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TextCortex API guides

Access frontier AI models through one European API

Use TextCortex API access for proprietary and open-weight frontier models. Explore EU-hosted Kimi K3, GLM-5.3, DeepSeek and MiMo endpoints.

Access frontier AI models through one European API

The practical takeaway

Build on a multi-model API.

Keep one model integration while your application adopts new model families and versions. Select the deployment that fits each workload, including EU-hosted inference where required.

Use a catalog that spans model families

Frontier model access is not limited to a single licensing or distribution model. TextCortex connects your application to GPT, Claude and Gemini alongside Kimi, GLM, DeepSeek, MiMo and other supported families.

Retrieve available identifiers from GET /models and select the version you intend to use. Keep availability and capability checks in the release process as the catalog evolves.

Select European deployments for European requirements

Use the EU-hosted route for a workload that requires regional inference. Keep that choice explicit when evaluating a newer version or introducing a second model.

Explore the EU model pages for the dedicated Kimi K3, GLM-5.3, DeepSeek and MiMo integrations. Other catalog routes can have different processing arrangements.

Upgrade a model without redesigning the client

Use a common TextCortex API client with the model identifier stored in configuration. Introduce a candidate model in a controlled evaluation while the existing route remains available.

Compare the outputs and request capabilities your application actually depends on. A newer version can change costs, latency or generation behavior even when the API shape stays familiar.

Build the first request, then the evaluation

Start with the OpenAI-compatible quickstart and a TextCortex API key. Add task-specific instructions and output validation once the basic connection works.

Use the model selection guide to compare candidates and the production rollout guide to introduce the selected model.

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.