--- title: LiquidAI: LFM2.5 1.2B Thinking (free) | Text Generation | ModelsLab description: Open-weight reasoning model with 1.2B parameters, runs on-device under 1GB RAM, excels at math and logic tasks—free to download and deploy across Apple. url: https://modelslab.com/models/liquid/liquid-lfm-2.5-1.2b-thinking-free/api.md canonical: https://modelslab.com/models/liquid/liquid-lfm-2.5-1.2b-thinking-free/api.md type: product component: Playground/LLM/Index generated_at: 2026-04-15T02:06:22.777088Z --- LiquidAI: LFM2.5-1.2B-Thinking (free) --- [LLMs.txt](https://modelslab.com/models/open_router/liquid-lfm-2.5-1.2b-thinking-free/llms.txt) [.md](https://modelslab.com/models/liquid/liquid-lfm-2.5-1.2b-thinking-free.md) liquid-lfm-2.5-1.2b-thinking-free liquid Closed Source Model LiquidAI: LFM2.5-1.2B-Thinking (free) --- 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 ### LiquidAI: LFM2.5-1.2B-Thinking (free) liquid liquid-lfm-2.5-1.2b-thinking-free Copy model ID PricingInput $0.00 / 1M tokens Output $0.00 / 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.com/models?feature=llmaster) [G5](https://modelslab.com/models/together_ai/zai-org-GLM-5.1)[Together AI](https://modelslab.com/models/together_ai) [GLM 5.1 FP4 Closed Source Model](https://modelslab.com/models/together_ai/zai-org-GLM-5.1) [T2](https://modelslab.com/models/scb10x/scb10x-scb10x-llama3-1-typhoon2-70b-instruct)[ModelsLab](https://modelslab.com/models/scb10x) [Typhoon 2 70B Instruct Closed Source Model](https://modelslab.com/models/scb10x/scb10x-scb10x-llama3-1-typhoon2-70b-instruct) [QQ](https://modelslab.com/models/open_router/qwen-qwen3-vl-30b-a3b-thinking)[Open Router](https://modelslab.com/models/open_router) [Qwen: Qwen3 VL 30B A3B Thinking Closed Source Model](https://modelslab.com/models/open_router/qwen-qwen3-vl-30b-a3b-thinking) [OG](https://modelslab.com/models/open_router/openai-gpt-4o-mini-search-preview)[Open Router](https://modelslab.com/models/open_router) [OpenAI: GPT-4o-mini Search Preview Closed Source Model](https://modelslab.com/models/open_router/openai-gpt-4o-mini-search-preview) [Q1](https://modelslab.com/models/together_ai/Qwen-Qwen3-1.7B-Base)[Together AI](https://modelslab.com/models/together_ai) [Qwen3 1.7B Base Closed Source Model](https://modelslab.com/models/together_ai/Qwen-Qwen3-1.7B-Base) [NN](https://modelslab.com/models/open_router/nvidia-nemotron-3-nano-30b-a3b-free)[Open Router](https://modelslab.com/models/open_router) [NVIDIA: Nemotron 3 Nano 30B A3B (free) Closed Source Model](https://modelslab.com/models/open_router/nvidia-nemotron-3-nano-30b-a3b-free) [AC](https://modelslab.com/models/open_router/anthropic-claude-opus-4)[Open Router](https://modelslab.com/models/open_router) [Anthropic: Claude Opus 4 Closed Source Model](https://modelslab.com/models/open_router/anthropic-claude-opus-4) [QQ](https://modelslab.com/models/open_router/qwen-qwen-turbo)[Open Router](https://modelslab.com/models/open_router) [Qwen: Qwen-Turbo Closed Source Model](https://modelslab.com/models/open_router/qwen-qwen-turbo) [Q1](https://modelslab.com/models/together_ai/Qwen-Qwen2.5-14B)[Together AI](https://modelslab.com/models/together_ai) [Qwen2.5 14B Closed Source Model](https://modelslab.com/models/together_ai/Qwen-Qwen2.5-14B) [NH](https://modelslab.com/models/open_router/nousresearch-hermes-3-llama-3.1-70b)[Open Router](https://modelslab.com/models/open_router) [Nous: Hermes 3 70B Instruct Closed Source Model](https://modelslab.com/models/open_router/nousresearch-hermes-3-llama-3.1-70b) [MK](https://modelslab.com/models/open_router/moonshotai-kimi-k2-0905)[Open Router](https://modelslab.com/models/open_router) [MoonshotAI: Kimi K2 0905 Closed Source Model](https://modelslab.com/models/open_router/moonshotai-kimi-k2-0905) [MM](https://modelslab.com/models/open_router/mistralai-mistral-small-24b-instruct-2501)[Open Router](https://modelslab.com/models/open_router) [Mistral: Mistral Small 3 Closed Source Model](https://modelslab.com/models/open_router/mistralai-mistral-small-24b-instruct-2501) [GG](https://modelslab.com/models/open_router/google-gemini-3-flash-preview)[Open Router](https://modelslab.com/models/open_router) [Google: Gemini 3 Flash Preview Closed Source Model](https://modelslab.com/models/open_router/google-gemini-3-flash-preview) [NN](https://modelslab.com/models/together_ai/nvidia-NVIDIA-Nemotron-3-Nano-30B-A3B-BF16)[Together AI](https://modelslab.com/models/together_ai) [Nvidia Nemotron 3 Nano 30B A3b Bf16 Closed Source Model](https://modelslab.com/models/together_ai/nvidia-NVIDIA-Nemotron-3-Nano-30B-A3B-BF16) [Q9](https://modelslab.com/models/together_ai/Qwen-Qwen3.5-9B)[Together AI](https://modelslab.com/models/together_ai) [Qwen3.5 9B FP8 Closed Source Model](https://modelslab.com/models/together_ai/Qwen-Qwen3.5-9B) [MV](https://modelslab.com/models/open_router/mistralai-voxtral-small-24b-2507)[Open Router](https://modelslab.com/models/open_router) [Mistral: Voxtral Small 24B 2507 Closed Source Model](https://modelslab.com/models/open_router/mistralai-voxtral-small-24b-2507) [QQ](https://modelslab.com/models/open_router/qwen-qwen3-vl-235b-a22b-instruct)[Open Router](https://modelslab.com/models/open_router) [Qwen: Qwen3 VL 235B A22B Instruct Closed Source Model](https://modelslab.com/models/open_router/qwen-qwen3-vl-235b-a22b-instruct) [XG](https://modelslab.com/models/open_router/x-ai-grok-3-mini-beta)[Open Router](https://modelslab.com/models/open_router) [xAI: Grok 3 Mini Beta Closed Source Model](https://modelslab.com/models/open_router/x-ai-grok-3-mini-beta) About LiquidAI: LFM2.5-1.2B-Thinking (Free) --- LFM2.5-1.2B-Thinking is a lightweight reasoning-focused model optimized for agentic tasks, data extraction, and RAG—while still running comfortably on edge devices. It supports long context (up to 32K tokens) and is... ### Technical Specifications Model IDliquid-lfm-2.5-1.2b-thinking-freeCategoryLLM ModelsTaskText GenerationAddedFebruary 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 LiquidAI: LFM2.5-1.2B-Thinking (Free) 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": "liquid-lfm-2.5-1.2b-thinking-free", "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.com/models/liquid/liquid-lfm-2.5-1.2b-thinking-free/api) for SDKs, code examples in Python, JavaScript, and more. ### 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 LiquidAI: LFM2.5-1.2B-Thinking (Free)](https://modelslab.com/liquidai-lfm25-12b-thinking-free) [Browse LLM Models](https://modelslab.com/models?feature=llmaster) [More from Liquid](https://modelslab.com/models/open_router) [View Pricing](https://modelslab.com/pricing) LiquidAI: LFM2.5-1.2B-Thinking (Free) FAQ --- ### What is LiquidAI: LFM2.5-1.2B-Thinking (Free)? LFM2.5-1.2B-Thinking is a lightweight reasoning-focused model optimized for agentic tasks, data extraction, and RAG—while still running comfortably on edge devices. It supports long context (up to 32K tokens) and is... ### How do I use the LiquidAI: LFM2.5-1.2B-Thinking (Free) API? You can integrate LiquidAI: LFM2.5-1.2B-Thinking (Free) into your application with a single API call. Sign up on ModelsLab to get your API key, then use the model ID "liquid-lfm-2.5-1.2b-thinking-free" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation. ### What is the LiquidAI: LFM2.5-1.2B-Thinking (Free) model ID? The model ID for LiquidAI: LFM2.5-1.2B-Thinking (Free) is "liquid-lfm-2.5-1.2b-thinking-free". Use this ID in your API requests to specify this model. ### Does LiquidAI: LFM2.5-1.2B-Thinking (Free) have a free tier? Yes, ModelsLab offers a free tier that lets you try LiquidAI: LFM2.5-1.2B-Thinking (Free) 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 - 2026-04-15*