--- title: Z.ai: GLM 5.3 Prime API | Text Generation | ModelsLab description: Build with Z.ai: GLM 5.3 Prime API by Z.ai. Text generation, chat, code, and reasoning. Plans from $21/month. url: https://modelslab.com/models/z-ai/z-ai-glm-5.3-prime.md canonical: https://modelslab.com/models/z-ai/z-ai-glm-5.3-prime type: product component: Playground/LLM/Index generated_at: 2026-09-30T08:17:20.977157Z --- Z.ai: GLM 5.3 Prime --- [LLMs.txt](https://modelslab.com/models/z-ai/z-ai-glm-5.3-prime/llms.txt) [.md](https://modelslab.com/models/z-ai/z-ai-glm-5.3-prime.md) Z.ai: GLM 5.3 Prime --- 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 text files Send ### Z.ai: GLM 5.3 Prime z-ai z-ai-glm-5.3-prime Copy model ID PricingInput $2.80 / 1M tokens Output $8.80 / 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 Tokens4000 Top P0.9 Frequency Penalty0 Presence Penalty0 Thinkinglow lowmediumhigh Deeper thinking spends more of the Max Tokens budget before the answer starts. Model Info Support Looking for something different? --- Models that trade off differently against the one you are viewing ### Better quality Newer flagship models that generally produce stronger results. [OpenAI](https://modelslab.com/models/openai) [GPT 5.2](https://modelslab.com/models/openai/gpt-5.2) [OpenAI](https://modelslab.com/models/openai) [GPT 5.1](https://modelslab.com/models/openai/gpt5.1) [Google](https://modelslab.com/models/google) [Gemini 3 Pro Preview](https://modelslab.com/models/google/gemini-3-pro-preview) [OpenAI](https://modelslab.com/models/openai) [GPT-5.1-Codex-Max](https://modelslab.com/models/openai/gpt-5.1-codex-max) ### Lower cost per run Open-source models we host, unlimited on the $149/month plan. [ModelsLab](https://modelslab.com/models/modelslab) Popular [Modelslab: Custom LLM](https://modelslab.com/models/modelslab/uncensored-chat)Open Source Model [Qwen](https://modelslab.com/models/open_router) [Qwen: Qwen3 235B A22B Instruct 2507](https://modelslab.com/models/qwen/qwen-qwen3-235b-a22b-2507)Closed Source Model [Google](https://modelslab.com/models/google) [Gemini 2.5 Flash](https://modelslab.com/models/google/gemini-2.5-flash)Closed Source Model [OpenAI](https://modelslab.com/models/openai) [gpt-oss-20b](https://modelslab.com/models/openai/gpt-oss-20b)Closed Source Model [DeepSeek](https://modelslab.com/models/open_router) [DeepSeek: DeepSeek V4 Flash 0423](https://modelslab.com/models/deepseek/deepseek-deepseek-v4-flash)Closed Source Model [Google](https://modelslab.com/models/open_router) [Google: Gemini 3.1 Flash Lite](https://modelslab.com/models/google/google-gemini-3.1-flash-lite)Closed Source Model Related Models --- Discover similar models you might be interested in [View all LLM Models](https://modelslab.com/models?feature=llmaster) [#### OpenAI/OpenAI: GPT-6 Astra openai-gpt-6-astra From $30.00/M tokens](https://modelslab.com/models/openai/openai-gpt-6-astra) [#### Qwen/Qwen: Qwen3 VL 235B A22B Thinking qwen-qwen3-vl-235b-a22b-thinking From $2.20/M tokens](https://modelslab.com/models/qwen/qwen-qwen3-vl-235b-a22b-thinking) [#### Qwen/Qwen: Qwen3 Coder Flash qwen-qwen3-coder-flash From $0.58/M tokens](https://modelslab.com/models/qwen/qwen-qwen3-coder-flash) [#### Xiaomi/Xiaomi: MiMo-V2.6-Pro-UltraSpeed xiaomi-mimo-v2.6-pro-ultraspeed From $6.53/M tokens](https://modelslab.com/models/xiaomi/xiaomi-mimo-v2.6-pro-ultraspeed) [#### Thedrummer/TheDrummer: UnslopNemo 12B thedrummer-unslopnemo-12b From $0.40/M tokens](https://modelslab.com/models/thedrummer/thedrummer-unslopnemo-12b) [#### Alibaba Cloud/Qwen: Qwen3.5 397B A17B qwen-qwen3.5-397b-a17b From $2.10/M tokens](https://modelslab.com/models/alibaba_cloud/qwen-qwen3.5-397b-a17b) [#### Thinking Machines/Thinking Machines: Inkling (free) thinkingmachines-inkling-free Free](https://modelslab.com/models/thinkingmachines/thinkingmachines-inkling-free) [#### OpenAI/OpenAI: GPT-3.5 Turbo Instruct openai-gpt-3.5-turbo-instruct From $1.75/M tokens](https://modelslab.com/models/openai/openai-gpt-3.5-turbo-instruct) [#### Anthracite/Magnum v4 72B anthracite-org-magnum-v4-72b From $3.75/M tokens](https://modelslab.com/models/anthracite-org/anthracite-org-magnum-v4-72b) [#### Meta/Llama 4 Maverick Instruct (17Bx128E) meta-llama-Llama-4-Maverick-17B-128E-Instruct-FP8 From $0.56/M tokens](https://modelslab.com/models/meta/meta-llama-Llama-4-Maverick-17B-128E-Instruct-FP8) [#### OpenAI/OpenAI: GPT-4o (2024-11-20) openai-gpt-4o-2024-11-20 From $6.25/M tokens](https://modelslab.com/models/openai/openai-gpt-4o-2024-11-20) [#### Google/Google: Nano Banana Pro (Gemini 3 Pro Image) google-gemini-3-pro-image From $7.00/M tokens](https://modelslab.com/models/google/google-gemini-3-pro-image) [#### OpenAI/OpenAI: GPT-4o-mini openai-gpt-4o-mini From $0.38/M tokens](https://modelslab.com/models/openai/openai-gpt-4o-mini) [#### Google/Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) google-gemini-3.1-flash-image-preview From $1.75/M tokens](https://modelslab.com/models/google/google-gemini-3.1-flash-image-preview) [#### Qwen/Qwen: Qwen3 VL 30B A3B Instruct qwen-qwen3-vl-30b-a3b-instruct From $0.38/M tokens](https://modelslab.com/models/qwen/qwen-qwen3-vl-30b-a3b-instruct) [#### DeepSeek/DeepSeek: DeepSeek V3.2 Exp deepseek-deepseek-v3.2-exp From $0.34/M tokens](https://modelslab.com/models/deepseek/deepseek-deepseek-v3.2-exp) [#### Undi95/ReMM SLERP 13B undi95-remm-slerp-l2-13b From $0.50/M tokens](https://modelslab.com/models/undi95/undi95-remm-slerp-l2-13b) [#### Qwen/Qwen: Qwen3.6 Plus qwen-qwen3.6-plus From $1.14/M tokens](https://modelslab.com/models/qwen/qwen-qwen3.6-plus) About Z.Ai: GLM 5.3 Prime --- GLM-5.3-Prime is the high-speed variant of Z.ai's GLM-5.3, inheriting its full capabilities while delivering 1.5–2× the output throughput through inference acceleration. It supports text input and output with a 1M-token... ### Technical Specifications Model IDz-ai-glm-5.3-prime CategoryLLM Models TaskText Generation Price$5.8 per million tokens AddedSeptember 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 Z.Ai: GLM 5.3 Prime into your application with a single API call. Get your API key from the [pricing page](https://modelslab.com/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": "z-ai-glm-5.3-prime", "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 Z.Ai: GLM 5.3 Prime API costs $5.8 per million tokens. Plans start at $21/month, and open-source models are unlimited on the $149/month plan. [View pricing plans](https://modelslab.com/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.com/models?feature=llmaster) [More from Z.ai](https://modelslab.com/models/open_router) [View Pricing](https://modelslab.com/pricing) Z.Ai: GLM 5.3 Prime FAQ --- ### What is Z.Ai: GLM 5.3 Prime? GLM-5.3-Prime is the high-speed variant of Z.ai's GLM-5.3, inheriting its full capabilities while delivering 1.5–2× the output throughput through inference acceleration. It supports text input and output with a 1M-token... ### How do I use the Z.Ai: GLM 5.3 Prime API? You can integrate Z.Ai: GLM 5.3 Prime into your application with a single API call. Sign up on ModelsLab to get your API key, then use the model ID "z-ai-glm-5.3-prime" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation. ### How much does Z.Ai: GLM 5.3 Prime cost? Z.Ai: GLM 5.3 Prime costs $5.8 per million tokens. ModelsLab plans start at $21/month (Basic), and the $149/month Open Source plan includes unlimited generation on open-source models. ### What is the Z.Ai: GLM 5.3 Prime model ID? The model ID for Z.Ai: GLM 5.3 Prime is "z-ai-glm-5.3-prime". Use this ID in your API requests to specify this model. ### Do I need a paid plan to use Z.Ai: GLM 5.3 Prime? Yes. ModelsLab is subscription-based with no free tier — plans start at $21/month (Basic, 3,250 API calls). The $149/month Open Source Unlimited plan includes unlimited generation across open-source models; premium third-party models are billed per call from your wallet. --- *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 - 2026-09-30*