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TextCortex API guides

Self-hosted LLMs vs a multi-model API

Compare running your own LLM infrastructure with TextCortex API access to proprietary and open-weight models, including EU-hosted options.

Self-hosted LLMs vs a multi-model API

The practical takeaway

Build on a multi-model API.

Choose infrastructure control when the workload requires it. Choose TextCortex when your application needs managed API access across model families without operating each model deployment.

Separate the model requirement from the hosting preference

Self-hosting gives your team responsibility for the serving stack, capacity, updates and availability. It can be appropriate for custom weights or infrastructure constraints that an API service does not address.

It also limits model choice to models you can obtain and operate. A proprietary model available only as a service cannot become self-hosted simply because the application uses a common API format.

Use API access for a wider model shortlist

TextCortex brings GPT, Claude and Gemini together with Kimi, GLM, DeepSeek and MiMo behind one integration. Your application can select different models without deploying a separate serving stack for each.

For EU inference, use an eligible EU-hosted route. Managed hosting still needs a clear processing arrangement, but the application team does not have to provision the model’s GPU infrastructure.

Include operating work in the comparison

Compare the same workload and reliability target on both options.

  • Capacity planning and idle resources.
  • Serving updates, model rollout and rollback.
  • Request limits, monitoring and incident response.
  • Required model quality and proprietary-model access.
  • Engineering time as well as usage charges.

A hybrid architecture can be deliberate

An application can retain a specialized self-hosted model while using an API for other tasks. Keep the routing decisions explicit and measure both paths using the same task outcomes.

Explore the TextCortex model API and routing guide to decide which workloads belong on each path.

Questions

Your next questions, answered.

Is TextCortex limited to open-source models?

No. The API provides access to proprietary model families such as GPT, Claude and Gemini alongside open-weight families such as Kimi, GLM, DeepSeek and MiMo. Use GET /models to list the identifiers available to your account.

Can I use an OpenAI-compatible client?

Yes. Configure the client with the TextCortex base URL and API key. Use a TextCortex model identifier and the parameters supported by that model. Model discovery, chat completions and responses are documented in the API reference.

How do I start using the API?

Sign up for TextCortex, create an API key in your account settings, and use https://api.textcortex.com/v1 as the base URL. Retrieve the model catalog, select a model identifier and send a chat-completion request.

TextCortex AI

One integration. Your choice of models.

Sign up for TextCortex, create an API key and start building with the models your application needs.

Sources and documentation

Product documentation and provider references used for this guide. Reviewed on 5 October 2026.