FLUX.2 Flex API

Built for lettering

Type

Quoted headlines, taglines and label text came back spelled exactly as written in our tests.

Largest size tier

2k

2048 pixels on the long side for text to image; 1k is about one megapixel.

Reference images

3

Up to three sources in one edit, at 1k.

Aspect ratios

9

From 21:9 to 9:21.

Renders: on screen as written. Softened: generated, but milder than what was written. Refused: rejected. Not tested yet: we have not run that level on that mode.

• Text to image

  A film poster with three lines of type

  A cinematic movie poster. Photograph of a man and a woman, both in their late thirties, standing close under a single streetlamp on a steep, rain-slick Lisbon street at night. She wears a black satin slip dress with thin straps, a man's dark overcoat draped over her bare shoulders; he wears an open-collared white shirt with the sleeves rolled up. Her hand rests on his chest and their faces are inches apart. A yellow tram glows out of focus behind them. Color grade: teal shadows and warm #F2A541 lamplight. Typography: across the top, the title "MIDNIGHT IN LISBON" in large condensed ivory serif capitals; directly under it the tagline "One night. No promises." in small italic serif; at the bottom, the line "IN CINEMAS 14 FEBRUARY" in widely spaced capitals colored #C8102E. No other text.

  Why it works. A poster at 2:3 and 1k with the title, the tagline and the release line each quoted with a position, plus a colour grade by hex value. The three lines came back spelled as written.

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• Text to image

  An album cover with script lettering

  Square jazz album cover. Photograph of a man in his forties with close-cropped grey hair and a trimmed beard, wearing a black silk shirt unbuttoned at the collar with the sleeves pushed up, playing a tenor saxophone with his eyes closed under a single deep blue #1E3A8A spotlight, cigarette-smoke haze around him, the rest of the club in darkness. Typography: at the top, "ELIAS MOREAU QUARTET" in small widely spaced white sans-serif capitals; across the lower third, the title "Blue Hour Sessions" in a large hand-lettered cream #F5E6C8 script; under it, "LIVE AT THE RIVIERA · 1962" in small capitals. No other text.

  Why it works. A square cover with the artist name, a large script title and a small caption line placed from top to bottom, and one spotlight colour given as a code.

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• Text to image

  Colour codes on a product label

  Product photograph of a cylindrical tea tin painted matte deep green #1F3B2D with a cream #F3E9D2 paper label, standing on a light oak kitchen shelf beside a white porcelain cup with a curl of steam, soft morning window light from the left. The label is framed by a thin gold #C9A227 border and reads, in elegant typography: "KESTREL & FERN" in small spaced capitals at the top, "Smoked Earl Grey" in a large flowing script in the middle, and "LOOSE LEAF · 100 g" in small capitals at the bottom. Crisp focus on the label, shallow depth of field. No other text.

  Why it works. A product shot where the tin, the label and the border each get a colour code and the label text is quoted line by line. The colours and the wording both landed.

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• Image editing

  Same woman, new night

  Keep the woman exactly as she is: same face, dark curly hair, rust-orange wool coat, cream turtleneck, dark trousers, and the same pose with her hands in her coat pockets. Change the scene to the same narrow cobblestone street late at night in light rain: the stones are wet and mirror-like, warm #FFB347 light spills from a shop window on the left, a teal neon glow comes from further down the street, and fine raindrops sit on her coat and hair. Moody cinematic night photograph.

  Why it works. One source. The prompt lists what stays, namely face, hair, coat and pose, and describes only the new weather, light and time of day.

  This mode starts from your own image: add it in the playground before you run.

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• Image editing

  A bottle moved into another scene

  Place the perfume bottle from image 1 standing on the green marble ledge from image 2, in the empty foreground center, keeping the bottle's exact shape, amber glass and brushed-brass cap. Match the scene's night light: warm amber reflections from the city lights on the glass and a soft reflection of the bottle in the polished marble. Add a small cream paper label to the front of the bottle that reads "EMBER No. 5" in thin black serif capitals. Across the top of the image add the headline "Warmth After Dark" in a thin white serif. No other text.

  Why it works. Two sources, each referred to by number: the bottle from image 1 on the ledge from image 2, with the light matched and two pieces of quoted text added.

  This mode starts from your own image: add it in the playground before you run.

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One image starts at $0.058 at 1K and $0.088 at 2K.

The playground shows the exact price for your settings before you run. Failed or timed-out tasks are usually not charged. Some models charge for content refusals as stated on their model page; check those billing terms before submitting.

About FLUX.2 Flex

FLUX.2 [flex] is Black Forest Labs' typography-minded FLUX.2 model: quoted lettering comes back as written, colour codes steer the palette, text to image reaches 2k in nine shapes, and edits take up to three sources at 1k. Its content policy applies, so it suits posters, packaging and everyday portraits; anything past the Mild level belongs on another model.