# Flux models on GPTProto

> One GPTProto API key covers every model listed below. Text models share an OpenAI-compatible API — swap the `model` id. Image / video / audio models use a submit-and-poll API; follow each model's own llms.txt.

## Overview

- **Models**: 2
- **Vendor**: Flux
- **Base URL**: `https://gptproto.com/v1`
- **Provider page**: https://gptproto.com/model/flux

## Authentication

Every request needs a GPTProto API key in the `Authorization` header. Create one at https://gptproto.com/dashboard/api-key, then export it:

```bash
export GPTPROTO_API_KEY="your-api-key"
```

Header: `Authorization: Bearer $GPTPROTO_API_KEY`. Use `base_url` `https://gptproto.com/v1` with any OpenAI-compatible SDK.

## Image, video, and audio models

These models use a submit-and-poll API (not OpenAI Chat Completions). Read the per-model guide for the exact endpoint, parameters, and example request.

| Model ID | Name | Type | Price | Guide |
| --- | --- | --- | --- | --- |
| `flux-kontext-max` | Flux Kontext Max | image | $0.064 / run | [llms.txt](https://gptproto.com/model/flux/flux-kontext-max/llms.txt) |
| `flux-kontext-pro` | Flux Kontext Pro | image | $0.032 / run | [llms.txt](https://gptproto.com/model/flux/flux-kontext-pro/llms.txt) |

## Additional resources

- [Provider page](https://gptproto.com/model/flux)
- [All models](https://gptproto.com/model)
- [API keys](https://gptproto.com/dashboard/api-key)
- [Platform overview for LLMs](https://gptproto.com/llm-full.txt)
- Per-model guide: `https://gptproto.com/model/{vendor}/{model}/llms.txt`