--- title: OpenAI: GPT 5 API | Text Generation | ModelsLab description: Advanced LLM with 400K token context, multimodal input (text/image), superior reasoning/coding (88% benchmarks), multi-stage routing, and agentic. url: https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/openai/openai-gpt-5/api.md canonical: https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/openai/openai-gpt-5/api.md type: product component: Playground/LLM/Index generated_at: 2026-05-13T10:32:45.195620Z --- OpenAI: GPT-5 --- [LLMs.txt](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/openai-gpt-5/llms.txt) [.md](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/openai/openai-gpt-5.md) openai-gpt-5 openai Closed Source Model $5.625000 / call OpenAI: GPT-5 --- 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 openai openai-gpt-5 Copy model ID PricingInput $1.25 / 1M tokens Output $10.00 / 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) [G3](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/google-gemma-3-270m-it)[Together AI](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai) [Gemma 3 270M It Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/google-gemma-3-270m-it) [AC](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/anthropic-claude-opus-4.5)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [Anthropic: Claude Opus 4.5 Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/anthropic-claude-opus-4.5) [PL](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/poolside-laguna-xs.2-free)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [Poolside: Laguna XS.2 (free) Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/poolside-laguna-xs.2-free) [DR](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/deepseek-ai-DeepSeek-R1-Distill-Qwen-7B)[Together AI](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai) [DeepSeek R1 Distill Qwen 7B Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/deepseek-ai-DeepSeek-R1-Distill-Qwen-7B) [OG](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/openai-gpt-audio-mini)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [OpenAI: GPT Audio Mini Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/openai-gpt-audio-mini) [NN](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/nvidia-NVIDIA-Nemotron-3-Super-120B-A12B-BF16)[Together AI](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai) [Nvidia Nemotron 3 Super 120B A12b Bf16 Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/nvidia-NVIDIA-Nemotron-3-Super-120B-A12B-BF16) [MK](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/moonshotai-kimi-k2.5)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [MoonshotAI: Kimi K2.5 Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/moonshotai-kimi-k2.5) [WP](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/writer-palmyra-x5)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [Writer: Palmyra X5 Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/writer-palmyra-x5) [Q3](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/Qwen-Qwen2.5-32B)[Together AI](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai) [Qwen2.5 32B Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/Qwen-Qwen2.5-32B) [BS](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/bytedance-seed-seed-2.0-lite)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [ByteDance Seed: Seed-2.0-Lite Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/bytedance-seed-seed-2.0-lite) [MD](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/mistralai-devstral-small)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [Mistral: Devstral Small 1.1 Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/mistralai-devstral-small) [QC](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/Qwen-Qwen3-Coder-30B-A3B-Instruct)[Together AI](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai) [Qwen3 Coder 30B A3b Instruct Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/Qwen-Qwen3-Coder-30B-A3B-Instruct) [ZG](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/z-ai-glm-4.6)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [Z.ai: GLM 4.6 Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/z-ai-glm-4.6) [DR](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/deepseek-ai-DeepSeek-R1-Distill-Llama-70B)[Together AI](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai) [DeepSeek R1 Distill Llama 70B Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/deepseek-ai-DeepSeek-R1-Distill-Llama-70B) [Q1](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/Qwen-Qwen3.5-122B-A10B-FP8)[Together AI](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai) [Qwen3.5 122B A10b Fp8 Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/Qwen-Qwen3.5-122B-A10B-FP8) [BQ](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/baidu-cobuddy-free)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [Baidu Qianfan: CoBuddy (free) Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/baidu-cobuddy-free) [OG](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/openai-gpt-4o-audio-preview)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [OpenAI: GPT-4o Audio Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/openai-gpt-4o-audio-preview) [NN](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/nvidia-nemotron-nano-9b-v2-free)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [NVIDIA: Nemotron Nano 9B V2 (free) Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/nvidia-nemotron-nano-9b-v2-free) About OpenAI: GPT-5 --- GPT-5 is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy... ### Technical Specifications Model IDopenai-gpt-5CategoryLLM ModelsTaskText GenerationPrice$5.625000 per million tokensAddedFebruary 20, 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 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", "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}") ``` View the [full API documentation](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/openai/openai-gpt-5/api) for SDKs, code examples in Python, JavaScript, and more. ### Pricing OpenAI: GPT-5 API costs $5.625000 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 [Learn more about OpenAI: GPT-5](https://modelslab-frontend-v2-927501783998.us-east4.run.app/openai-gpt-5) [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 FAQ --- ### What is OpenAI: GPT-5? GPT-5 is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy... ### How do I use the OpenAI: GPT-5 API? You can integrate OpenAI: GPT-5 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" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation. ### How much does OpenAI: GPT-5 cost? OpenAI: GPT-5 costs $5.625000 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 model ID? The model ID for OpenAI: GPT-5 is "openai-gpt-5". Use this ID in your API requests to specify this model. ### Does OpenAI: GPT-5 have a free tier? Yes, ModelsLab offers a free tier that lets you try OpenAI: GPT-5 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 - 2026-05-13*