OpenRouter: GPT-5.6 Terra Pro (OpenRouter)

Name: GPT-5.6 Terra Pro (OpenRouter) API
Brand: Openai

stable

GPT-5.6 Terra Pro (OpenRouter) is available through Everstack's OpenAI-compatible gateway with routing, fallback, retries, and observability.

openai-gpt-5.6-terra-progpt-terrareleased Jul 9, 2026

Provider Quick start

Context

1.1M

tokens

Max output

128K

tokens

Input

$2.00

per 1M

Output

$12.00

per 1M

Activity

Daily period usage

Aggregated managed Everstack traffic. Buckets below 5 tenants or 100 requests are withheld.

Providers

ProviderContextInput /MOutput /M

OpenRouter

1.1M$2.00$12.00

Pricing

Item	Price	Unit
Input	$2.00	per 1M tokens
Output	$12.00	per 1M tokens
Cache read	$0.20	per 1M tokens
Cache write	$2.50	per 1M tokens

Performance

Reliability

Compare

Compare usage and performance

Place this model beside up to three other catalog models.

Capabilities

Modalities

Input

Output

Details

Model ID: openai-gpt-5.6-terra-pro
Family: gpt-terra
Status: stable
Knowledge: Feb 16, 2026
Released: Jul 9, 2026

Gateway Config

API: 2024-01-01
Auth: OPENROUTER_API_KEY
Discovery: dynamic
Provider type: meta

Quick Start

index.ts

import Everstack from "@everstack/node";const client = new Everstack({  apiKey: process.env.EVERSTACK_API_KEY!,  baseUrl: "https://{instance}.{region}.everstack.ai",});const completion = await client.chat.completions.create({  model: "@openrouter/openai-gpt-5.6-terra-pro",  messages: [{ role: "user", content: "Explain vector cache routing." }],});console.log(completion.choices[0]?.message?.content);

Endpoint

Base URL

https://openrouter.ai/api/v1

Chat completions

https://openrouter.ai/api/v1/chat/completions

Model

openai-gpt-5.6-terra-pro

Auth env

OPENROUTER_API_KEY

GPT-5.6 Terra Pro (OpenRouter) FAQ

How much does the GPT-5.6 Terra Pro (OpenRouter) API cost?

Through OpenRouter, GPT-5.6 Terra Pro (OpenRouter) costs $2.00 per 1M input tokens and $12.00 per 1M output tokens.

What is the context window of GPT-5.6 Terra Pro (OpenRouter)?

GPT-5.6 Terra Pro (OpenRouter) accepts up to 1.1M tokens of context and returns up to 128K output tokens on OpenRouter.

What can GPT-5.6 Terra Pro (OpenRouter) do?

GPT-5.6 Terra Pro (OpenRouter) supports chat, function calling, image input and reasoning. It accepts text, image and PDF input.

How do I call GPT-5.6 Terra Pro (OpenRouter) through Everstack?

Point any OpenAI-compatible SDK at your Everstack gateway and set the model to @openrouter/openai-gpt-5.6-terra-pro. Everstack adds retries, provider fallback, caching, per-tenant budgets and OpenTelemetry traces for every request.