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OpenAI: OpenAI: GPT-5.6 Terra Pro

GPT-5.6 Terra Pro is the same underlying model as [GPT-5.6 Terra](https://openrouter.ai/openai/gpt-5.6-terra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode

Source-linked Weight access not listed
API record Report
InputT
OutputT
Input price$2/M
Output price$12/M
Context1.05M
Max output128K
Providers0
Inference availability

Providers

Provider-specific identifiers, limits, and listed prices per million tokens. Every row links back to the provider's own documentation.

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No inference providers are listed

The model record exists, but no source-linked provider offer is available yet.

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Specification

Capabilities

Recorded from the source catalog and provider listings.

? Reasoning Unknown
? Tool calling Unknown
? Structured output Unknown
? Attachments Unknown
✓ Vision input Yes
? Open weights Unknown
Creator
OpenAI
Model family
Not documented
Knowledge cutoff
Not documented
License
Not documented
Release date
Not documented
Model ID
openai/gpt-5.6-terra-pro
Published evaluations

Benchmarks

Every result stays attached to its source, version, metric and harness. Scores from different versions are never merged, and the profile below plots each benchmark against its own population rather than on a shared scale.

Benchmark registry
No published benchmark results

ModelBench does not infer quality from price, context size, or model name. When a source publishes a comparable result, it appears here with its version and link.

Read the methodology
Catalog activity

Change log

Field-level changes detected between successful source imports.

Full change log
Price Completion6.0 → 12.0
Price Prompt1.0 → 2.0
Price Prompt1.0000000000000002 → 1.0
Price Completion7.5 → 6.0
Price Prompt1.25 → 1.0000000000000002
Price Completion15.0 → 7.5
Price Prompt2.5 → 1.25
Provenance

Sources & verification

Every figure on this page traces back to one of these records.

Methodology
Last verified
Sep 11, 2026
Status
Source-linked
Confidence
Medium
Catalog source
OpenRouter
OpenRoutercatalog ↗
Public API

Use this record

Fetch the complete source-linked model record. No key, no account, no rate-limited tier.

API documentation
Endpoint
GET https://model.kyssta.lol/api/v1/models/openai/gpt-5.6-terra-pro
curl
curl "https://model.kyssta.lol/api/v1/models/openai/gpt-5.6-terra-pro"
Common questions

Frequently asked questions

Answered directly from the stored record — nothing here is generated beyond the catalog's own fields.

What is OpenAI: GPT-5.6 Terra Pro?

GPT-5.6 Terra Pro is the same underlying model as [GPT-5.6 Terra](https://openrouter.ai/openai/gpt-5.6-terra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode. It is published by OpenAI and catalogued here from OpenRouter.

What is the context length of OpenAI: GPT-5.6 Terra Pro?

OpenAI: GPT-5.6 Terra Pro accepts up to 1.05M tokens of context and returns up to 128K output tokens.

Does OpenAI: GPT-5.6 Terra Pro support tool calling and structured output?

Provider catalogs list support for image input.

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