MOSS Image API
Open 5B image model for bilingual text and layout control
per image · 1K
With Max: from $0.036/img →Operational100% uptime (30 days)median 15sTry MOSS Image
Runs on your balance at the price shown on the button. Results are saved to your account.
Output image shape. At 1K: 1:1 = 1024 × 1024, 4:5 = 912 × 1136, 5:4 = 1136 × 912, 3:4 = 880 × 1168, 4:3 = 1168 × 880, 2:3 = 832 × 1248, 3:2 = 1248 × 832, 9:16 = 768 × 1360, 16:9 = 1360 × 768, 1:2 = 720 × 1440, 2:1 = 1440 × 720, 9:21 = 656 × 1552, 21:9 = 1552 × 656, 1:3 = 576 × 1760, 3:1 = 1760 × 576.
Output size, the same price at every aspect ratio: 1K = 1 MP (1024 × 1024), 1.5K ≈ 2.25 MP (1536 × 1536), 2K = 4 MP (2048 × 2048) at 1:1, with 1 MP = 1024² px. Other ratios keep the pixels: each side is the 1:1 side × √ratio, rounded down to a multiple of 16 (e.g. 2K 16:9 = 2720 × 1536).
If set to true, the safety checker will be enabled. Content our Acceptable Use Policy prohibits stays blocked either way.
Create a free account with Google or email — pay only for what you generate.
Your image will appear here
Write a prompt, pick your settings and hit Run. You only pay for successful generations.
Made with MOSS Image
A hand-painted wooden sign outside a tea shop that reads “山间茶舍 MOUNTAIN TEA HOUSE — OPEN DAILY 9–6”, morning mist, warm light
A café chalkboard menu that reads “今日特饮 TODAY'S SPECIALS — 桂花拿铁 Osmanthus Latte $5”, chalk texture, warm interior light
{"scene_type":"Chinese literature textbook photograph","gen_brief":"A realistic editorial photograph of an open Chinese senior-school literature textbook on a warm wooden study desk. The printed lesson presents Wang Xizhi's Lanting preface in authentic simplified Chinese, with carefully typeset classical prose and compact explanatory footnotes. Use a nearly overhead camera, natural window light, subtle paper translucency, gently curved pages, and soft binding shadows. The image should feel like an ordinary student's clean textbook snapshot rather than a designed poster, with crisp readable printing and restrained, believable photographic texture.","elements":[{"type":"obj","salience":"primary","identity":"Open Chinese literature textbook","shape":"Ivory uncoated paper, gently bowed binding, fine black textbook printing, faint reverse-side ink, layered page edges, understated blue lesson accents.","colors":[{"color":"Ivory paper","hex":"#F5F0E5"},{"color":"Printing black","hex":"#292824"},{"color":"Muted textbook blue","hex":"#496878"}],"bbox":[-685,-544,691,508]},{"type":"text","text":"古代散文阅读","bbox":[-616,-324,-582,-99],"shape":"Small muted-blue Chinese sans-serif characters, restrained tracking and natural square proportions.","is_watermark":false},{"type":"text","text":"兰亭集序","bbox":[-542,-116,-465,281],"shape":"Bold black Song-style Chinese title, prominent triangular serifs, evenly spaced natural-width characters.","is_watermark":false},{"type":"text","text":"王羲之","bbox":[-446,14,-410,152],"shape":"Small centered black Song-style characters with airy spacing.","is_watermark":false},{"type":"text","text":"永和九年，岁在癸丑，暮春之初，会于会稽山阴\n之兰亭，修禊事也。群贤毕至，少长咸集。此地有崇\n山峻岭，茂林修竹，又有清流激湍，映带左右，引以\n为流觞曲水，列坐其次。虽无丝竹管弦之盛，一觞一\n咏，亦足以畅叙幽情。是日也，天朗气清，惠风和畅。\n仰观宇宙之大，俯察品类之盛，所以游目骋怀，足以\n极视听之娱，信可乐也。","bbox":[-357,-319,-90,436],"shape":"Black Song-style body text, regular square glyphs, generous leading, first-line indentation, subtle paper curvature.","is_watermark":false},{"type":"text","text":"夫人之相与，俯仰一世。或取诸怀抱，悟言一室\n之内；或因寄所托，放浪形骸之外。虽趣舍万殊，静\n躁不同，当其欣于所遇，暂得于己，快然自足，不知\n老之将至；及其所之既倦，情随事迁，感慨系之矣。\n向之所欣，俯仰之间，已为陈迹，犹不能不以之兴怀；\n况修短随化，终期于尽！古人云：“死生亦大矣。”\n岂不痛哉！","bbox":[-60,-319,207,436],"shape":"Matching black Song-style body text, first-line indentation, measured line spacing and crisp punctuation.","is_watermark":false},{"type":"text","text":"注释\n〔永和九年〕公元353年。永和，东晋穆帝年号。\n〔会稽山阴〕今浙江绍兴。\n〔修禊〕古代于暮春临水举行的祓除不祥的仪式。\n〔流觞曲水〕把酒杯浮在弯曲的水道中，任其漂流，\n停在谁的面前，谁就取来饮酒。\n〔悟言〕面对面交谈。“悟”同“晤”。","bbox":[330,-319,546,427],"shape":"Compact black Song-style footnotes; slightly bolder heading, hanging entries, smaller natural-width glyphs and even leading.","is_watermark":false},{"type":"text","text":"42","bbox":[615,41,643,82],"shape":"Tiny black serif page number with native numeral proportions.","is_watermark":false},{"type":"obj","salience":"secondary","identity":"Wooden desktop","note":"Provides an everyday study setting.","bbox":[-728,-544,728,544],"shape":"Matte honey-brown wood with restrained grain, minor surface wear and soft natural shadows.","colors":[{"color":"Warm wood","hex":"#B58B61"},{"color":"Dark wood grain","hex":"#896547"}]},{"type":"obj","salience":"secondary","identity":"Narrow facing-page strip and binding gutter","note":"Makes the photographed page clearly part of an open textbook.","bbox":[-673,-544,667,-354],"shape":"Curved ivory page sliver, dark soft binding crease, subtly curled paper and thin layered edges; no readable printing.","colors":[{"color":"Ivory paper","hex":"#F5F0E5"},{"color":"Gutter shadow","hex":"#B6AA97"}]},{"type":"obj","salience":"secondary","identity":"Textbook running-header rule","note":"Restrained printed lesson styling.","bbox":[-567,-321,-563,435],"shape":"Very thin, straight muted-blue printed rule with slight paper-grain absorption.","colors":[{"color":"Muted textbook blue","hex":"#496878"}]},{"type":"obj","salience":"secondary","identity":"Footnote separator","note":"Distinguishes annotations from the classical prose.","bbox":[298,-319,302,-54],"shape":"Short hairline black printing, clean and understated.","colors":[{"color":"Printing black","hex":"#292824"}]}],"must_not":["not a calligraphy scroll or handwritten manuscript","not a promotional poster or infographic","not modern prose substituted for the classical passage"],"palette":["#F5F0E5","#292824","#B58B61","#496878","#B6AA97"],"bbox_coord_space":"abs_centralized"}
Made by OpenMOSS with MOSS-Image-Base at 1088 × 1456; results here will differ.
Image: OpenMOSS · Apache-2.0 · re-encoded to WebP, with a 480 px thumbnail
A battered green notice sign leaning by a rural road, densely printed with a tongue-in-cheek Chinese essay under the heading “不一定”
Made by OpenMOSS with MOSS-Image-Base at 1184 × 1776; results here will differ.
Image: OpenMOSS · Apache-2.0 · re-encoded to WebP, with a 480 px thumbnail
A scanned Chinese physics practice exam headed “物理”, with instructions, six multiple-choice questions, formulas and two diagrams
Made by OpenMOSS with MOSS-Image-Base at 1056 × 1488; results here will differ.
Image: OpenMOSS · Apache-2.0 · re-encoded to WebP, with a 480 px thumbnail
多层折叠式纸雕立体绘本，放在一张书桌上，背景纯净突出主题，比例 3:2 横版。翻开的跨页呈现「哪吒闹海」的场景：脚踏风火轮的少年、翻涌的层叠海浪与龙宫剪影，所有元素皆可精细折叠组合，呈现逼真细腻的纸张折叠质感与多层景深。构图统一采用正面视角，整体视觉梦幻唯美，色彩缤纷绚丽，充满奇幻生动的故事氛围。
Made by OpenMOSS with MOSS-Image-Base at 1536 × 1024; results here will differ. “Try it” sets 3:2 · 1K, the closest size we offer.
Image: OpenMOSS · Apache-2.0 · re-encoded to WebP, with a 480 px thumbnail
A cinematic, photorealistic nighttime scene of a small neighborhood convenience store on a quiet, rain-soaked street. The warmly illuminated storefront occupies the right half of the frame, while the street recedes into soft mist on the left. A lone young adult wearing a charcoal coat stands just outside the entrance beneath a transparent umbrella, seen in three-quarter rear view, gazing through the glass. Amber light reveals shelves inside and spills across the sidewalk, mingling with muted teal neon reflections in shallow puddles. Individual raindrops bead on the umbrella and catch the storefront light; fine streaks of rain remain visible against the darker street. A slightly weathered bicycle leans beside the entrance. Distant apartment windows and a few out-of-focus streetlights add depth without distracting from the figure. Eye-level wide shot, 35mm lens aesthetic, natural perspective, balanced negative space, restrained teal-and-amber color grading, realistic wet asphalt and glass textures, soft highlight bloom, subtle film grain, and gentle atmospheric depth. Quiet, intimate, and nostalgic rather than dramatic; believable lighting, with the figure clearly silhouetted against the warm window. No prominent readable lettering, logos, or watermarks.
Made by OpenMOSS with MOSS-Image-Base at 1680 × 944; results here will differ. “Try it” sets 16:9 · 1K, the closest size we offer.
Image: OpenMOSS · Apache-2.0 · re-encoded to WebP, with a 480 px thumbnail
A wide view of a refrigerator beside a kitchen counter with a fruit bowl. A small sticky note on the refrigerator door is handwritten in Chinese: “记得买牛奶和鸡蛋！牛奶两盒，鸡蛋一打。”
Minimalist travel poster, cream background, a flat blue mountain illustration, the title “EXPLORE” in large dark-blue capitals at the top
What is MOSS Image?
MOSS Image from OpenMOSS is an open-weights 5B text-to-image model that renders legible Chinese and English text and places text and objects where a JSON layout says, at 1K, 1.5K or 2K.
Text that reads right, in two languages
MOSS Image is trained for typography: signs, posters, menus, notes and packaging with accurate Chinese and English text, line breaks and mixed scripts. Put the words to render in quotes.
Layout as input
Besides plain prompts and tag lists, MOSS Image takes a JSON layout: a scene caption plus items, each with a description, the text to render and a bounding box in pixels from the canvas centre. Use the canvas of the resolution and aspect ratio you request — they are listed with each option.
Open weights
OpenMOSS releases MOSS Image under Apache-2.0: a 5B diffusion transformer with a Qwen3.5 text encoder that accepts long prompts. It is served on GPU inference for open-source models.
MOSS Image pricing
Pay per image as you go, with no subscription required. Failed generations are refunded automatically.
| Tier | fal API | CheaperGen | You save |
|---|---|---|---|
1K 1024 × 1024 | $0.0384/img With a monthly plan: Pro $0.0368Max $0.0352 | −23% | |
1.5K 1536 × 1536 | $0.0826/img With a monthly plan: Pro $0.0788Max $0.0749 | −27% | |
2K 2048 × 2048 | $0.1534/img With a monthly plan: Pro $0.1469Max $0.1404 | −23% |
Monthly plans lower prices on most models (shown under each price); you can still pay as you go. Pro $499/month · Max $4,999/month.
- fal API: fal's public price for MOSS Image, $0.05 per megapixel, on the output's pixels (OpenMOSS sells no international API) — https://fal.ai/models/fal-ai/moss-image. Prices verified October 22, 2026.
- One price per resolution, whatever the aspect ratio.
Specifications
- Resolutions
- 1K (1024 × 1024) · 1.5K (1536 × 1536) · 2K (2048 × 2048)
- Aspect ratios
- 1:1 · 4:5 · 5:4 · 3:4 · 4:3 · 2:3 · 3:2 · 9:16 · 16:9 · 1:2 · 2:1 · 9:21 · 21:9 · 1:3 · 3:1
- Canvas at 16:9
- 1K 1360 × 768 · 1.5K 2048 × 1152 · 2K 2720 × 1536
- Prompt input
- Natural language, tags or JSON layout
- Model
- 5B DiT, Qwen3.5 text encoder
- Weights
- Open (Apache-2.0)
- Enable Safety Checker
- Default true · can be set to false over the API
- Released
- Oct 16, 2026
Use MOSS Image via API
One request to start a job, one to fetch the result. Same shape for every model.
const API = "https://cheapergen.com/api/v1";
const headers = {
Authorization: `Bearer ${process.env.CHEAPERGEN_API_KEY}`,
"Content-Type": "application/json",
};
// 1. Submit the job
let job = await fetch(`${API}/run/openmoss/moss-image/text-to-image`, {
method: "POST",
headers,
body: JSON.stringify({
"prompt": "A hand-painted wooden sign outside a tea shop that reads “山间茶舍 MOUNTAIN TEA HOUSE — OPEN DAILY 9–6”, morning mist, warm light",
"aspect_ratio": "1:1",
"resolution": "1K"
}),
}).then((r) => r.json());
// 2. Poll until it finishes (or pass webhook_url and skip polling)
while (job.status === "queued" || job.status === "running") {
await new Promise((r) => setTimeout(r, 3000));
job = await fetch(`${API}/generations/${job.id}`, { headers }).then((r) => r.json());
}
console.log(job.status === "succeeded" ? job.output.images[0].url : job.error);MOSS Image FAQ
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MOSS Image is OpenMOSS' open-weights model. CheaperGen provides API access to the open weights, run on GPU inference for open-source models, and does not own the model. Trademarks belong to their respective owners. · Markdown · OpenAPI