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FLUX.1 Dev


FLUX.1 Dev is Black Forest Labs logoBlack Forest Labs's language model with a 4K context window and up to 4K output tokens, starting at $0.100 / 1M input and $0.100 / 1M output. A 12-billion-parameter rectified flow transformer for text-to-image generation, released as a development-use model by Black Forest Labs.
Spec
Canonical IDblack-forest-labs-flux-1-dev
TypeLanguage
StatusActive
CreatorBlack Forest LabsBlack Forest Labs
Providers
Context Window4K tokens
Max Output4K tokens
Input ModalitiesText
Output ModalitiesText
Elo Rating
1036
#172

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Pricing by Provider

ProviderStandard
Input
$ / 1M
Output
$ / 1M
Fireworks AI logo
Fireworks AI
accounts/fireworks/models/flux-1-dev
$0.100$0.100

Cost Calculator

Preset:
Compares every provider & tier in USD

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Deep Research Pro Preview (Dec-12-2025)1.0MAvailable
Deep Research Pro Preview (Dec-12-2025)1.0M$2.00$12.00Available
Imagen 4 Fast480$0.000$0.000Available
Imagen 4 Ultra480$0.000$0.000Available
Imagen 4480$0.000$0.000Available
Gen-4 Image Turbo$0.000$0.000Available
Imagen 4 Preview 0606$0.000$0.000Available
Runway Gen-4 Image$0.000$0.000Available
Stable Diffusion 3.5 Large77$0.000$0.000Available
Stable Diffusion 3.5 Large Turbo$0.000$0.000Available
FLUX.1 Dev4K$0.100$0.100Current

Model IDs