> ## Documentation Index
> Fetch the complete documentation index at: https://docs.rockapi.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Blog

> Practical API marketplace guides for buyers and sellers using Rock API.

# Blog

Read practical guides for buying, selling, and operating APIs with Rock API. Start with the AI API guides if you want to reduce model cost, compare gateways, or migrate from direct provider APIs.

<Columns cols={2}>
  <Card title="For buyers" icon="shopping-cart" href="/blog/buyers">
    Learn how to choose AI and OpenAPI services, control integration costs, compare gateways, and manage access safely.
  </Card>

  <Card title="For sellers" icon="store" href="/blog/sellers">
    Learn how to publish an API, design pricing, create subscription plans, and improve buyer conversion.
  </Card>
</Columns>

## Start with the right path

* To use official-channel Alibaba Qwen models for 30% less, read [Alibaba Qwen API at 0.7x pricing](/blog/buyers/alibaba-qwen-api-70-off).
* If you want one API for OpenAI, Anthropic, and Google models, start with [AI API gateway](/blog/buyers/ai-api-gateway).
* If you want to reduce model spend, start with [Cheap AI API](/blog/buyers/cheap-ai-api).
* If you want to evaluate a translation API, read [AI Translate usage](/blog/buyers/ai-translate-usage-openapi-market).
* If you want to forecast translation spend, compare [AI Translate character pricing](/blog/buyers/ai-translate-character-pricing).
* If you want to see multilingual product, support, and automation workflows, watch the [AI translation API overview](/blog/buyers/ai-translation-api-for-multilingual-products).
* If you subscribe to APIs, start with [For buyers](/blog/buyers).
* If you publish APIs, start with [For sellers](/blog/sellers).
* If you are new to Rock API, follow the [Quickstart](/quickstart).