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Open-source AI model API: cut your AI bill by 80%+ vs closed models

One API key, every model on the list — Open-source LLM inference for chat, code, reasoning, long context and images. Pay only for the tokens you use, capped by your prepaid balance.

Why pay closed-model prices for every task?

Leading open-source models are strong enough to handle most of the work your team sends them — often at a fraction of the cost of closed models.

Game Prototype

Prototype a two-player Snake game

Large Refactor

Port and clean up a large codebase

Bulk Translation

Translate 100 research papers into English

Image Tasks

Write alt text and descriptions for 1,000 product photos

Ticket Triage

Tag 1,000 support tickets and draft replies

Examples: same token volume for both sides × official list price per 1M tokens of the models named (checked 2026-10-29). Newer closed models may cost less; batch discounts are not included.

AI model API pricing per 1M tokens

How AI API pricing works

Input Price
Billed per 1M tokens
Cache Hit
Billed per 1M tokens
Output Price
Billed per 1M tokens

Charged against your prepaid balance — you never spend more than you deposit. Same open models, at a lower price.

Other providers: official price pages checked 2026-10-29 (select a name to open the source). Peak = peak-hour list price; DeepSeek and Alibaba Cloud charge 50% less off-peak, below Cloudj prices at those hours. — = no published cache price. Alibaba Cloud and Tencent Cloud: Singapore region. Product names are trademarks of their owners; Cloudj is not affiliated with them.

Open-source LLMs on one API. Test each on your own prompts.

Benchmarks are a starting point. Your own results matter more. One API key works for every model listed here, and you pay only for the tokens you use. Try chat, code, reasoning, long context and images yourself.

deepseek-v4.1-flash

Fast replies and strong code generation

kimi-k3

Flagship reasoning model that also reads images

glm-5.3-flash

Lightweight multimodal model, low cost per token

glm-5.3

General-purpose flagship for complex, multi-step work

Pick a model. Get that exact model.

Each request goes to the open-source model you choose — no silent swaps to a cheaper one.

Try a model now

AI model API FAQ: billing, speed and data

Billing, speed, data and deployment — here is exactly what to expect from Cloudj AI Services.

Ready to ship with open-source AI? Get an API key in minutes.

Fund your wallet, create an API Key, and update the Base URL in your app—pay only for the Tokens you use.