FLUX.2 [dev]: AI Image Editor Online
Bottom line
FLUX.2 [dev] is Black Forest Labs' budget Flux 2 editor on VdoBloom: up to 4 reference photos and a prompt, a 1024x1024 result, 4 credits per image, Moderate content filter. Open the Image Edit tool, select FLUX.2 [dev], upload your image, and the exact credit cost appears before the edit runs.
![Example output generated with FLUX.2 [dev]](/models-media/flux2-dev.jpg)
Is FLUX.2 [dev] censored? On VdoBloom it sits in the Moderate content tier, the platform's default, between the Flexible Qwen models and the Strict Nano Banana and GPT Image models. VdoBloom checks every prompt for nudity before an edit runs, and edits blocked by the provider are refunded.
FLUX.2 [dev] is the entry tier of Black Forest Labs' FLUX.2 line, run on Runware (runware:400@1). In VdoBloom's Image Edit tool you upload one to four reference photos and describe what to make or change. Unlike FLUX Erase and FLUX Outpainting, it reads your prompt normally. Each image costs 4 credits, about $0.26 at the Lite one-time rate and the lowest price of any Flux model on VdoBloom. The 10 free signup credits cover two runs.
The trade-off is control. Output is always 1024x1024, square, with no ratio or resolution menu. Flux 2 Pro I2I adds eight photos, a ratio menu and 1K/2K output for 12 credits.
FLUX.2 [dev] specs at a glance
These values come from VdoBloom's Runware service for FLUX.2 [dev], the image-edit endpoint and the credit table. VdoBloom calls the model at a fixed 1024x1024, with 20 steps and guidance (CFG) 4.0.
| Spec | FLUX.2 [dev] on VdoBloom |
|---|---|
| Price | 4 credits per image (credit key flux2-dev) |
| Input photos | 1 to 4 reference photos; extra photos beyond 4 are rejected |
| Prompt | Required and used (a standard text-guided editor) |
| Output size | 1024x1024 (square), every run |
| Aspect-ratio / resolution menu | None |
| Sampling | 20 steps, CFG 4.0 (fixed) |
| Mask editing | Not supported |
| Runs on | Runware (runware:400@1) |
| Content filter | Moderate (VdoBloom's default tier) |
| Where to use it | Image Edit tool: /ai-photo-editor/?model=flux2-dev |
Is FLUX.2 [dev] censored on VdoBloom?
FLUX.2 [dev] carries VdoBloom's Moderate badge. VdoBloom has three content tiers: Flexible (the Qwen, Seedream and WAN image models), Moderate, and Strict (Nano Banana and GPT Image). Moderate is the default for models without a permissive track record.
Two checks apply to every edit. First, VdoBloom's own prompt check for nudity runs before the job is sent. Second, if the provider's moderation rejects the image, the job fails and the credits are refunded with a message saying the edit was blocked. VdoBloom does not offer explicit output on any model, and this page does not promise it.
What FLUX.2 [dev] costs
Every run costs 4 credits, whether you attach one reference photo or four. The cost is shown before you confirm, and failed jobs are refunded automatically. Dollar figures use the Lite one-time pack: 300 credits for $19.50, about 6.5 cents a credit, and those credits never expire.
| Job | Credits | About (Lite one-time) |
|---|---|---|
| 1 image | 4 | $0.26 |
| 5 drafts of one idea | 20 | $1.30 |
| 5 drafts on FLUX.2 [dev] + 1 final on Flux 2 Pro I2I | 32 | $2.08 |
| Images per 300-credit Lite pack | 75 | $19.50 for the pack |
| Images on the 10 free signup credits | 2 (2 credits left) | Free |
FLUX.2 [dev] vs the other Flux editors
VdoBloom runs five Flux editing models. Three of them read your prompt (FLUX.2 [dev], Flux 2 Pro I2I, Flux Kontext). FLUX Erase works from a painted mask. FLUX Outpainting ignores the prompt and uses only its pixel sliders.
| FLUX.2 [dev] | Flux 2 Pro I2I | Flux Kontext Pro | Flux Kontext Max | |
|---|---|---|---|---|
| Credits | 4 | 12 | 7 | 10 |
| Reference photos | Up to 4 | Up to 8 | Exactly 1 | Exactly 1 |
| Output size | 1024x1024 fixed | 1K / 2K | Set by the ratio you pick | Set by the ratio you pick |
| Aspect ratios | Square only | 7 plus auto | 6 (21:9 to 9:16) | 6 (21:9 to 9:16) |
| Prompt limit | Not listed | 5,000 chars | 3,000 chars | 3,000 chars |
| Content filter | Moderate | Moderate | Moderate | Moderate |
| Picker rating | 3.9 | 4.1 | 4.3 | 4.5 |
Read more: Flux 2 Pro I2I · Flux Kontext Pro · FLUX Erase
When to use FLUX.2 [dev]
These rules use only price and the limits above.
- Use FLUX.2 [dev] when a square 1024x1024 result is fine and you want the lowest Flux price (4 credits).
- Use it to test prompt wording on two to four reference photos before paying 12 credits for Flux 2 Pro I2I.
- Move to Flux 2 Pro I2I when you need a non-square frame, 2K output or more than four photos.
- Move to Flux Kontext Pro (7) or Max (10) for a precise instruction edit on one photo in a chosen ratio.
- Use FLUX Erase to remove an object, and FLUX Outpainting to extend the canvas. FLUX.2 [dev] does neither.
Prompting FLUX.2 [dev]
FLUX.2 [dev] combines your prompt with up to four reference photos, so tell it how to use each one.
- Say what each photo contributes: 'Use the person from image 1, the jacket from image 2, and the street from image 3.'
- Frame for a square. Every output is 1024x1024, so centre the subject and describe a composition that suits 1:1.
- Name the change and what to keep: 'Keep the face and pose; change the background to a sunlit studio.'
- Treat runs as drafts. At 4 credits, try two or three wordings, then rerun the best one on a Pro model if you need a larger or non-square final.
Common problems and fixes
These follow from how VdoBloom calls FLUX.2 [dev]: a fixed square size, a four-photo cap and the content checks described above. A failed edit is refunded automatically.
| What you see | Cause | Fix |
|---|---|---|
| A landscape photo came back square | Output is fixed at 1024x1024 | Use Flux 2 Pro I2I with 'auto' or a chosen ratio (12 credits) |
| 'Maximum 4 images allowed' | A fifth reference photo | Keep the four that carry subject, outfit, setting and style |
| Details from one photo were ignored | The prompt did not say what each photo is for | Assign each photo a role in the prompt |
| 'The provider's content moderation blocked this edit' | Provider-side safety check | Credits are refunded; adjust the prompt or photo |
| 'This type of content is not allowed' | VdoBloom's own prompt check | Rephrase the request within platform rules |
| You wanted text-only generation | FLUX.2 [dev] is listed in Image Edit, which needs a photo | Pick a model in the Text to Image tool |
Pick a model by job
If you are choosing among VdoBloom's editors rather than committed to FLUX.2 [dev], this table uses only price and code-level limits.
| Job | Model | Credits |
|---|---|---|
| Cheapest Flux run, square output is fine | FLUX.2 [dev] | 4 |
| Multi-photo guided edit in a chosen ratio or 2K | Flux 2 Pro I2I | 12 |
| Precise instruction edit on one photo | Flux Kontext Pro / Max | 7 / 10 |
| Remove an object | FLUX Erase | 10 |
| Extend the canvas | FLUX Outpainting | 12 |
| Cheapest multi-photo edit overall | Qwen Image 2.1 Edit (1K) | 3 |
Limits and weak cases
Output is always square at 1024x1024. There is no ratio, resolution or 2K option, and steps and guidance are fixed. It takes at most four reference photos and has no mask input. On VdoBloom it is available in the Image Edit tool only, so at least one reference photo is required. Its picker rating (3.9) is the lowest among the Flux editors. VdoBloom checks every prompt for nudity, and failed or blocked edits are refunded.
What creators use FLUX.2 [dev] for
- Cheap first drafts of a guided edit or composite from up to four reference photos, before paying for a Pro-tier run.
- Square 1024x1024 outputs: profile images, feed posts, product tiles and thumbnails.
- Style mixes, such as subject from photo 1 and look from photo 2, at 4 credits a try.
- Learning how Flux 2 responds to your prompts on the free credits (two runs) before buying a pack.
How to use FLUX.2 [dev] on VdoBloom
- 1Open the Image Edit tool and select FLUX.2 [dev].
- 2Upload the image(s) to edit and describe the change you want.
- 3Review the credit cost and generate. Results appear in your library.
Frequently asked questions
Is FLUX.2 [dev] censored?
On VdoBloom it carries the Moderate content badge, the platform's default tier, between Flexible (Qwen) and Strict (Nano Banana, GPT Image). VdoBloom checks every prompt for nudity before the edit runs, and edits blocked by the provider are refunded.
How much does FLUX.2 [dev] cost?
4 credits per image, the lowest price of any Flux model on VdoBloom. At the Lite one-time rate ($19.50 for 300 credits) that is about $0.26 an image, or 75 images per pack.
Can I use FLUX.2 [dev] for free?
Yes. New accounts get 10 free credits, enough for two FLUX.2 [dev] runs with 2 credits left over.
What size are FLUX.2 [dev] images?
Always 1024x1024. VdoBloom sends a fixed square size to the model, so there is no ratio or resolution choice. For other shapes or 2K, use Flux 2 Pro I2I (12 credits).
How many reference photos can FLUX.2 [dev] use?
Up to 4 per job. The Image Edit tool rejects a fifth photo.
Does FLUX.2 [dev] use my prompt?
Yes. It is a normal text-guided editor. FLUX Outpainting is the Flux tool that ignores the prompt, and FLUX Erase works from a painted mask.
FLUX.2 [dev] vs Flux 2 Pro I2I: what do I give up at 4 credits?
Flux 2 Pro I2I costs 12 credits and takes up to 8 photos, with a ratio menu (seven ratios plus auto) and 1K or 2K output. FLUX.2 [dev] takes up to 4 photos and always returns a 1024x1024 square. Draft on [dev], finish on Pro I2I if you need the frame or size.
Can FLUX.2 [dev] generate an image from text alone on VdoBloom?
Not in the current tools. VdoBloom lists FLUX.2 [dev] in the Image Edit tool, which needs at least one reference photo. For text-only generation, pick a model in the Text to Image tool.
Does FLUX.2 [dev] support masks?
No. It edits from reference photos and a prompt only. To change or remove just one painted area, use FLUX Erase (10 credits) or Qwen Image 2.1 Edit's mask mode (3 or 5 credits).
Is FLUX.2 [dev] open source?
VdoBloom runs it as a hosted model on Runware (runware:400@1), so there is nothing to download or install, and this page makes no claim about its licence terms. You use it in the browser and pay 4 credits per image.
FLUX.2 [dev] guides, prices and comparisons
This page is the FLUX.2 [dev] hub. Each guide below goes deeper on one question and links back here.
How to use FLUX.2 [dev]
4-credit reference-photo editing, step by step.
FLUX.2 [dev] pricing
What 4 credits per image works out to in dollars.
How to use Flux 2 Pro I2I
The 12-credit step up: 8 photos, ratios, 1K/2K.
AI image editor from a photo
Every photo-editing model on VdoBloom, grouped by job.