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.
Prototype a two-player Snake game
Port and clean up a large codebase
Translate 100 research papers into English
Write alt text and descriptions for 1,000 product photos
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.
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.