--- title: OpenAI: GPT 5.6 Luna API | Text Generation | ModelsLab description: Build with OpenAI: GPT 5.6 Luna 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-luna.md canonical: https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/openai/openai-gpt-5.6-luna.md type: product component: Playground/LLM/Index generated_at: 2026-07-11T21:07:09.285996Z --- OpenAI: GPT-5.6 Luna --- [LLMs.txt](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/openai-gpt-5.6-luna/llms.txt) [.md](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/openai/openai-gpt-5.6-luna.md) OpenAI: GPT-5.6 Luna --- 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 Luna openai openai-gpt-5.6-luna Copy model ID PricingInput $1.00 / 1M tokens Output $6.00 / 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) [#### meta/Meta Llama 3.1 405B Instruct Turbo meta-llama-Meta-Llama-3.1-405B-Instruct-Turbo From $3.50/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/meta/meta-llama-Meta-Llama-3.1-405B-Instruct-Turbo) [#### open\_router/MiniMax: MiniMax M3 minimax-minimax-m3 From $0.75/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/minimax-minimax-m3) [#### qwen/Qwen2.5 72B Instruct Turbo Qwen-Qwen2.5-72B-Instruct-Turbo From $1.20/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/qwen/Qwen-Qwen2.5-72B-Instruct-Turbo) [#### open\_router/Z.ai: GLM 4.5V z-ai-glm-4.5v From $1.20/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/z-ai-glm-4.5v) [#### open\_router/Nex AGI: Nex-N2-Pro nex-agi-nex-n2-pro From $0.63/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/nex-agi-nex-n2-pro) [#### open\_router/Anthropic: Claude Opus 4.7 (Fast) anthropic-claude-opus-4.7-fast From $90.00/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/anthropic-claude-opus-4.7-fast) [#### deepseek/DeepSeek R1 Distill Qwen 1.5B deepseek-ai-DeepSeek-R1-Distill-Qwen-1.5B From $0.18/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/deepseek/deepseek-ai-DeepSeek-R1-Distill-Qwen-1.5B) [#### open\_router/TheDrummer: Skyfall 36B V2 thedrummer-skyfall-36b-v2 From $0.68/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/thedrummer-skyfall-36b-v2) [#### open\_router/Cohere: North Mini Code (free) cohere-north-mini-code-free Free](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/cohere-north-mini-code-free) [#### open\_router/Qwen: Qwen2.5 VL 72B Instruct qwen-qwen2.5-vl-72b-instruct From $0.90/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/qwen-qwen2.5-vl-72b-instruct) [#### open\_router/xAI: Grok 4.3 x-ai-grok-4.3 From $1.88/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/x-ai-grok-4.3) [#### 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) [#### open\_router/OpenAI: GPT-4o-mini Search Preview openai-gpt-4o-mini-search-preview From $0.38/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/openai-gpt-4o-mini-search-preview) [#### open\_router/DeepSeek: DeepSeek V4 Flash deepseek-deepseek-v4-flash From $0.12/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/deepseek-deepseek-v4-flash) [#### open\_router/Google Gemini Pro Latest google-gemini-pro-latest From $7.00/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/google-gemini-pro-latest) [#### open\_router/Qwen: Qwen3 Coder Plus qwen-qwen3-coder-plus From $1.95/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/qwen-qwen3-coder-plus) [#### open\_router/Qwen: Qwen3 30B A3B qwen-qwen3-30b-a3b From $0.31/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/qwen-qwen3-30b-a3b) [#### open\_router/Qwen: Qwen Plus 0728 (thinking) qwen-qwen-plus-2025-07-28-thinking From $0.52/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/qwen-qwen-plus-2025-07-28-thinking) 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 Luna --- GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning for... ### Technical Specifications Model IDopenai-gpt-5.6-luna CategoryLLM Models TaskText Generation Price$3.5 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 Luna 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-luna", "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 Luna API costs $3.500000 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 Luna FAQ --- ### What is OpenAI: GPT-5.6 Luna? GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning for... ### How do I use the OpenAI: GPT-5.6 Luna API? You can integrate OpenAI: GPT-5.6 Luna 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-luna" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation. ### How much does OpenAI: GPT-5.6 Luna cost? OpenAI: GPT-5.6 Luna costs $3.500000 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 Luna model ID? The model ID for OpenAI: GPT-5.6 Luna is "openai-gpt-5.6-luna". Use this ID in your API requests to specify this model. ### Does OpenAI: GPT-5.6 Luna have a free tier? Yes, ModelsLab offers a free tier that lets you try OpenAI: GPT-5.6 Luna 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*