FLUX 2 Flash Text-to-Image

WaveSpeedAI FLUX.2 Flash Text-to-Image

FLUX.2 Flash Text-to-Image is a fast, production-focused image generation model designed for high-volume, low-latency workflows. It turns a single text prompt into a ready-to-use image, making it a strong default for rapid iteration, batch pipelines, and “generate lots of options quickly” use cases.

This wrapper is text-to-image (text in, image out). If you need prompt-based edits to existing images (image-to-image, inpainting/outpainting, background replacement, etc.), use the related FLUX.2 Flash Edit model instead.

Key capabilities

• Fast, low-latency image generation for rapid iteration and large-scale creative production.
• Prompt-faithful composition and styles that hold up well across repeated runs and automation pipelines.
• Crisp on-image text tuned for cleaner typography (helpful for posters, product shots, and social creatives).
• Flexible output sizing via size or explicit width/height for banners, posters, square assets, and more.
• Reproducible variations with seed for controlled exploration and reruns.
• API-friendly output controls like synchronous waiting (enable_sync_mode) and base64 responses (enable_base64_output) for easier server-side integration.

Parameters and how to use

• prompt: (required) The text instruction that describes what you want to generate.
• size: A shorthand output size string (commonly formatted like WIDTH*HEIGHT).
• seed: Randomness control for reproducibility (-1 for a new random result each run).
• enable_sync_mode: If true, wait for generation/upload and return the result directly (API only).
• enable_base64_output: If true, return base64 output instead of a URL (API only).

Prompt

Write your prompt like you’re briefing a photographer or designer:

• Start with the subject + setting, then add style, camera/lighting, and details that matter (materials, mood, composition).

• For marketing/product visuals, include: background type, surface/reflection, lighting direction, and “clean” constraints (e.g., “no extra objects, no watermark”).

• For on-image text, keep it short and explicit:

  • Put the exact text in quotes.
  • Specify placement and typography cues (e.g., “centered headline, bold sans-serif, high contrast”).
  • If you get typos, simplify the layout and reduce the amount of text.

Other parameters

• size Use when you want a quick preset-like size string. Across WaveSpeedAI FLUX endpoints, this is commonly written as WIDTH*HEIGHT (for example, 1024*1024). If you set width and height, keep them consistent with size to avoid ambiguity.

• width / height Use when you need exact dimensions (e.g., wide banners vs. tall posters).

• seed

  • Use -1 for a fresh random result each run.
  • Use a fixed integer (e.g., 12345) to reproduce a composition or generate controlled variations while you iterate on the prompt.

• enable_sync_mode (API only) Set to true when you want the call to wait and return the generated result in the same response (useful for simple backends and demos).

• enable_base64_output (API only) Set to true when you want the output encoded as base64 instead of a hosted URL (useful for storage, pipelines, or environments that can’t fetch URLs).

After you finish configuring the parameters, click Run, preview the result, and iterate if needed.

Pricing

$0.008 per run

Notes

• If you’re generating many variations, keep size (or width/height) and a fixed seed consistent while you tune the prompt—this makes changes easier to compare.

Related Models

• FLUX.2 Flash Edit – Prompt-based image editing (image-to-image) when you need to modify existing assets instead of generating from scratch.
• FLUX.2 Dev Text-to-Image – Leaner base model in the FLUX.2 family for fast iteration and training-friendly workflows.
• FLUX.2 Flex Text-to-Image – More style-forward generation when you want broader aesthetics while staying fast.
• FLUX.2 Pro Text-to-Image – Higher-capacity option for more demanding production visuals and higher fidelity outputs.