# Seedream v5.0 Pro Text-to-Image — Atlas Cloud API > ByteDance flagship next-generation image generation model with stronger prompt adherence, refined typography, and photorealistic detail. Single-image output at 1.5K and 2K tiers with JPEG and PNG support. This is the machine-readable API reference for **Seedream v5.0 Pro Text-to-Image** on Atlas Cloud, a unified API platform for 400+ AI models across text, image, video, audio and 3D. - **Model ID**: `bytedance/seedream-v5.0-pro/text-to-image` - **Built by**: ByteDance - **Modality**: Image - **Model page**: https://www.atlascloud.ai/models/bytedance/seedream-v5.0-pro/text-to-image - **API key**: https://www.atlascloud.ai/console/api-keys - **Docs**: https://www.atlascloud.ai/docs ## Pricing on Atlas Cloud - $0.045 per image - Pay-as-you-go. No minimum spend, no subscription required. > **These are the authoritative Atlas Cloud rates for this model.** Any price that > appears in the vendor description further down refers to a different platform or > a different model variant and does not apply here. ## Use this model from an AI agent Atlas Cloud ships three first-party integration surfaces. All three authenticate with the same API key via the `ATLASCLOUD_API_KEY` environment variable. ### MCP server The official MCP server (`atlascloud-mcp`) exposes this model to any MCP-compatible host — Claude Code, OpenAI Codex, Cursor, Gemini CLI, Goose, Claude Desktop. One-line install: ```bash # Claude Code claude mcp add atlascloud -- npx -y atlascloud-mcp # OpenAI Codex CLI codex mcp add atlascloud -- npx -y atlascloud-mcp # Gemini CLI gemini mcp add atlascloud -- npx -y atlascloud-mcp export ATLASCLOUD_API_KEY="your-api-key" ``` Then ask in plain English; the agent calls `atlas_generate_image` with `model: "bytedance/seedream-v5.0-pro/text-to-image"`. The server fetches each model's schema and validates parameters before submitting, so invalid requests fail fast without spending credits. MCP docs: https://www.atlascloud.ai/docs/mcp-server ### Agent Skills `atlas-cloud-skills` is a portable skill package (API reference, code templates in Python / Node.js / cURL, model IDs with pricing) for Claude Code, Cursor, Codex and 12+ other agents: ```bash npx skills add AtlasCloudAI/atlas-cloud-skills export ATLASCLOUD_API_KEY="your-api-key" ``` Skills docs: https://www.atlascloud.ai/docs/skills ### CLI The `atlas` binary runs Atlas Cloud from a terminal or CI script. Async media jobs are polled and downloaded automatically (use `--no-download` when a script only needs the output URLs): ```bash # Install (Homebrew, npm, or shell installer) brew install AtlasCloudAI/tap/atlascloud # npm install -g atlascloud-cli # curl -fsSL https://raw.githubusercontent.com/AtlasCloudAI/cli/main/install.sh | sh atlas auth login atlas generate image bytedance/seedream-v5.0-pro/text-to-image -p "Your prompt here" ``` CLI docs: https://www.atlascloud.ai/docs/cli ## HTTP API reference - **Submit endpoint (POST)**: `https://api.atlascloud.ai/api/v1/model/generateImage` — start an async generation; returns a `prediction_id` - **Poll endpoint (GET)**: `https://api.atlascloud.ai/api/v1/model/prediction/{prediction_id}` — poll this until the prediction finishes - **Model ID**: `bytedance/seedream-v5.0-pro/text-to-image` ## API Information This model can be used via our HTTP API or more conveniently via our client libraries. See the input and output schema below, as well as the usage examples. ### Input Schema The API accepts the following input parameters: - **`model`** (`string`, _required_): model name - Default: `"bytedance/seedream-v5.0-pro/text-to-image"` - **`prompt`** (`string`, _required_): The positive prompt for the generation. Recommended length: under 600 English words. - **`size`** (`string`, _optional_): Output image size in 'WIDTH*HEIGHT' pixels. Total pixels must stay within [1,048,576 (1024*1024), 4,194,304 (2048*2048)] and aspect ratio within [1/16, 16]. Billing tier is by total output pixel count: <= 2.36M px bills at the 1.5K tier; larger sizes bill at the 2K tier. - Default: `"2048*2048"` - Options: "2048*2048", "2304*1728", "1728*2304", "2720*1530", "1530*2720", "2496*1664", "1664*2496", "1024*1024", "1536*1536", "1776*1328", "1328*1776", "2048*1152", "1152*2048" - **`output_format`** (`string`, _optional_): Output image file format. Seedream v5.0 Pro supports both JPEG and PNG output. - Default: `"jpeg"` - Options: "jpeg", "png" - **`thinking`** (`string`, _optional_): Controls the deep-thinking phase of automatic prompt optimization. Set to 'disabled' to skip prompt-optimization thinking for faster generation (text-to-image completes significantly faster; editing latency is largely unaffected). - Default: `"enabled"` - Options: "enabled", "disabled" - **`prompt_optimization_mode`** (`string`, _optional_): Prompt optimization mode. 'standard' (default) produces higher-quality prompt optimization but takes longer. 'fast' takes significantly less time with slightly lower quality. Billing is identical in both modes. For the fastest generation set thinking to 'disabled' as well — when thinking is enabled, the deep-thinking phase still dominates latency. - Default: `"standard"` - Options: "standard", "fast" - **`enable_base64_output`** (`boolean`, _optional_): If enabled, the output will be encoded into a BASE64 string instead of a URL. This property is only available through the API. - Default: `false` **Required Parameters Example**: ```json { "model": "bytedance/seedream-v5.0-pro/text-to-image", "prompt": "" } ``` **Full Example**: ```json { "model": "bytedance/seedream-v5.0-pro/text-to-image", "prompt": "", "size": "2048*2048", "output_format": "jpeg", "thinking": "enabled", "prompt_optimization_mode": "standard", "enable_base64_output": false } ``` ### Output Schema The API returns the following output format: - **`created_at`** (`string`, _optional_): ISO timestamp of when the request was created (e.g., "2023-04-01T12:34:56.789Z"). - **`id`** (`string`, _optional_): Unique identifier for the prediction, the ID of the prediction to get. - **`model`** (`string`, _optional_): Model ID used for the prediction. - **`outputs`** (`array[string]`, _optional_): Array of URLs to the generated content (empty when status is not completed). - **`status`** (`string`, _optional_): Status of the task: created, processing, completed, or failed. - **`urls`** (`object`, _optional_): Object containing related API endpoints. **Example Response**: ```json { "created_at": "", "id": "", "model": "", "outputs": [ "" ], "status": "", "urls": {} } ``` ## Usage Examples ### cURL ```bash # Step 1: Start generation (async) curl -X POST "https://api.atlascloud.ai/api/v1/model/generateImage" \ -H "Authorization: Bearer $ATLASCLOUD_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "model": "bytedance/seedream-v5.0-pro/text-to-image", "prompt": "", "size": "2048*2048", "output_format": "jpeg", "thinking": "enabled", "prompt_optimization_mode": "standard", "enable_base64_output": false }' # Response will contain: {"code": 200, "data": {"id": "prediction_id", "status": "processing"}} # Step 2: Poll for result (replace {prediction_id} with the id returned above) curl -X GET "https://api.atlascloud.ai/api/v1/model/prediction/{prediction_id}" \ -H "Authorization: Bearer $ATLASCLOUD_API_KEY" # Keep polling until status is "completed", "succeeded" or "failed" # When completed, outputs will contain the generated content URL(s) ``` ## Additional Resources ### Documentation - [Model Playground](https://www.atlascloud.ai/models/bytedance/seedream-v5.0-pro/text-to-image) ## About this model _Vendor-supplied description. Any pricing or endpoint mentioned below refers to_ _other platforms — use the Atlas Cloud values above._ #### 1. Introduction **Seedream 5.0 Pro** is ByteDance's flagship image generation model, unveiled at the Volcano Engine FORCE 2026 conference on June 23, 2026, alongside Seedance 2.5. Positioned above Seedream 5.0 Lite and Seedream 4.5 in the family lineup, the Pro model concentrates the family's advances in prompt adherence, compositional reasoning, and design-grade output quality into a single-image generation engine tuned for professional creative work. Where Seedream 5.0 Lite optimizes for speed and volume, Seedream 5.0 Pro prioritizes per-image quality: stronger interpretation of long, detailed prompts, more faithful spatial logic, and refined typography and layout handling. It generates exactly one carefully composed image per request, making it the family's choice for hero assets, campaign visuals, and design comps where a single image has to be right ([BytePlus ModelArk](https://docs.byteplus.com/en/docs/ModelArk/1824121)). --- #### 2. Key Features & Innovations - **Flagship Prompt Adherence**: Deep multi-step interpretation of detailed prompts — subject relationships, spatial constraints, lighting direction, and stylistic intent are followed with noticeably higher fidelity than earlier Seedream generations. - **Design-Grade Typography & Layout**: The Seedream 5.0 family leads its class in structured visual design — accurate CJK text rendering, clean UI mock-ups, and coherent infographic layouts, the one category where it decisively beat Google's Nano Banana 2 in independent head-to-head testing. - **Two Quality-Matched Output Tiers**: A fast, economical **1.5K tier** (up to ~2.36M pixels, e.g. 1536×1536, 2048×1152) and a premium **2K tier** (up to 2048×2048 total pixels, with 16:9 output reaching 2848×1600 ≈ 2.8K in resolution-keyword mode) let you match resolution to use case within one model. _(Description truncated. Full text on the model page.)_ --- Atlas Cloud — one API for 400+ AI models. Model page: https://www.atlascloud.ai/models/bytedance/seedream-v5.0-pro/text-to-image · Docs: https://www.atlascloud.ai/docs