GPT-5.6 family · Balanced
GPT-5.6 Terra Token Counter
Check prompt length and token boundaries for GPT-5.6 Terra, the balanced intelligence-and-cost model in the GPT-5.6 family.
Accuracy note
Uses the compatible o200k_base encoding; final Responses API usage may include additional model-side tokens.
Frequently asked questions
What is GPT-5.6 Terra designed for?
GPT-5.6 Terra balances intelligence and cost for production workloads.
Is the token count private?
Yes. The compatible tokenizer runs in your browser.