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blackforestlabs/flux-2/dev/text-to-image

Generate and refine high-fidelity images from text or multiple references with precise color control, photo-realistic detail, and consistent typography for professional design and branding tasks.

Guidance Scale is a measure of how close you want the model to stick to your prompt when looking for a related image to show you.
The number of inference steps to perform.
The size of the image to generate. For custom size, specify width and height between 512 and 2048 pixels.
The number of images to generate.
If set to true, the prompt will be expanded for better results.
The format of the generated image.

Introduction to Flux 2 Dev Image Generator

Flux 2 Dev is an open-weight text-to-image generation model from Black Forest Labs that builds upon the success of the FLUX.2 series. Designed with 32 billion parameters as a rectified flow transformer, it brings enhanced realism, structured prompt understanding, and multi-reference precision. Unlike earlier versions, Flux 2 Dev enables you to combine up to ten images for consistent rendering, manage HEX-based color palettes, and edit existing visuals at resolutions up to around four megapixels. It’s purpose-built for artists, designers, and developers who need accurate typography, style coherence, and efficient editing workflows powered by open-weight flexibility. Flux 2 Dev text-to-image empowers you to generate, retouch, and refine visuals with remarkable realism and control. This generation tool is for creatives, marketers, and studios seeking photorealistic results, stable branding, and exact visual consistency. Use Flux 2 Dev text-to-image to bring your concepts to life faster with professional-grade fidelity.

Examples Created with Flux 2 Dev

Flux 2 Dev on X: Updates and Insights

What makes Flux 2 Dev stand out

Flux 2 Dev is a high-fidelity text-to-image model built for structured, realistic synthesis with tight control over palette and typography. Flux 2 Dev preserves layout and material response while turning concise prompts into production-ready visuals. With multi-reference conditioning, Flux 2 Dev keeps brand colors, logos, and composition consistent across variations. Through efficient sampling, adjustable guidance, and deterministic seeding, Flux 2 Dev delivers repeatable results at practical speeds. Flexible aspect ratios make Flux 2 Dev fit common creative and marketing workflows. Key capabilities:

  • Structure-preserving synthesis: keeps pose, perspective, depth, and object relations.
  • Photoreal detail: crisp textures, clean edges, realistic lighting and reflections.
  • Color-accurate output: precise palette control and consistent, brand-safe typography.
  • Multi-reference guidance: blend palette, materials, and layout motifs without drift.
  • Tunable controls in Flux 2 Dev: guidance_scale and num_inference_steps balance speed and fidelity; seed ensures reproducibility.
  • Scalable generation in Flux 2 Dev: image_size presets, custom sizes to 2048 px, and acceleration modes for throughput.

Prompting guide for Flux 2 Dev

Start with a clear prompt that specifies subject, scene, lighting, palette, camera, and any typography. In Flux 2 Dev, anchor elements with spatial terms and state what must not change to prevent drift. For branding, include color values, font style, and exact text strings. Control adherence with guidance_scale, adjust realism and time with num_inference_steps, and fix repeatability with a seed. Choose an image_size preset or custom dimensions, set output_format for your pipeline, and use acceleration to iterate faster. Prompt expansion can broaden sparse descriptions. Flux 2 Dev favors focused direction, and Flux 2 Dev will preserve composition when constraints are explicit.

  • Product hero: For Flux 2 Dev, 'ceramic mug on matte slate, soft window light, 35mm, neutral gray, ARCADIA in white sans serif' (guidance_scale 3, steps 28).
  • Localized change: 'keep subject and pose; replace background with foggy pine forest; cool teal grade; no text changes.'
  • Brand consistency: In Flux 2 Dev, 'use Pantone 186 C accents, keep logo proportions, same camera angle across 3 variations' (num_images 3, seed 1234).
  • Typography: 'storefront sign reads LUCID, bold geometric sans, perspective-matched; avoid serif fonts.'
  • Campaign key art: In Flux 2 Dev, 'sunrise skyline, warm gold, subtle lens flare, space for headline top-left' (landscape_16_9, png).
  • Be explicit about constraints and scope; use 'background only' and spatial terms.
  • Use concise descriptors and consistent style cues; avoid conflicts.
  • In Flux 2 Dev, set guidance_scale 2.0-4.0; add steps for complex materials or text.
  • Lock a seed; change one parameter per iteration.
  • Enable the safety checker; use sync_mode for direct data URIs.

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Frequently Asked Questions

What is Flux 2 Dev and what does its text-to-image capability do?

Flux 2 Dev is an open-weight generative model created by Black Forest Labs that specializes in advanced text-to-image generation and image editing. It allows users to create new images directly from text prompts or modify existing ones while maintaining realism and stylistic consistency.

How does Flux 2 Dev improve on earlier versions for text-to-image generation?

Compared to older models like FLUX.1 Dev, Flux 2 Dev offers major improvements in text-to-image realism, better handling of multiple image references, sharper detail, and more accurate text rendering. It also supports up to 10 reference images and outputs up to about 4 megapixels.

Is Flux 2 Dev free, and how does its credit system work for text-to-image generation?

Flux 2 Dev offers free trial credits for new users via the Runcomfy AI playground. After that, additional text-to-image generations require credits, which can be purchased or earned depending on the platform’s credit policy.

Who can benefit most from using Flux 2 Dev for text-to-image tasks?

Flux 2 Dev is ideal for artists, designers, marketers, and studios needing consistent visual branding, realistic mockups, or creative image generation. Its text-to-image capability is especially valuable for those in design, advertising, and digital art who require control over color, layout, and references.

What kind of image quality can I expect from Flux 2 Dev’s text-to-image outputs?

Users can expect highly photorealistic results from Flux 2 Dev’s text-to-image engine, characterized by precise lighting, textures, and readable text. The model’s 32-billion-parameter architecture ensures fidelity and quality across a wide range of creative scenarios.

Does Flux 2 Dev support both text-to-image and image editing workflows?

Yes, Flux 2 Dev supports dual workflows—text-to-image generation from detailed prompts and direct image editing where you can modify existing images with precise control while preserving key elements.

Where can I access Flux 2 Dev for text-to-image generation?

Flux 2 Dev can be accessed through the Runcomfy AI playground via web or mobile browsers. After logging in, users can use their credits to generate text-to-image results or perform image editing tasks directly online.

Are there any limitations to Flux 2 Dev’s text-to-image tool?

While Flux 2 Dev delivers strong performance, it currently supports images up to around 4 megapixels, and commercial usage may require a separate license. Additionally, text-to-image rendering quality depends on prompt clarity and available compute credits.

Can I use Flux 2 Dev locally for my own text-to-image experiments?

Yes, because Flux 2 Dev is an open-weight model, it can be used locally for research or non-commercial text-to-image experimentation. Developers and researchers can integrate it into custom workflows or applications.