# Bluusun

> Low-cost OpenAI-compatible API for DeepSeek and GLM

Bluusun is a prepaid OpenAI-compatible API. One key routes chat completions to DeepSeek and GLM. The price on the model list is the price charged. Credits are prepaid, and completion length is capped by the remaining balance. Editorial pages explain routing, spend caps, and how teams compare direct provider bills with one low-cost endpoint.

This site is a publisher. The homepage may redirect to the latest article.
Prefer Markdown: send `Accept: text/markdown` or append `/index.md` to any blog or knowledge URL.

## Start here
- [Blog](https://www.bluusun.com/blog/index.md): recent headlines
- [Knowledge Base](https://www.bluusun.com/knowledge/index.md): recent answers
- [Tools](https://www.bluusun.com/tools/): free client-side workflow tool for this site
- [Tool manifest](https://www.bluusun.com/tools/manifest.json): machine-readable tool spec (future ChatGPT Action / MCP)
- [About](https://www.bluusun.com/about/): who operates this site
- [RSS](https://www.bluusun.com/rss.xml): machine feed of recent posts
- [Sitemap](https://www.bluusun.com/sitemap.xml): full URL list
- [llms-full.txt](https://www.bluusun.com/llms-full.txt): longer index

## Recent articles
- [Prepaid AI API Spend: Cap DeepSeek and GLM Costs at $50/Month in 2026](https://www.bluusun.com/blog/prepaid-ai-api-spend-cap-deepseek-and-glm-costs-at-50month-in-2026.php/index.md)

## How to cite
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