GPT-5.6 Terra
OpenAI's GPT-5.6 model for strong intelligence with a balanced cost profile.
Context window
1,050,000 tokens
Max output
128,000 tokens
Input
$1.8$2.00
10% off1M tokens
Output
$10.8$12.00
10% off1M tokens
gpt-5.6-terraPlayground
gpt-5.6-terraClick or drag
No output yet
Pricing
| Plan | Context Window | Max Output | Input | Output | Cache Write | Cache Read |
|---|---|---|---|---|---|---|
gpt-5.6-terra | 1.05M tokens | - | $1.8$2.0010% off 1M tokens | $10.8$12.0010% off 1M tokens | $2.25$2.5010% off 1M tokens | $0.18$0.2010% off 1M tokens |
Long Context | - | - | $3.6$4.0010% off 1M tokens | $16.2$18.0010% off 1M tokens | $4.5$5.0010% off 1M tokens | $0.36$0.4010% off 1M tokens |
Applies to the full request when input exceeds 272K tokens
Cache read or cached input pricing applies to reused prompt tokens.
README
- GPT-5.6 Terra is designed for workloads that balance intelligence and cost. It roughly corresponds to the mini tier used in earlier GPT-5 families.
- Use the Responses API for reasoning, tool-calling, and multi-turn workflows. The GPT-5.6 family supports reasoning effort controls from `none` through `max`, so teams can select an appropriate quality, latency, and cost tradeoff.
- GPT-5.6 supports programmatic tool calling, persisted reasoning, and explicit prompt caching. Use `gpt-5.6-sol` when frontier capability is the priority, or `gpt-5.6-luna` for cost-sensitive, high-volume work.
API
OpenAI's GPT-5.6 model for strong intelligence with a balanced cost profile.
Model Code
gpt-5.6-terra
API
Endpoint
POST /v1/chat/completionsAuthentication
Authorization: Bearer YOUR_REACH_API_KEY Content-Type: application/json
Example
curl -X POST "https://direct.reachapi.ai/v1/chat/completions" \
-H "Authorization: Bearer YOUR_REACH_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "YOUR_MODEL_ID",
"messages": [
{
"role": "user",
"content": "Introduce ReachAPI in one sentence."
}
],
"temperature": 0.2
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