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

# Providers

> An overview of supported AI providers and how Coreply connects to them.

Coreply connects to any OpenAI-compatible inference API. That means you can use hosted providers like Google AI Studio, Groq, or OpenAI, as well as any self-hosted endpoint that follows the OpenAI API format.

## What you need

To connect Coreply to a provider, you need three things:

* **API URL** — the base endpoint for the provider's inference API
* **API Key** — your authentication credential from the provider
* **Model Name** — the identifier of the model you want to use

Each provider page below shows you exactly where to find these values.

## Choosing a model

Model size has a meaningful impact on output quality with Coreply. Smaller models under 7 billion parameters often struggle to follow Coreply's output format, which can result in poor or unusable suggestions. Models at 7B parameters and above generally work well.

Reasoning models — such as GPT-5, Gemini 2.5, and Claude 3.7 and above — are technically compatible, but they introduce extra latency before each suggestion appears. For a real-time texting experience, non-reasoning models are a better fit. Some providers like OpenRouter disable reasoning by default, which can make these models usable.

## Supported model families

The following model families have been tested and confirmed to work with Coreply's prompt format:

| Model                | Supported |
| -------------------- | --------- |
| Claude 3 & 4 Family  | ✅         |
| Llama 3 & 4 Family   | ✅         |
| Gemma 2 & 3 Family   | ✅         |
| OpenAI GPT Family    | ✅         |
| Google Gemini Family | ✅         |

Many other models should also work. You're welcome to experiment with models not listed here.

## Provider setup guides

<CardGroup cols={2}>
  <Card title="Google AI Studio" icon="google" href="/providers/google-ai-studio">
    Use Gemini models via the free AI Studio API.
  </Card>

  <Card title="Groq" icon="bolt" href="/providers/groq">
    Fast inference on open-source models with a free tier.
  </Card>

  <Card title="OpenRouter" icon="route" href="/providers/openrouter">
    Access hundreds of models from a single API key.
  </Card>

  <Card title="OpenAI" icon="microchip" href="/providers/openai">
    Use GPT-4.1 and GPT-4o models directly from OpenAI.
  </Card>

  <Card title="Mistral" icon="wind" href="/providers/mistral">
    Use Mistral models, including FIM mode with Codestral.
  </Card>

  <Card title="Custom provider" icon="server" href="/providers/overview">
    Any OpenAI-compatible endpoint works. Find the API URL, API Key, and Model Name in your provider's docs.
  </Card>
</CardGroup>