OpenAI: GPT-5.6 Terra Pro (batch)
openai/gpt-5.6-terra-pro:batch · OpenAIUnmeasurable- Declared family
- GPT
- Declared tokenizer tag
- GPT
- Entered catalogue
- 9 July 2026
- Measurement
- Variant: inherits its base model’s measurement
- Evidence confidence
- Unknown
This entry is a serving variant of OpenAI: GPT-5.6 Terra Pro. A variant shares its base model's tokenizer by construction, so the measurement lives on the base record and this page inherits it.
What we checked
Four different kinds of evidence, and what each one showed| We checked | What we found | Where it came from |
|---|---|---|
| How it counts tokens | Not measured yet | we measured it |
| How its API is set up | Set up identically to 9 other listings, field for field | api_9af73392 |
| How much it can read and write | Reads up to 1,050,000 tokens at once, writes up to 128,000 | its own listing |
| Whether it thinks before answering | Reasons when asked to, at max, xhigh, high, medium, low, none, medium by default | its own listing |
Declared record
What the catalogue claims about this modelGPT-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. **Cost note:** pro mode spends far more...
- Modalities
- text+image+file->text
- Declared tokenizer
- GPT
- Prompt price
- $1.00 / M tokens
- Completion price
- $6.00 / M tokens
Supported parameters
include_reasoningmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetoolsverbosity
defaults: {"temperature":null,"top_p":null,"top_k":null,"frequency_penalty":null,"presence_penalty":null,"repetition_penalty":null}
History
Every observation, kept as taken- 9 July 2026Enters the OpenRouter catalogue declared as GPT.
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