# HiDream I1 Fast

> Distilled version of HiDream AI's 17B parameter text-to-image model

## Quick Reference

- Model ID: hidream-i1-fast
- Creator: HiDream AI
- Status: active
- Family: hidream
- Base URL: https://api.lumenfall.ai/openai/v1

## Specifications

- Input Modalities: text
- Output Modalities: image

## Model Identifiers

- Primary Slug: hidream-i1-fast

## Dates


## Tags

image-generation, text-to-image

## Available Providers

### Replicate

- Config Key: replicate/hidream-i1-fast
- Provider Model ID: prunaai/hidream-l1-fast
- Pricing:
  - notes: ["PrunaAI optimized version of HiDream L1", "~$0.014 per image (71 runs per $1)"]
  - source: official
  - currency: USD
  - components: [{"type" => "output", "metric" => "image", "unit_price" => 0.005}]
  - source_url: https://replicate.com/prunaai/hidream-l1-fast
  - effective_at: 2026-01-02

### fal.ai

- Config Key: fal/hidream-i1-fast
- Provider Model ID: fal-ai/hidream-i1-fast
- Pricing:
  - source: official
  - currency: USD
  - components: [{"type" => "output", "metric" => "megapixel", "unit_price" => 0.01}]
  - source_url: https://fal.ai/models/fal-ai/hidream-i1-fast
  - effective_at: 2026-01-02


## Arena Benchmarks

### Fantasy Warrior

- Elo: 1175
- Record: 7W / 25L / 2T (34 battles)
- Rank: #10 of 19

### Fantasy Warrior

- Elo: 1049
- Record: 1W / 5L / 0T (6 battles)
- Rank: #12 of 14

### Heroic Super Hero Portrait

- Elo: 997
- Record: 0W / 5L / 0T (5 battles)
- Rank: #19 of 19


## Use Cases & Category Performance

### Portrait (Text-to-Image)

- Rank: #16 of 19
- Elo: 1118
- Record: 7W / 25L / 2T (34 battles)
- Win Rate: 20.6%


## Image Gallery

5 images available for this model.
- Curated examples: 2
  - "A cinematic, wide-angle shot of a luxury boutique storefront at dusk. The shop’s large glass window is framed by dark..."
  - "A cozy street corner bakery with a large chalkboard sign that says "FRESH SOURDOUGH" in elegant hand-lettered cursive..."
- Competition results: 3
  - Fantasy Warrior: #10 of 19 (Elo 1175)
  - Fantasy Warrior: #12 of 14 (Elo 1049)
  - Heroic Super Hero Portrait: #19 of 19 (Elo 997)

## Example Prompt

The following prompt was used to generate an example image in our playground:

A cozy street corner bakery with a large chalkboard sign that says "FRESH SOURDOUGH" in elegant hand-lettered cursive. Golden afternoon sun hits the storefront. In the background, a capybara calmly waits in line behind a woman in a floral dress.

## Code Examples

### Text to Image (Generation)

#### cURL

curl -X POST \
  https://api.lumenfall.ai/openai/v1/images/generations \
  -H "Authorization: Bearer $LUMENFALL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "hidream-i1-fast",
    "prompt": "A serene mountain landscape at sunset",
    "size": "1024x1024"
  }'

# Response:
# { "created": 1234567890, "data": [{ "url": "https://...", "revised_prompt": "..." }] }

#### JavaScript

import OpenAI from 'openai';

const client = new OpenAI({
  apiKey: 'YOUR_API_KEY',
  baseURL: 'https://api.lumenfall.ai/openai/v1'
});

const response = await client.images.generate({
  model: 'hidream-i1-fast',
  prompt: 'A serene mountain landscape at sunset',
  size: '1024x1024'
});

// { created: 1234567890, data: [{ url: "https://...", revised_prompt: "..." }] }
console.log(response.data[0].url);

#### Python

from openai import OpenAI

client = OpenAI(
    api_key="YOUR_API_KEY",
    base_url="https://api.lumenfall.ai/openai/v1"
)

response = client.images.generate(
    model="hidream-i1-fast",
    prompt="A serene mountain landscape at sunset",
    size="1024x1024"
)

# { created: 1234567890, data: [{ url: "https://...", revised_prompt: "..." }] }
print(response.data[0].url)


## About

## Overview
HiDream I1 Fast is a distilled text-to-image model developed by HiDream AI, optimized for low-latency image generation. It is a high-speed variant of the company's flagship 17-billion parameter model, designed to retain the compositional intelligence of a large-scale architecture while significantly reducing inference costs and generation time.

## Strengths
*   **Low Latency Generation:** The distillation process allows the model to produce high-resolution images in a fraction of the time required by standard diffusion models.
*   **Multi-Subject Composition:** Leveraging its 17B-parameter lineage, the model excels at managing spatial relationships and interactions between multiple distinct objects within a single frame.
*   **Prompt Adherence:** It demonstrates high fidelity to descriptive text inputs, particularly when handling complex attributes such as lighting conditions, material textures, and specific artistic styles.
*   **Resource Efficiency:** Provides a high quality-to-cost ratio, making it suitable for applications that require massive batches of image generation at a starting price of $0.005 per output.

## Limitations
*   **Detail Nuance:** As a distilled model, it may lack some of the fine-grained textural detail and edge sharpness found in the full 17B parameter non-distilled version.
*   **Text Rendering:** Like many diffusion-based architectures, it may struggle with generating lengthy or highly specific typographic strings within the image.
*   **Photorealism Extremes:** While it handles stylized and general photographic content well, it may produce occasional artifacts in anatomy or complex environmental reflections compared to slower, specialized photorealistic models.

## Technical Background
HiDream I1 Fast is based on a transformer-heavy diffusion architecture, utilizing a massive 17-billion parameter backbone. The model employs knowledge distillation techniques to compress the computational requirements of the teacher model into a faster student model, prioritizing inference speed without sacrificing the fundamental semantic understanding acquired during large-scale pre-training.

## Best For
HiDream I1 Fast is an ideal choice for real-time creative tools, social media asset generation, and rapid prototyping where speed is as critical as aesthetic quality. It is also well-suited for high-volume workflows like generating game assets or marketing variations. You can access HiDream I1 Fast through Lumenfall’s unified API and interactive playground, allowing for easy integration into existing production pipelines.

## Frequently Asked Questions

### How much does HiDream I1 Fast cost?

HiDream I1 Fast starts at $0.005 per image through Lumenfall. Pricing varies by provider. Lumenfall does not add any markup to provider pricing.

### How do I use HiDream I1 Fast via API?

You can use HiDream I1 Fast through Lumenfall's OpenAI-compatible API. Send requests to the unified endpoint with model ID "hidream-i1-fast". Code examples are available in Python, JavaScript, and cURL.

### Which providers offer HiDream I1 Fast?

HiDream I1 Fast is available through Replicate and fal.ai on Lumenfall. Lumenfall automatically routes requests to the best available provider.

## Links

- Model Page: https://lumenfall.ai/models/hidream-ai/hidream-i1-fast
- About: https://lumenfall.ai/models/hidream-ai/hidream-i1-fast/about
- Providers, Pricing & Performance: https://lumenfall.ai/models/hidream-ai/hidream-i1-fast/providers
- API Reference: https://lumenfall.ai/models/hidream-ai/hidream-i1-fast/api
- Benchmarks: https://lumenfall.ai/models/hidream-ai/hidream-i1-fast/benchmarks
- Use Cases: https://lumenfall.ai/models/hidream-ai/hidream-i1-fast/use-cases
- Gallery: https://lumenfall.ai/models/hidream-ai/hidream-i1-fast/gallery
- Playground: https://lumenfall.ai/playground?model=hidream-i1-fast
- API Documentation: https://docs.lumenfall.ai