Agnes AI Free API

Overview

Agnes AI is an OpenAI-compatible API hub from SapiensAI providing text, image, video, and multimodal models. Its core models are free to use without a subscription: agnes-2.5-flash, agnes-3.0-flash, the Agnes Image Flash series, and select video models are currently billed at $0. The FAQ states core models remain free without a time limit.

Free Models & Current Pricing

Text

• agnes-2.5-flash — cached input, input tokens, and output tokens all $0/M (list prices $0.005–$0.15/M)
• agnes-3.0-flash — cached input, input tokens, and output tokens all $0/M (list prices $0.005–$0.15/M)

Image

• agnes-image-2.0-flash, agnes-image-2.1-flash, agnes-image-2.5-flash — all output resolution tiers (1K–4K) and input reference images are $0

Video

• agnes-video-v2.0 — $0/second
• agnes-video-2.5-flash — free for a limited time (list price $0.025/second at 720P)

Paid models

• agnes-2.5-pro: $0.45/M input, $0.90/M output
• agnes-2.5-pro-beta: $0.10/M input, $0.30/M output
• agnes-video-2.5: $0.025–$0.055 per second depending on output resolution

Free Tier Rate Limits

Free/default users (no Token Plan) are limited by requests per minute: text 20 effective RPM, image 20 RPM at 1K, 10 at 2K, 1 at 3K/4K, and video 1 RPM. Limits are shared across all API keys of the same type — creating multiple free keys does not increase the pool.

How to Get Started

1. Sign up at platform.agnes-ai.com and open the developer console
2. Create an API key and store it immediately — the full key is shown only once
3. Send requests to Base URL https://apihub.agnes-ai.com/v1 with Authorization: Bearer YOUR_API_KEY

Endpoints: /chat/completions, /responses, or /messages for text; /images/generations for images; /videos for video.