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European LLM inference providers: an API buyer’s guide

Compare European LLM inference providers and model routers by catalog, API compatibility, hosting and cost. See where TextCortex fits.

European LLM inference providers: an API buyer’s guide

The practical takeaway

Build on a multi-model API.

Choose the API around your required models and processing routes. TextCortex combines proprietary and open-weight model access with an OpenAI-compatible interface and EU-hosted options.

Start with the API your product needs

A model-serving provider, a GPU cloud and a model router solve related problems at different layers. Write down whether you need access to existing models, a custom deployment or control of the underlying compute.

If the product needs several model families, a common API can reduce integration work. If it depends on custom weights or a dedicated serving setup, keep those requirements explicit in the comparison.

Build a shortlist around concrete requirements

TextCortex is a strong fit when one API should cover GPT, Claude, Gemini and open-weight families such as Kimi, GLM, DeepSeek and MiMo. Compare alternatives against the same model list.

Treat EU hosting as a route requirement

A provider’s business address is not enough to establish the processing location of a request. Record the selected model, deployment and processing arrangement for the workload.

A broad catalog can contain both EU-hosted and other routes. Establish the eligible EU model list first, then evaluate the response quality and cost of those candidates.

Compare requests, not slogans

Run a common request set with explicit acceptance criteria. Measure response validity, tool behavior, token usage, latency and failures. Keep model versions and generation settings in the results.

Start with the TextCortex API guide. The integration gives you one place to evaluate models, and the cost calculator helps estimate the resulting workload.

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.