APInex Free AI Models

Duration: No expiration
Expiry date: No fixed end date
Updated: Jan 1, 2026

Available models (9)click to copy

Overview

APInex provides developers with direct, free API access to a selection of conversational and reasoning models. Users can integrate large language models into workflows without upfront subscription fees or credit card requirements.

Available Free Models

All free tier models include a 1M token context window:

Model Name	Endpoint Identifier	Context Window	Request Weight
Gemini 3.8 Flash	`free/gemini-3.8-flash`	1M	$\times 4$
GLM-5.3 Flash	`free/glm-5.3-flash`	1M	$\times 3$
Gpt 5.6 Luna	`free/gpt-5.6-luna`	1M	$\times 3$
Gemini 3.1 Pro	`free/gemini-3.1-pro`	1M	$\times 2$
Deepseek V4 Flash	`free/deepseek-v4-flash-0731`	1M	$\times 2$
Deepseek V4 Pro	`free/deepseek-v4-pro-0813`	1M	$\times 2$
Deepseek V4.1 Flash	`free/deepseek-v4.1-flash`	1M	$\times 2$
Qwen 3.8 MAX	`free/qwen-3.8-max`	1M	$\times 2$
Muse Spark 1.3	`free/muse-spark-1.3`	1M	$\times 1$

How to Get Started

Create an account via the APInex Registration portal.
Obtain an API key from the developer dashboard.
Route requests to standard OpenAI-compatible completions or chat endpoints using the model prefixes above.