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

# LLM Models Overview

> Supported language models and compatible API endpoints

Unifically provides access to leading language models from **Cursor**, **OpenAI**, **Anthropic**, and **Moonshot AI** through three compatible API formats. Every model listed below supports all three endpoints.

## Supported Endpoints

| Endpoint                    | Format                  | Documentation                                              |
| --------------------------- | ----------------------- | ---------------------------------------------------------- |
| `POST /v1/chat/completions` | OpenAI Chat Completions | [Chat Completions API](/api-reference/v1-chat-completions) |
| `POST /v1/responses`        | OpenAI Responses        | [Responses API](/api-reference/v1-responses)               |
| `POST /v1/messages`         | Anthropic Messages      | [Messages API](/api-reference/v1-messages)                 |

<Info>
  Use whichever API format fits your existing codebase. All three endpoints accept the same model IDs and return provider-compatible response formats.
</Info>

## Available Models

| Model                         | Provider    | Name              |
| ----------------------------- | ----------- | ----------------- |
| `cursor/composer-2.5`         | Cursor      | Composer 2.5      |
| `cursor/composer-2.5-fast`    | Cursor      | Composer 2.5 Fast |
| `openai/gpt-5.4-mini`         | OpenAI      | GPT 5.4 Mini      |
| `openai/gpt-5.4-nano`         | OpenAI      | GPT 5.4 Nano      |
| `openai/gpt-5.4`              | OpenAI      | GPT 5.4           |
| `openai/gpt-5.5`              | OpenAI      | GPT 5.5           |
| `openai/gpt-5.6-luna`         | OpenAI      | GPT 5.6 Luna      |
| `openai/gpt-5.6-terra`        | OpenAI      | GPT 5.6 Terra     |
| `openai/gpt-5.6-sol`          | OpenAI      | GPT 5.6 Sol       |
| `anthropic/claude-fable-5`    | Anthropic   | Claude Fable 5    |
| `anthropic/claude-opus-5`     | Anthropic   | Claude Opus 5     |
| `anthropic/claude-haiku-4-5`  | Anthropic   | Claude Haiku 4.5  |
| `anthropic/claude-opus-4-5`   | Anthropic   | Claude Opus 4.5   |
| `anthropic/claude-sonnet-4-5` | Anthropic   | Claude Sonnet 4.5 |
| `anthropic/claude-sonnet-5`   | Anthropic   | Claude Sonnet 5   |
| `anthropic/claude-sonnet-4-6` | Anthropic   | Claude Sonnet 4.6 |
| `anthropic/claude-opus-4-6`   | Anthropic   | Claude Opus 4.6   |
| `anthropic/claude-opus-4-7`   | Anthropic   | Claude Opus 4.7   |
| `anthropic/claude-opus-4-8`   | Anthropic   | Claude Opus 4.8   |
| `moonshotai/kimi-k3`          | Moonshot AI | Kimi K3           |

## Quick Start

```bash theme={null}
curl -X POST https://api.unifically.com/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "anthropic/claude-sonnet-4-6",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'
```

## Authentication

All LLM endpoints use the same Bearer token authentication as the rest of the Unifically API. See [Authentication](/api-reference/authentication) for details.