSON
)
printf '%s\n' "$result"Questions
FAQ
How do I call OpenAI GPT-6.1 Terra through SandBase?
Create a SandBase API key, then send requests with the model ID "openai/gpt-6.1-terra" to Responses API (/v1/responses) or Chat Completions API (/v1/chat/completions) at https://api.sandbase.ai. The request examples on this page show the exact payload.
How much does OpenAI GPT-6.1 Terra cost?
$1 per 1M input tokens and $5 per 1M output tokens, billed per request from your SandBase balance. Discounts, when available, are shown in the pricing on this page.
What is the context window of OpenAI GPT-6.1 Terra?
1.1M tokens of context, with up to 128K output tokens per response.
How does OpenAI GPT-6.1 Terra score on benchmarks?
OpenAI GPT-6.1 Terra scores 51.0 on the Artificial Analysis Intelligence Index (v5), ranking #5 of 21 models on SandBase. Source: Artificial Analysis, measured as GPT-6.1 Terra (Max).
Which features does OpenAI GPT-6.1 Terra support?
OpenAI GPT-6.1 Terra supports vision (image input), reasoning, function calling, structured output. See Specifications above for the full list.
Do I need a separate OpenAI account?
No. One SandBase API key and balance gives you access to OpenAI GPT-6.1 Terra and the other models in the catalog; you do not need to sign up with OpenAI separately.