OpenAI's balanced GPT-5.6 tier, between the Sol flagship and the Luna cost tier. 1M context, accepts text, images and files.
Modalities
Text+Image → Text
Input
$3.38 /1M
Output
$20.25 /1M
Cached input
$0.34 /1M90% off
Context
1M
Speed
medium
Performance
Live production data from real requests on Kyma — not synthetic benchmarks.
Rank
#67
of 69 active models
Tokens served
28
all-time
Pricing
Pay per token. Cached input is billed at 10% of the input rate.
+ Estimate your workload− Estimate your workload
Estimated monthly cost
$452
$15.05 / day on GPT-5.6 Terra
Same workload on:
Estimates use list pricing with cached input billed at the 90%-discount rate. Actual bills depend on real token counts — every response includes its exact cost.
How it compares
Against the peers people actually weigh it against.
| Spec | GPT-5.6 Terra | GPT-OSS 120B |
|---|---|---|
| Input /1M | $3.38 | $0.20 |
| Output /1M | $20.25 | $0.81 |
| Context | 1M | 128K |
| Tools | Yes | Yes |
| Reasoning | Yes | No |
| Speed | medium | medium |
Quick start
Up and running in under two minutes.
- 1
Create an API key
Sign up and grab a key from the dashboard — $0.50 free credit, no card required.
Get API key → - 2
Make your first request
Drop in your key and send a chat completion — fully OpenAI-compatible.
curl https://kymaapi.com/v1/chat/completions \ -H "Authorization: Bearer YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "model": "gpt-5.6-terra", "messages": [ {"role": "user", "content": "Explain prompt caching in one paragraph."} ] }' - 3
Stream responses
Add
"stream": trueto receive tokens as they arrive.curl https://kymaapi.com/v1/chat/completions \ -H "Authorization: Bearer YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "model": "gpt-5.6-terra", "stream": true, "messages": [{"role": "user", "content": "Hello!"}] }'
FAQ
Common questions about this model.
