OpenAI: GPT-5.6 Terra Pro

GPT

Multimodal

Paid

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. **Cost note:** pro mode spends far more...

Parameters

Context Window

1,050,000

tokens

Input Price

per 1M tokens

Output Price

$12

per 1M tokens

Capabilities

Model capabilities and supported modalities

Performance

Reasoning

Excellent reasoning capabilities with strong logical analysis

Math

Coding

Knowledge

Modalities

Input Modalities

file,image,text

Output Modalities

text

LLM Price Calculator

Calculate the cost of using this model

Input Tokens (0.00000200/token)$0.003000

Output Tokens (0.00001200/token)$0.036000

Common Scenarios:

Input Cost:$0.003000

Output Cost:$0.036000

Total Cost:$0.039000

Estimated usage: 4,500 tokens

Monthly Cost Estimator

Based on different usage levels

Light Usage

$0.1400

~10 requests

Moderate Usage

$1.4000

~100 requests

Heavy Usage

$14.0000

~1000 requests

Enterprise

$140.0000

~10,000 requests

Note: Estimates based on current token count settings per request.

Last Updated: 2026/09/29