GPT-5.6 TerraPricing & API costs
GPT-5.6 model that balances intelligence and cost
- Input
- $2.00
- Output
- $12.00
- Cached input
- $0.20
$50.00 for 10,000 short requests at 1K input + 250 output tokens each.
Official pricingContext window
1,050,000 tokens
Maximum output
128,000 tokens
Release date
Not published
API model ID
gpt-5.6-terraModel overview
Understand the model before estimating your workload.
Use the model ID gpt-5.6-terra through the provider's direct API. The prices and limits on this page apply to that specific listing, with source data checked on 2026-10-12.
GPT-5.6 Terra has a published context window of 1,050,000 tokens. The maximum output for this channel is 128,000 tokens. Budget context space for your prompt, conversation history, retrieved material, and the response. Context capacity and output limits are different; your input and response must fit within the request limits. A larger window does not make those tokens free.
Pricing
Rates are grouped by usage type and available tier.
Per 1M tokens
Input
$2.00
Cached input
$0.20
Cache write
$2.50
Output
$12.00
Batch pricing
Batch requests are charged at 50% of standard rates.
What does it cost in practice?
Three example workloads, calculated from this model’s token rates.
| Workload | Tokens / request | Per request | 10,000 requests |
|---|---|---|---|
| Short conversationA compact prompt with a brief answer. | 1,000 in / 250 out | $0.005 | $50.00 |
| Document analysisA longer document with a focused summary or extraction. | 8,000 in / 750 out | $0.025 | $250 |
| Code generationRepository context followed by a longer generated response. | 4,000 in / 2,000 out | $0.032 | $320 |
Where the short-conversation budget goes
Input $20.00 · Output $30.00 · 10,000 requests
$50.00
Planning estimates using the listed token rates, with no caching, retries, batch discount, or tool fees. These examples assume text usage; images, audio, video, and higher rate tiers can change your bill. Each agent step is a separate request.
With 50% of input tokens served from cache, the short-conversation example costs $41.00 per 10,000 requests, compared with $50.00 without cache hits. Cache-write fees are excluded.
Use your own workloadHow billing works
The details that turn a token rate into an actual bill.
Separate input from output
For GPT-5.6 Terra, multiply input and output token counts by their respective rates, then divide by one million. Conversation history and retrieved context contribute to input usage each time they are sent.
Cache hits have their own rate
The listed cached-input price is $0.20 per million tokens. Reusing a prompt does not automatically qualify: use the provider's reported cached-token count, and account for any cache-write or storage charges.
Check discounts and rate tiers
Eligible batch requests use 50% of the standard token rate in this listing. Batch work is asynchronous; check supported endpoints and turnaround times. Review the provider's pricing terms for workload-specific conditions.
Account for the complete workflow
Retries, follow-up calls, and agent tool loops increase request counts. Search, storage, and other tool charges can be billed separately from model inference. Use actual API usage logs to calibrate a budget before scaling traffic.
Capabilities and limits
What the API supports and where limits apply.
- Provider
- OpenAI
- Model type
- Text tokens
- Family
- gpt
- Access
- Direct API
- Modalities
- Text · Image
- Context window
- 1,050,000 tokens
- Max output
- 128,000 tokens
- Released
- Not published
- Deprecation date
- Not announced
Compare API channels
Check the model ID, rate, and limit for each access route.
The same model can have a different ID, price, or output limit depending on how you access it. These are the channels currently tracked in this catalog; they are not a complete list of every hosting provider.
Text: $2.00 input · $0.20 cached input · $2.50 cache write · $12.00 output / 1M tokens
$2.00 input · $0.20 cached input · $2.50 cache write · $12.00 output / 1M tokens
Sources
Official pages and the date this information was checked.
- Last checked
- 2026-10-12
- Source links
- 3
Next step
Estimate costs with this model.
Frequently asked questions
OpenAI pricing checked on 2026-10-12: Text: $2.00 input · $0.20 cached input · $2.50 cache write · $12.00 output / 1M tokens. These rates apply to the listed API model ID.
GPT-5.6 Terra has a published context window of 1,050,000 tokens. The maximum output for this channel is 128,000 tokens. Budget context space for your prompt, conversation history, retrieved material, and the response. Context capacity and output limits are different; your input and response must fit within the request limits. A larger window does not make those tokens free.
The recorded status is Active. Use the exact model ID gpt-5.6-terra and confirm that your API account has access.
At 1,000 input and 250 output tokens per request, 10,000 requests cost an estimated $50.00 at the listed rates. This example has no cache hits, retries, batch discount, or tool fees. Tiered pricing and multimodal usage can change the total.
Cached input is listed at $0.20 per million tokens. Only tokens the provider recognizes as cache hits receive that rate. The listed batch rate is 50% of the standard rate for eligible requests. Check eligibility and cache-write charges in the pricing documentation.
Recent updates
Added to the model directory.
View sourceModel details changed in the provider's documentation.
View source