GPT 5.6 Terra API: Pricing, Playground and Examples

Structured extraction and classification

Use Terra to turn supplied orders, tickets, or meeting notes into fields and categories. Specify types, allowed labels, and how to represent absent values; a missing address should stay unknown rather than become a plausible location.

Test cases with several items, contradictory dates, and incomplete names. Keep source passages or identifiers alongside extracted values so a reviewer can distinguish an extraction error from a source ambiguity. The text form does not enforce a schema simply because you request JSON.

Long-context document analysis

A broad context window makes Terra a candidate for comparing related documents and consolidating requirements. Ask for confirmed facts, conflicting statements, and unanswered questions as separate outputs, rather than one summary that silently resolves disagreements.

Select material relevant to the question and retain document labels. Check conclusions against original passages, especially exceptions and tentative commitments. Your effective input allowance depends on the target interface and upstream; context capacity is not perfect recall or permanent memory.

Routine coding and implementation support

Evaluate Terra on bounded development tasks such as explaining a function, drafting validation logic, proposing tests, or locating a defect from supplied code and logs. State expected behavior and interfaces so the answer can be checked without guessing your architecture.

Review generated diffs and run compilation, unit tests, and security checks in your own environment. For difficult cross-module repairs, compare with GPT 5.6 Sol using the same acceptance criteria. This Playground does not open a repository, execute commands, or deploy a patch.

Adjustable reasoning and visual-input boundaries

Terra supports reasoning effort from none through max, with medium as its model default, and accepts image input at the model level. Reasoning configuration is a way to evaluate different task demands, not a guarantee that more effort always gives a better answer.

Use text descriptions of charts or interfaces in the chat tool. For images or PDFs, follow the documented Responses input format and confirm channel support; the chat workspace has no upload controls. A URL in ordinary text does not establish that its contents were inspected.

Measure extraction accuracy beyond valid JSON

Build a fixed sample with missing fields, multiple entities, and ambiguous dates. Count correct values, invented values, omissions, and label mistakes separately. A parser accepting an object does not prove that its contents match the order or document.

Measure manual correction time as well as first-pass success. If an extra verification step removes the apparent cost benefit, revise the schema, narrow the task, or compare another model before increasing volume.

Evaluate code and reasoning with checkable outcomes

For code, use test outcomes and minimal-change review instead of judging whether an explanation sounds confident. For analysis, require complete constraint coverage and distinguish existing evidence from proposed measurements.

Keep inputs and acceptance criteria fixed when comparing Terra with Sol. Record reasoning configuration and execution environment where applicable; a coding agent with tools is not equivalent to one text-only prompt, and a family name does not establish a benchmark result.

Track latency and cost per accepted result

Record time to first answer text, total duration, input and output usage, and the number of retries or corrections. Compare cost per accepted result, not only token price, especially for repeated classification or extraction work.

Conversation history, long source material, and reasoning can increase usage or delay final text. Begin with a small representative sample and current account pricing; measure the chosen configuration before promising production throughput or response times.

When to prioritize testing GPT 5.6 Terra

Start with Terra when a workflow repeats a well-defined task but still needs judgment: extracting fields from imperfect text, producing constrained summaries, or drafting routine code. Keep a clear escalation rule for uncertain outputs and difficult failures.

Do not assume the lower-tier position makes Terra universally faster or sufficiently accurate. Compare the complete workflow, including validation and rework, with GPT 5.6 Sol or GPT 5.5 before deciding which steps should use which model.

Choose models by task on API Hop

For an alternative text baseline, include Gemini 3.8 Flash on the same summary or classification samples. Shared Chat Completions authentication helps reuse client code, but model-specific options and native protocols still differ.

Keep acceptance criteria and input material consistent, and use current account prices. Assign different steps to different models only when your results support that choice; model names alone do not establish speed, accuracy, or total cost.

Usage-based billing and model cost optimization

Charges follow current API Hop rates and actual usage. Top up on demand.

Unified AI models and data APIs, with multi-model access in one place

One API key connects multiple AI models and data services, reducing integration costs and letting you switch with one click. Business applications need both AI and data.

Call logs and application access controls, with clarity on every call

Every API call is recorded in your dashboard. Create separate API keys for different applications.

Evaluate outputs against your task

Use the documented model ID and supported parameters through API Hop. Evaluate outputs against your own acceptance criteria, then inspect usage records and response metadata before production use. A model name or example does not guarantee each result.

Prepare your account and test online

Sign in, confirm your balance, and create an API key.

Try it in the Playground

Explore the model's capabilities in the Playground to find the best way to use it.

Integrate GPT 5.6 Terra into your business

Follow our developer documentation to integrate GPT 5.6 Terra into your business.

Future model upgrades

To switch to a newer model, first confirm that its exact ID is returned by the model catalog for your API key. If it supports the same endpoint and request fields, update the model ID, then test response formats, streaming, output limits and billing before sending production traffic. For asynchronous image or video tasks, also verify job submission, status polling and result retrieval.