Using GPT-5.6 Terra on OpenRouter

Implementation guide · GPT-5.6 · OpenAI

Serverless

OpenRouter exposes GPT-5.6 Terra through model ID openai/gpt-5.6-terra. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-07-09. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at OpenRouter and generate an API key.
  2. 2
    Use the OpenRouter SDK or REST API to call openai/gpt-5.6-terra — see the documentation for request format.
  3. 3
    You'll be billed $2.50/1M input, $15.00/1M output tokens. See full pricing.
API PortalDocumentationPricingModel Card

Code Examples

See OpenRouter documentation for integration details.

Pricing on OpenRouter

TypePrice (per 1M)
Input tokens$2.50
Output tokens$15.00

Capabilities

VisionMultimodalReasoningJSON / Tool usePrompt CachingBatch API

About GPT-5.6 Terra

OpenAI's balanced mid-tier GPT-5.6 model. Terra delivers performance competitive with GPT-5.5 at about 2x lower cost, suited for high-volume production workloads such as customer support, document analysis, and internal tooling. Generally available July 9, 2026 across ChatGPT, Codex, and the OpenAI API (model ID gpt-5.6-terra). Supports text and image inputs, reasoning, tool use, prompt caching, and Batch API with a 1,050,000-token context window and 128K max output.

Full model details →

Model Specs

Released2026-07-09
Context1.05m
ArchitectureDecoder Only

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Also available on(1)

OpenAI API$2.50/1M
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Provider

OpenRouter

OpenRouter, Inc.

New York, NY, USA