Flux 2 Flex is the image-editing variant of Flux 2 from Black Forest Labs. Instead of generating from scratch, it is built to modify an existing image — changing background, outfit, lighting or details — while keeping the subject's identity intact. It posts a high score on the editing leaderboard, making it the go-to Flux model for edits rather than fresh generation. On Twin AI you run it in one interface with every other model, straight from Russia and without a VPN.

Reach for it when you already have an image and want to change part of it without the face or product drifting into someone — or something — new.

Strengths

Flux 2 Flex ranks high on the image-editing leaderboard, and is the best Flux option for identity-preserving edits.

• Purpose-built for editing an existing image, not generating from zero.
• Preserves the subject's identity across changes.
• Shares Flux 2's texture quality and photoreal heritage from the Stable Diffusion 1.5 team.

If you need to generate a brand-new image rather than edit one, its sibling Flux 2 Pro is the better fit.

Price and speed

On Twin AI you pay in credits per generation — you pay for the result, not a monthly seat. Flux 2 Flex is an editing engine, so use it on images you already have and pay only for the edits you run. Top up with an RU card or SBP.

How to use it on Twin AI

1. Open /create/photo and pick Flux 2 Flex from the model list.
2. Provide your source image and describe the change — new background, outfit, lighting or detail.
3. Generate. No VPN needed, pay with an RU card or SBP.

Because every engine lives in one place, you can generate a base image on one model and edit it with Flux 2 Flex right after.

Alternatives

• Flux 2 Pro — the generation-focused Flux 2 sibling, for photoreal images from scratch.
• Nano Banana Pro — Google's Gemini 3 Pro Image, also ranked #3 for image editing.
• GPT Image 2 — OpenAI's #1 text-to-image flagship (Elo 1338) for maximum quality.

See the full lineup on /models, or compare two engines head-to-head on /compare.