Distilled version of Black Forest Labs' FLUX.2 [dev] outperforming it at a cheaper price. Developed by fal.ai.
Details
flux.2-dev-turbo
Providers & Pricing (1)
FLUX.2 [dev] Turbo is available exclusively through fal.ai, starting at $0.008/image.
fal/flux.2-dev-turbo
Provider Performance
Fastest generation through fal at 3,232ms median latency with 100.0% success rate.
Aggregated from real API requests over the last 30 days.
Generation Time
Success Rate
Time to First Byte
Provider Rankings
| # | Provider | p50 Gen Time | p95 Gen Time | Success Rate | TTFB (p50) |
|---|---|---|---|---|---|
| 1 | fal | 3,232ms | 8,957ms | 100.0% | 3,232ms |
FLUX.2 [dev] Turbo API OpenAI-compatible
Integrate text-to-image generation and complex image editing into any application using the Lumenfall OpenAI-compatible API to access FLUX.2 [dev] Turbo. This endpoint enables programmatic creation of high-fidelity visual media through a single unified integration point.
https://api.lumenfall.ai/openai/v1
flux.2-dev-turbo
Text to Image Generate
Create images from text descriptions
curl -X POST \
https://api.lumenfall.ai/openai/v1/images/generations \
-H "Authorization: Bearer $LUMENFALL_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "flux.2-dev-turbo",
"prompt": "A serene mountain landscape at sunset",
"size": "1024x1024"
}'
# Response:
# { "created": 1234567890, "data": [{ "url": "https://...", "revised_prompt": "..." }] }
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: 'flux.2-dev-turbo',
prompt: 'A serene mountain landscape at sunset',
size: '1024x1024'
});
// { created: 1234567890, data: [{ url: "https://...", revised_prompt: "..." }] }
console.log(response.data[0].url);
from openai import OpenAI
client = OpenAI(
api_key="YOUR_API_KEY",
base_url="https://api.lumenfall.ai/openai/v1"
)
response = client.images.generate(
model="flux.2-dev-turbo",
prompt="A serene mountain landscape at sunset",
size="1024x1024"
)
# { created: 1234567890, data: [{ url: "https://...", revised_prompt: "..." }] }
print(response.data[0].url)
Image Editing Edit
Transform existing images with text instructions
curl -X POST \
https://api.lumenfall.ai/openai/v1/images/edits \
-H "Authorization: Bearer $LUMENFALL_API_KEY" \
-F "model=flux.2-dev-turbo" \
-F "[email protected]" \
-F "prompt=Add a starry night sky to this image" \
-F "size=1024x1024"
# Response:
# { "created": 1234567890, "data": [{ "url": "https://...", "revised_prompt": "..." }] }
import OpenAI from 'openai';
import fs from 'fs';
const client = new OpenAI({
apiKey: 'YOUR_API_KEY',
baseURL: 'https://api.lumenfall.ai/openai/v1'
});
const response = await client.images.edit({
model: 'flux.2-dev-turbo',
image: fs.createReadStream('source.png'),
prompt: 'Add a starry night sky to this image',
size: '1024x1024'
});
// { created: 1234567890, data: [{ url: "https://...", revised_prompt: "..." }] }
console.log(response.data[0].url);
from openai import OpenAI
client = OpenAI(
api_key="YOUR_API_KEY",
base_url="https://api.lumenfall.ai/openai/v1"
)
response = client.images.edit(
model="flux.2-dev-turbo",
image=open("source.png", "rb"),
prompt="Add a starry night sky to this image",
size="1024x1024"
)
# { created: 1234567890, data: [{ url: "https://...", revised_prompt: "..." }] }
print(response.data[0].url)
Benchmarks
FLUX.2 [dev] Turbo holds the fourth position globally in text-to-image generation with an Elo rating of 1272. This distilled model by fal.ai consistently outperforms the original FLUX.2 [dev] across speed and quality metrics in competitive human-preference environments.
Competition Results
Intricate Floral Mandala
Text-to-Image“Perfectly symmetrical mandala made entirely of real flowers, petals, leaves, fruits, and seeds in vibrant natural colors, intricate layered patterns with radial symmetry, top-down view on a soft neutral background, hyper-detailed organic textures and subtle shadows, photorealistic, 8K masterpiece.”
Geometric Composition
Text-to-Image“A glass cube on a wooden table. Inside the cube is a small blue sphere. On top of the cube sits a red book. A green plant is behind the cube, partially visible through the glass. Soft window light from the left.”
Isometric Miniature Diorama Scenes
Text-to-Image“Create a clear, 45° top-down isometric miniature 3D cartoon scene of Japan's signature dish: sushi, with soft refined textures, realistic PBR materials, gentle lighting, on a small raised diorama base with minimal garnish and plate. Solid light blue background. At top-center: 'JAPAN' in large bold text, 'SUSHI' below it, small flag icon. Perfectly centered, ultra-clean, high-clarity, square format.”
Apollo 11: Journey to Tranquility
Text-to-Image“Create a clean, modern vector infographic poster about the Apollo 11 mission. NASA-inspired palette (navy, white, muted red, light gray). Flat-vector style, crisp lines, consistent iconography, subtle gradients only. Steps (stop at landing): 1. Launch (Saturn Vicon) 2. Earth Orbit (Earth + orbit ring icon) 3. Translunar (trajectory arc icon) 4. Lunar Orbit (Moon + orbit ring icon) 5. Descent (lunar module descending icon) 6. Landing (lunar module on the surface icon) Small supporting elements (minimal text): • Crew strip: three silhouette icons with only last names: Armstrong, Aldrin, Collins. • Landing site marker: Moon pin labeled "Tranquility" only. Layout constraints: generous margins, large readable labels, clean background with subtle stars. Vector-only, print-poster look, high resolution.”
Victorian Greenhouse Oasis
Text-to-Image“Hyper-photorealistic interior of a lush Victorian glass greenhouse filled with exotic tropical plants, vibrant blooming orchids, tall ferns, colorful butterflies in flight, sunlight filtering through ornate glass roof creating realistic caustics and dew on leaves, intricate iron framework visible, misty atmosphere, 8K masterpiece.”
Fantasy Warrior
Text-to-Image“Close portrait of a battle-worn paladin in ornate engraved plate armor, hair braided with small beads, faint scars and dirt on the skin, warm torchlight reflecting off metal, shallow depth of field, bokeh sparks, lifelike eyes, highly detailed texture on leather straps and cloth underlayer.”
Vintage Cafe Logo
Text-to-Image“Vintage minimalist restaurant logo for "Caffè Florian", retro cloche dome with steam and "Est. 1720" banner, classic typography, warm brown and cream tones, subtle texture on light background, vector emblem style.”
Adorable Baby Animals in Sunny Meadow
Text-to-Image“Hyper-photorealistic scene of fluffy baby animals—a golden retriever puppy, tabby kitten, baby bunny, and red fox kit—with big expressive eyes and ultra-detailed soft fur, playfully chasing butterflies and tumbling together in a lush wildflower meadow, warm golden sunrise light with god rays and dew sparkles, joyful wholesome vibe, 8K masterpiece.”
Modern Clean Menu
Text-to-Image“Modern minimalist restaurant menu design, white background with colorful food photos in grid, sections for appetizers/pizza/mains, bold sans-serif fonts, vibrant accents, clean professional layout for casual dining.”
Heroic Super Hero Portrait
Text-to-Image“Hyper-photorealistic full-body portrait of a female superhero standing triumphantly on a New York skyscraper rooftop at golden sunset, wearing a classic modest superhero costume with flowing cape, chest emblem, gloves, and boots in red and blue colors, practical design, short hair, strong determined heroic expression looking into the distance, powerful confident stance with hands on hips and cape billowing dramatically in the wind, detailed urban cityscape background, warm natural sunlight with sharp shadows and fabric highlights, ultra-sharp textures on suit, hair, and concrete, 8K masterpiece, empowering family-friendly style.”
Candid Street Photography
Text-to-Image“A candid street photo of an elderly Japanese man repairing a red bicycle in light rain, reflections on wet pavement, shallow depth of field, 50mm lens, natural skin texture, imperfect framing, motion blur from passing cars, cinematic but realistic, no stylization.”
Fantasy Warrior
Text-to-Image“Close portrait of a battle-worn paladin in ornate engraved plate armor, hair braided with small beads, faint scars and dirt on the skin, warm torchlight reflecting off metal, shallow depth of field, bokeh sparks, lifelike eyes, highly detailed texture on leather straps and cloth underlayer.”
Best for
All categoriesGallery
View all 16 imagesFLUX.2 [dev] Turbo FAQ
FLUX.2 [dev] Turbo starts at $0.008 per image through Lumenfall. Pricing varies by provider. Lumenfall does not add any markup to provider pricing.
You can use FLUX.2 [dev] Turbo through Lumenfall's OpenAI-compatible API. Send requests to the unified endpoint with model ID "flux.2-dev-turbo". Code examples are available in Python, JavaScript, and cURL.
FLUX.2 [dev] Turbo is available through fal.ai on Lumenfall. Lumenfall automatically routes requests to the best available provider.
FLUX.2 [dev] Turbo supports images up to 2048x2048 resolution.
Overview
FLUX.2 [dev] Turbo is an accelerated image generation model developed by fal.ai, designed to provide high-fidelity outputs with significantly lower latency than the base FLUX.2 [dev] model. It uses architectural distillation to achieve high performance at a lower cost, maintaining the composition and detail of the original Black Forest Labs weights while requiring fewer sampling steps. This open-weights model is released under a non-commercial license and is optimized for workflows where generation speed and cost-efficiency are prioritized over maximum sampling depth.
Strengths
- Generation Velocity: Significant reduction in inference time compared to the standard FLUX.2 [dev], capable of producing high-resolution images in a fraction of the steps.
- Anatomical and Text Fidelity: Retains the core architectural strengths of the FLUX family, specifically in rendering legible text and accurate human anatomy (such as hands and limbs).
- Instruction Following: High responsiveness to complex, multi-subject prompts involving specific spatial arrangements or lighting conditions.
- Operational Efficiency: Lower compute requirements and a reduced price point ($0.008 starting price) make it suitable for high-volume prototyping or iterative design processes.
Limitations
- Non-Commercial License: The model is restricted to research and personal use; it cannot be integrated into commercial products or used for profit-generating workflows.
- Detail Ceiling: Due to the distillation process, it may occasionally lack the extreme fine-grain texture or subtle lighting nuances found in the full FLUX.2 [dev] model during multi-step high-CFG generations.
- Reduced Flexibility: This turbo variant is specifically tuned for a lower step count, which may make it less responsive to manual sampling adjustments compared to its non-distilled counterpart.
Technical Background
FLUX.2 [dev] Turbo is part of the FLUX.2 family, utilizing a distilled version of the original diffusion transformer (DiT) architecture. By applying adversarial or sequence-level distillation techniques, fal.ai optimized the original Black Forest Labs weights to converge in fewer iterations without sacrificing the structural integrity of the generated output. The model accepts both text and image inputs, allowing for versatile image-to-image and text-to-image workflows.
Best For
- Iterative Design: Rapidly testing different prompt variations or character concepts without the wait times associated with standard diffusion models.
- Prototyping: Building proof-of-concept creative tools where speed-of-feedback is critical for user experience.
- Research and Personal Projects: High-quality image generation for non-commercial academic research or hobbyist exploration.
FLUX.2 [dev] Turbo is available through Lumenfall’s unified API and playground, allowing developers to integrate fast, state-of-the-art image generation into their research environments with minimal configuration.
Top Matchups
See how FLUX.2 [dev] Turbo performs head-to-head against other AI image models, ranked by community votes in blind comparisons.
vs ImagineArt 1.5 (Preview)
Geometric Composition
50% W · 0% L · 50% T
vs Lucid Origin
Fantasy Warrior
100% W · 0% L
vs Stable Diffusion 3.5 Large
Apollo 11: Journey to Tranquility
100% W · 0% L
vs Nano Banana Pro
Isometric Miniature Diorama Scenes
0% W · 100% L
vs Grok Imagine Image
Modern Clean Menu
0% W · 100% L
Try FLUX.2 [dev] Turbo in Playground
Generate images with custom prompts — no API key needed.