FLUX.1 Dev
FLUX.1 Dev is Black Forest Labs's language model with a 4K context window and up to 4K output tokens, starting at $0.1 / 1M input and $0.1 / 1M output. A 12B parameter rectified flow transformer from Black Forest Labs for text-to-image generation, released for research and development use.
| Specifications | |
|---|---|
black-forest-labs-flux-1-dev | |
| Language | |
| Active | |
| Black Forest Labs | |
| 4K tokens | |
| 4K tokens | |
| Text | |
| Text | |
| 11.9B | |
| 12,674 | |
| 681,490 | |
| 29,643,489 | |
| Benchmarks | |
|---|---|
| Elo Rating | 1026#246 |
Capabilities
Input1/5
Text✓
Image·
Audio·
Video·
PDF·
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·
Pricing by Provider
US Dollar ($)
Per 1M tokens
| Provider | Standard | |
|---|---|---|
| Input $ / 1M | Output $ / 1M | |
| $0.1 | $0.1 | |
Cost Calculator
US Dollar ($)
Preset:
Cheapest Instances to Run It
Cloud GPU instances that can host FLUX.1 Dev, ranked by cheapest on-demand price. The model needs about 29 GB of GPU memory at FP16 precision (estimated from its parameter count), so treat the fit as guidance rather than a guarantee.
All clouds
FP16 (full precision)
US Dollar ($)
Instance | Cloud | GPU | VRAM | Price | Cheapest region | |
|---|---|---|---|---|---|---|
| Standard_NV16as_v4 |  Azure | AMD Radeon Instinct MI25 | 32 GB | $0.932/hr | eastus | |
| Standard_NP10s | Azure | AMD Alveo U250 FPGA (64GB) | 64 GB | $1.65/hr | eastus | |
| g6e.xlarge |  AWS | L40S | 45 GB | $1.86/hr | us-east-1 | |
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| FLUX Klein 2 4B | — | — | — | Available | |
| FLUX Klein 2 9B | — | — | — | Available | |
| FLUX 2 Max | 67K | — | — | Available | |
| FLUX 2 Flex | — | — | — | Available | |
| FLUX 2 Dev | — | — | — | — | Available |
| FLUX 2 Dev Flash | — | — | — | — | Available |
| FLUX 2 Dev Turbo | — | — | — | — | Available |
| FLUX Klein 2 4B Base | — | — | — | — | Available |
| FLUX Klein 2 9B Base | — | — | — | — | Available |
| FLUX.1 Fill Pro | — | — | — | Available | |
| FLUX.1 Dev | — | 4K | $0.100 | $0.100 | Current |