Providers / OpenAI / GPT-5.6 Terra
GPT-5.6 Terra API Cost Calculator
GPT-5.6 Terra costs $2 per 1M input tokens and $12 per 1M output tokens at official OpenAI API prices, verified 2026-10-25. Estimate your own usage below — the calculator is preset to this model.
Calculate your GPT-5.6 Terra cost →Paste text to count tokens instead
Cost per call
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Estimated monthly cost
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Official price vs gateway price
| Where | Input / 1M | Output / 1M |
|---|---|---|
| Official API | $2 | $12 |
GPT-5.6 Terra is priced above at the official list rate. We have not found a gateway that sells it cheaper with a verifiable public price, so no gateway row is shown — we never estimate one.
Using open-weight models instead (DeepSeek, Qwen, Llama, gpt-oss)? See our Novita AI gateway prices, or go toNovita AI (affiliate).Disclosure.
Prompts above 272K input tokens are billed at 2x input and 1.5x output for the full request. This calculator uses standard-tier rates.
GPT-5.6 Terra price facts
| Input | $2 per 1M tokens |
|---|---|
| Output | $12 per 1M tokens |
| Cached input | $0.2 per 1M tokens |
| Batch tier | $1 in / $6 out per 1M tokens |
| Context window | 1,050,000 tokens |
| Released | — |
| Price verified | 2026-10-25 · source |
What GPT-5.6 Terra costs in practice
| Workload | Per call | Per month |
|---|---|---|
| Chat assistant 2,000 input / 500 output tokens per call, 10,000 calls a month | $0.01 | $100.00 |
| Document processing 50,000 input / 2,000 output tokens per call, 1,000 calls a month | $0.124 | $124.00 |
| Agent loop with prompt caching 10,000 fresh input / 100,000 cached input / 2,000 output tokens per call, 500 calls a month | $0.064 | $32.00 |
Frequently asked questions
How much does GPT-5.6 Terra cost per month?
It depends entirely on token volume. As worked examples: a chat assistant doing 10,000 calls a month costs $100.00, while a document pipeline doing 1,000 long calls costs $124.00. Use the calculator on this page with your own numbers for an exact figure. Prices are official rates verified 2026-10-25.
Is GPT-5.6 Terra cheaper than GPT-6 Luna?
At a blended workload of 1M input and 250K output tokens, GPT-5.6 Terra costs $5.00 and GPT-6 Luna costs $0.225 — so GPT-6 Luna is cheaper at this mix. The answer can flip if your workload is mostly output or mostly cached input.
Does GPT-5.6 Terra have batch or caching discounts?
Yes — batch processing is $1 / $6 per 1M tokens. Cached input is billed at $0.2 per 1M tokens. Prices verified 2026-10-25. We do not invent unpublished rates.
Are these official prices or gateway prices?
GPT-5.6 Terra on this page uses official OpenAI API prices from the provider's public pricing page. Gateway reseller rates, when shown elsewhere on the site, are labeled separately.
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