--- title: OpenAI: GPT 5.6 Terra Pro API | Text Generation | ModelsLab description: Build with OpenAI: GPT 5.6 Terra Pro API by Openai. Text generation, chat, code, and reasoning. Pay-per-use. Free tier. url: https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/openai/openai-gpt-5.6-terra-pro.md canonical: https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/openai/openai-gpt-5.6-terra-pro.md type: product component: Playground/LLM/Index generated_at: 2026-07-11T21:07:08.974426Z --- OpenAI: GPT-5.6 Terra Pro --- [LLMs.txt](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/openai-gpt-5.6-terra-pro/llms.txt) [.md](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/openai/openai-gpt-5.6-terra-pro.md) OpenAI: GPT-5.6 Terra Pro --- Choose a prompt below to get started or type your own message Explain quantum computing in simple terms Write a Python function to sort a list Create a marketing email for a SaaS product Compare REST vs GraphQL APIs Send ### OpenAI: GPT-5.6 Terra Pro openai openai-gpt-5.6-terra-pro Copy model ID PricingInput $2.50 / 1M tokens Output $15.00 / 1M tokens API EndpointsOpenAI Compatible `https://modelslab.com/api/v7/llm/chat/completions`Endpoint Anthropic Compatible `https://modelslab.com/api/v7/llm/v1/messages`Messages `https://modelslab.com/api/v7/llm/v1/messages/count_tokens`Count Tokens `https://modelslab.com/api/v7/llm/v1/models`Models Use with Claude Code cURL Example ParametersSystem MessageYou are a helpful AI assistant specialized in providing accurate and detailed responses. Temperature0.7 Max Tokens1000 Top P0.9 Frequency Penalty0 Presence Penalty0 Model Info Support Related Models --- Discover similar models you might be interested in [View all LLM Models](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models?feature=llmaster) [#### open\_router/OpenAI: GPT-5.6 Sol openai-gpt-5.6-sol From $17.50/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/openai-gpt-5.6-sol) [#### open\_router/Anthropic: Claude Sonnet 4 anthropic-claude-sonnet-4 From $9.00/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/anthropic-claude-sonnet-4) [#### nous\_research/Nous Hermes 2 Mixtral 8X7B Dpo NousResearch-Nous-Hermes-2-Mixtral-8x7B-DPO From $0.60/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/nous_research/NousResearch-Nous-Hermes-2-Mixtral-8x7B-DPO) [#### open\_router/Qwen: Qwen3.6 Flash qwen-qwen3.6-flash From $0.66/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/qwen-qwen3.6-flash) [#### open\_router/Google: Nano Banana Pro (Gemini 3 Pro Image) google-gemini-3-pro-image From $7.00/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/google-gemini-3-pro-image) [#### open\_router/Morph: Morph V3 Large morph-morph-v3-large From $1.40/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/morph-morph-v3-large) [#### open\_router/Qwen: Qwen3 30B A3B Thinking 2507 qwen-qwen3-30b-a3b-thinking-2507 From $0.84/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/qwen-qwen3-30b-a3b-thinking-2507) [#### open\_router/xAI: Grok 4.5 x-ai-grok-4.5 From $4.00/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/x-ai-grok-4.5) [#### open\_router/Z.ai: GLM 4.6V z-ai-glm-4.6v From $0.60/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/z-ai-glm-4.6v) [#### open\_router/Qwen2.5 Coder 32B Instruct qwen-qwen-2.5-coder-32b-instruct From $0.83/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/qwen-qwen-2.5-coder-32b-instruct) [#### together\_ai/Cogito v2.1 671B deepcogito-cogito-v2-1-671b From $1.25/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/deepcogito-cogito-v2-1-671b) [#### together\_ai/Pearl-ai Gemma-4-31B-it-pearl pearl-ai-gemma-4-31b-it From $0.57/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/pearl-ai-gemma-4-31b-it) [#### alibaba\_cloud/Qwen: Qwen3.5 397B A17B qwen-qwen3.5-397b-a17b From $2.10/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/alibaba_cloud/qwen-qwen3.5-397b-a17b) [#### open\_router/Sao10K: Llama 3.1 Euryale 70B v2.2 sao10k-l3.1-euryale-70b From $0.85/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/sao10k-l3.1-euryale-70b) [#### open\_router/Meta: Llama 3.3 70B Instruct meta-llama-llama-3.3-70b-instruct From $0.21/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/meta-llama-llama-3.3-70b-instruct) [#### open\_router/Anthropic: Claude Opus 4.1 anthropic-claude-opus-4.1 From $45.00/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/anthropic-claude-opus-4.1) [#### qwen/Qwen QwQ-32B Qwen-QwQ-32B From $1.20/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/qwen/Qwen-QwQ-32B) [#### open\_router/DeepSeek: DeepSeek V3 deepseek-deepseek-chat From $0.50/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/deepseek-deepseek-chat) Open Source Alternatives --- Explore open-source models that offer similar capabilities with full transparency and flexibility [View all open source models](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models?feature=llm&provider=open-source-models) [MU Popular](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/modelslab/uncensored-chat)[ModelsLab](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/modelslab) [Modelslab: Uncensored Chat Open Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/modelslab/uncensored-chat) About 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/reasoningreasoning-mode ### Technical Specifications Model IDopenai-gpt-5.6-terra-pro CategoryLLM Models TaskText Generation Price$8.75 per million tokens AddedJuly 9, 2026 ### Key Features - Chat completion and multi-turn conversation API - Streaming response with token-by-token output - Function calling and tool use support - System prompts and role-based messaging - JSON mode and structured output ### Quick Start Integrate OpenAI: GPT-5.6 Terra Pro into your application with a single API call. Get your API key from the [pricing page](https://modelslab-frontend-v2-927501783998.us-east4.run.app/pricing) to get started. PythonJavaScriptcURLPHP ``` import requests import json url = "https://modelslab.com/api/v7/llm/chat/completions" headers = { "Content-Type": "application/json" } data = { "model_id": "openai-gpt-5.6-terra-pro", "messages": [ { "role": "user", "content": "Hello!" } ], "max_tokens": 1000, "key": "YOUR_API_KEY" } try: response = requests.post(url, headers=headers, json=data) response.raise_for_status() # Raises an HTTPError for bad responses (4XX or 5XX) result = response.json() print("API Response:") print(json.dumps(result, indent=2)) except requests.exceptions.HTTPError as http_err: print(f"HTTP error occurred: {http_err} - {response.text}") except Exception as err: print(f"Other error occurred: {err}") ``` ### Pricing OpenAI: GPT-5.6 Terra Pro API costs $8.750000 per million tokens. Pay only for what you use with no minimum commitments. [View pricing plans](https://modelslab-frontend-v2-927501783998.us-east4.run.app/pricing) ### Use Cases - AI chatbots and virtual assistants - Code generation and developer tools - Content writing and copywriting automation - Data analysis, summarization, and extraction [Browse LLM Models](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models?feature=llmaster) [More from Openai](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [View Pricing](https://modelslab-frontend-v2-927501783998.us-east4.run.app/pricing) OpenAI: GPT-5.6 Terra Pro FAQ --- ### 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 ### How do I use the OpenAI: GPT-5.6 Terra Pro API? You can integrate OpenAI: GPT-5.6 Terra Pro into your application with a single API call. Sign up on ModelsLab to get your API key, then use the model ID "openai-gpt-5.6-terra-pro" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation. ### How much does OpenAI: GPT-5.6 Terra Pro cost? OpenAI: GPT-5.6 Terra Pro costs $8.750000 per million tokens. ModelsLab uses pay-per-use pricing with no minimum commitments. A free tier is available to get started. ### What is the OpenAI: GPT-5.6 Terra Pro model ID? The model ID for OpenAI: GPT-5.6 Terra Pro is "openai-gpt-5.6-terra-pro". Use this ID in your API requests to specify this model. ### Does OpenAI: GPT-5.6 Terra Pro have a free tier? Yes, ModelsLab offers a free tier that lets you try OpenAI: GPT-5.6 Terra Pro and other AI models. Sign up to get free API credits and start building immediately. --- *This markdown version is optimized for AI agents and LLMs.* **Links:** - [Website](https://modelslab.com) - [API Documentation](https://docs.modelslab.com) - [Blog](https://modelslab.com/blog) --- *Generated by ModelsLab - 2026-07-12*