GPT-5.6 Terra · orcarouter
GPT-5.6 Terra is the balanced model in OpenAI's GPT-5.6 series, sitting between the Sol flagship and the cost-efficient Luna tier to give the best quality-to-cost ratio for everyday production work. It handles day-to-day coding, reasoning, tool use, and agentic workflows with a 1.05M-token context window and up to 128K output tokens, holding up well on long documents, large codebases, and multi-turn sessions. It accepts text, image, and file inputs with text output, supports configurable reasoning effort to tune the intelligence / latency / cost tradeoff, and is a first-class OpenAI Responses model with native tool calling and structured outputs. Terra is a strong default when Sol is more than the task needs but Luna is not quite enough — general assistants, mid-complexity coding, and high-throughput agent pipelines.
Input, $/1M $2.00
Output, $/1M $12.00
Cache read $0.20
Cache write $2.50
Context 1 050 000
Max output 128 000
Accepts application/pdf, image/gif, image/jpeg, image/png, image/webp, text
Last checked 04.11.2026 12:26:37 UTC
Source provider's page
Price alerts
API
OpenAI-compatible API: the official OpenAI SDKs work with this base URL. Replace YOUR_API_KEY with your key from the provider.
| API base URL | |
|---|---|
| Endpoint | |
| Model id | |
curl
curl https://api.orcarouter.ai/v1/chat/completions \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "openai/gpt-5.6-terra", "messages": [{"role": "user", "content": "Hello!"}], "max_tokens": 256}'Python
import requests
r = requests.post(
"https://api.orcarouter.ai/v1/chat/completions",
headers={"Authorization": "Bearer YOUR_API_KEY"},
json={
"model": "openai/gpt-5.6-terra",
"messages": [
{
"role": "user",
"content": "Hello!"
}
],
"max_tokens": 256
},
)
print(r.json())JavaScript
const r = await fetch("https://api.orcarouter.ai/v1/chat/completions", {
method: "POST",
headers: {Authorization: "Bearer YOUR_API_KEY", "Content-Type": "application/json"},
body: JSON.stringify({
"model": "openai/gpt-5.6-terra",
"messages": [
{
"role": "user",
"content": "Hello!"
}
],
"max_tokens": 256
}),
});
console.log(await r.json());Request (JSON)
{
"model": "openai/gpt-5.6-terra",
"messages": [
{
"role": "user",
"content": "Hello!"
}
],
"max_tokens": 256
}Response (JSON)
{
"id": "chatcmpl-...",
"object": "chat.completion",
"model": "openai/gpt-5.6-terra",
"choices": [
{
"index": 0,
"message": {
"role": "assistant",
"content": "Hi! How can I help?"
},
"finish_reason": "stop"
}
],
"usage": {
"prompt_tokens": 9,
"completion_tokens": 12,
"total_tokens": 21
}
}The address is taken from the provider's model list; check it against the provider's documentation.
Source: AI Rate Card, https://airatecard.com/en/c/offer%3Aorcarouter%7Copenai/gpt-5.6-terra, prices checked 2026-11-04; seller's page: https://orcarouter.ai/models/openai/gpt-5.6-terra
Technical details
ID: offer:orcarouter|openai/gpt-5.6-terra