GPT-5.6 Terra
gpt-5.6-terraby OpenAI · gpt-terra series
Balanced GPT-5.6 model for capable, cost-efficient everyday work
Capabilities
函数工具推理强度档位JSON Schema 输出
Declarations match gateway routing: unsupported parameters are rejected before the request runs, at no cost
Pricing
USD / 1M tokens · the listed price is the settled price; streaming and non-streaming cost the same, failed requests are auto-refunded
| Billing item | UnioAPI price | List price |
|---|---|---|
| Standard | ||
| Uncached input | $0.14 | $2.00 |
| Cache read | $0.014 | $0.20 |
| Cache creation30 min | $0.175 | $2.50 |
| Output | $0.84 | $12.00 |
| Priority · OpenAI expedited lane | ||
| Uncached input | $0.28 | $4.00 |
| Cache read | $0.028 | $0.40 |
| Cache creation30 min | $0.35 | $5.00 |
| Output | $1.68 | $24.00 |
Long-context tiered pricing
When a single request's total input exceeds 272K tokens, the whole request is billed at input ×2 and output ×1.5 (i.e. input $0.28, output $1.26 per 1M).
Quick start
OpenAI-compatible protocol — point your SDK's base URL at UnioAPI, no code changes
curl https://api.unioapi.com/v1/chat/completions \
-H "Authorization: Bearer $UNIO_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"gpt-5.6-terra","messages":[{"role":"user","content":"Hello"}]}'FAQ
Do these prices match my actual bill?
Yes. This page reads the same data source as the billing system, so the listed price is the settled price. Price changes apply immediately and only to subsequent requests.
What is the Priority tier?
Priority is OpenAI's expedited lane and is only available on OpenAI models. Shorter queues and faster first tokens, billed at its own rates. Select it with service_tier: "priority".
How is this different from the official API?
Fully protocol-compatible with identical capabilities. The difference: lower prices, and failed requests are automatically refunded.
Start calling GPT-5.6 Terra
Create an API key after signing up — pay per token, no minimum spend, failed requests refunded.