--- title: OpenAI: GPT 3.5 Turbo API | Text Generation | ModelsLab description: Build with OpenAI: GPT 3.5 Turbo 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-3.5-turbo/api.md canonical: https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/openai/openai-gpt-3.5-turbo/api.md type: product component: Playground/LLM/Index generated_at: 2026-05-13T10:36:43.348278Z --- OpenAI: GPT-3.5 Turbo --- [LLMs.txt](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/openai-gpt-3.5-turbo/llms.txt) [.md](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/openai/openai-gpt-3.5-turbo.md) openai-gpt-3.5-turbo openai Closed Source Model $1.000000 / call OpenAI: GPT-3.5 Turbo --- 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-3.5 Turbo openai openai-gpt-3.5-turbo Copy model ID PricingInput $0.50 / 1M tokens Output $1.50 / 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) [QQ](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/qwen-qwen3-vl-32b-instruct)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [Qwen: Qwen3 VL 32B Instruct Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/qwen-qwen3-vl-32b-instruct) [OG](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/openai-gpt-oss-20b-free)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [OpenAI: gpt-oss-20b (free) Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/openai-gpt-oss-20b-free) [AC](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/alfredpros-codellama-7b-instruct-solidity)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [AlfredPros: CodeLLaMa 7B Instruct Solidity Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/alfredpros-codellama-7b-instruct-solidity) [ZG](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/z-ai-glm-4-32b)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [Z.ai: GLM 4 32B Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/z-ai-glm-4-32b) [GO](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/zai-org-GLM-OCR)[Together AI](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai) [GLM OCR Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/zai-org-GLM-OCR) [GG](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/google-gemini-2.0-flash-lite-001)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [Google: Gemini 2.0 Flash Lite Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/google-gemini-2.0-flash-lite-001) [Q0](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/Qwen-Qwen3-0.6B)[Together AI](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai) [Qwen3 0.6B Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/Qwen-Qwen3-0.6B) [QQ](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/qwen-qwen3-max-thinking)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [Qwen: Qwen3 Max Thinking Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/qwen-qwen3-max-thinking) [ZG](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/z-ai-glm-5-turbo)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [Z.ai: GLM 5 Turbo Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/z-ai-glm-5-turbo) [N3](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/nim-meta-llama-3.3-70b-instruct)[Together AI](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai) [nim/meta/llama-3.3-70b-instruct Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/nim-meta-llama-3.3-70b-instruct) [KK](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/moonshotai-Kimi-K2.5)[Together AI](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai) [Kimi K2.5 Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/moonshotai-Kimi-K2.5) [DD](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/deepseek-deepseek-v3.1-terminus)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [DeepSeek: DeepSeek V3.1 Terminus Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/deepseek-deepseek-v3.1-terminus) [G5](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/zai-org-GLM-5.1)[Together AI](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai) [GLM 5.1 FP4 Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/zai-org-GLM-5.1) [KK](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/moonshotai-Kimi-K2.6)[Together AI](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai) [Kimi K2.6 Fp4 Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/together_ai/moonshotai-Kimi-K2.6) [MK](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/moonshotai-kimi-k2.6)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [MoonshotAI: Kimi K2.6 Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/moonshotai-kimi-k2.6) [OG](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/openai-gpt-5)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [OpenAI: GPT-5 Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/openai-gpt-5) [Q7](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/qwen/Qwen-Qwen2.5-7B-Instruct-Turbo)[ModelsLab](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/qwen) [Qwen2.5 7B Instruct Turbo Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/qwen/Qwen-Qwen2.5-7B-Instruct-Turbo) [AA](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/aion-labs-aion-rp-llama-3.1-8b)[Open Router](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [AionLabs: Aion-RP 1.0 (8B) Closed Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/aion-labs-aion-rp-llama-3.1-8b) About OpenAI: GPT-3.5 Turbo --- GPT-3.5 Turbo is OpenAI's fastest model. It can understand and generate natural language or code, and is optimized for chat and traditional completion tasks. Training data up to Sep 2021. ### Technical Specifications Model IDopenai-gpt-3.5-turboCategoryLLM ModelsTaskText GenerationPrice$1.000000 per million tokensAddedFebruary 23, 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-3.5 Turbo 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-3.5-turbo", "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-3.5-turbo/api) for SDKs, code examples in Python, JavaScript, and more. ### Pricing OpenAI: GPT-3.5 Turbo API costs $1.000000 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-3.5 Turbo](https://modelslab-frontend-v2-927501783998.us-east4.run.app/openai-gpt-35-turbo) [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-3.5 Turbo FAQ --- ### What is OpenAI: GPT-3.5 Turbo? GPT-3.5 Turbo is OpenAI's fastest model. It can understand and generate natural language or code, and is optimized for chat and traditional completion tasks. Training data up to Sep 2021. ### How do I use the OpenAI: GPT-3.5 Turbo API? You can integrate OpenAI: GPT-3.5 Turbo into your application with a single API call. Sign up on ModelsLab to get your API key, then use the model ID "openai-gpt-3.5-turbo" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation. ### How much does OpenAI: GPT-3.5 Turbo cost? OpenAI: GPT-3.5 Turbo costs $1.000000 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-3.5 Turbo model ID? The model ID for OpenAI: GPT-3.5 Turbo is "openai-gpt-3.5-turbo". Use this ID in your API requests to specify this model. ### Does OpenAI: GPT-3.5 Turbo have a free tier? Yes, ModelsLab offers a free tier that lets you try OpenAI: GPT-3.5 Turbo 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*