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Seed Audio

AI audio

Seed Audio is a free AI audio generator and text-to-speech tool that can generate narration voiceovers, multi-speaker dialogue, music, sound effects, and complete audio scenes on the same platform. Users only need to describe a scene with a prompt, and the tool can simultaneously generate speech, emotion, dialogue, sound effects, and atmosphere; they can also choose their own voice, music, or ambient sound as reference audio to guide the tone, style, rhythm, and atmosphere of the generated result. It is suitable for creations such as podcasts, drama, character scenes, and cinematic soundscapes, and everything from an initial idea to finished audio can be completed in its workspace.

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Seed Audio

AI audio

Seed Audio is a hosted AI text-to-speech and voice generation tool based on Seed Audio 1.0 and ByteDance Seed Speech technology. Users can paste a script, select or clone a voice, and generate natural, emotionally expressive multilingual speech in seconds, then download or stream the audio via API. It supports instant voice cloning, voice design, and emotional pacing adjustment, covering scenarios such as video narration, podcasts, audiobooks, and in-app voice assistants. Free accounts can convert up to 120 characters per request, while paid plans increase this to 1,000 characters per request and provide commercial licensing.

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Seed-Thinking-v1.5

AI developer platforms

Seed-Thinking-v1.5 is a reasoning model launched by ByteDance's Seed team. It has the ability to "think first, then answer," achieving 86.7 on AIME 2024, 55.0 on Codeforces, and 77.3 on GPQA, with outstanding performance on reasoning tasks such as STEM and programming. The model uses a Mixture-of-Experts (MoE) architecture, with 20B activated parameters and 200B total parameters, making it relatively small in scale. In addition to reasoning tasks, it also demonstrates generalization ability across diverse domains, with a win rate on non-reasoning tasks 8% higher than DeepSeek R1. The team also developed two internal benchmarks, BeyondAIME and Codeforces, and plans to make them public to support subsequent research.

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Seedance 2.0 API

AI developer platforms

Seedance 2.0 API is a developer-oriented AI video generation API access and information page, primarily providing prompts, examples, developer guides for the Seedance 2.5 API, as well as a comparison between the 2.0 and 2.5 versions. The page is also used to track API access status, pricing, and update information. Users can submit prompts via the API, poll tasks, and obtain 4K video links, making it suitable for building video generation workflows.

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Seedance 2.1 AI Video Generator

AI video

Seedance 2.1 AI Video Generator is an online AI video generation workspace, positioned as Seedance 2.5-ready, and currently based on the text-to-video and image-to-video controls of Seedance 2.0. Users can enter a text prompt or upload a reference image, set duration, resolution, aspect ratio, and audio, and then generate a short video. The site offers multimodal reference input, director-level camera control (such as tracking shots, dolly-ins, POV, close-ups, and zoom transitions), built-in synchronized audio and lip sync, and support for aspect ratios including 16:9, 9:16, 1:1, 4:3, 3:4, and 21:9, with output at 480p, 720p, or 1080p. It is suitable for scenarios such as social media short clips, advertising concepts, product demos, educational explainers, short dramas, and visual storytelling. A daily free quota is provided, and paid plans offer more credits.

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SeedMusic AI

AI audio

SeedMusic AI is an AI song generation tool based on SeedMusic 1.0. Starting from user-provided lyrics and style, it automatically generates melody, vocals, and accompaniment, producing a complete song within minutes. It supports lyrics-to-song, zero-shot singing voice cloning from a few seconds of audio, multilingual singing, and post-generation score-style editing (note-by-note melody adjustment, line-by-line lyric modification). Users can create entirely in a browser without instruments, a recording studio, or music production experience, and can export MP3 or WAV audio. The official claim is that it offers 5 free song generations, and you can start without a credit card.

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Seedream 5.0

AI images

Seedream 5.0 is a multimodal image model series launched by ByteDance Seed for generating and editing images based on text instructions and visual references. The series includes two versions, Pro and Lite: Pro is suited for dense information, multilingual layouts, reference-sensitive precision editing, and finely detailed images close to final drafts; Lite is suited for rapid concept exploration, visual reasoning, and low-cost iteration. This site is an independent platform that provides online access to Seedream 5.0 Pro and Lite, supporting text-to-image and image-to-image, and new users who register receive 20 free credits without needing a credit card. The platform offers various payment methods such as free credits, subscriptions, and pay-as-you-go, and credit consumption varies by model and settings, with the workbench displaying an accurate quote. Generated results are saved privately in account history, and paid plans include commercial usage rights.

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Seedream 5.0 Pro

AI images

Seedream 5.0 Pro is a flagship AI image generation and editing model website, designed to turn complex creative instructions into production-ready visual deliverables. Its core advantages lie in structured composition, readable multilingual text rendering, photorealistic detail, character and product consistency, and precise reference-based editing. Users can generate infographics, posters, storyboards, ad creatives, product shots, portraits, and cinematic scenes from text prompts, or upload up to 10 reference images and describe the changes they want, and the model will execute the edits precisely while keeping unmentioned elements unchanged. It supports JPG, PNG, WebP images (up to 20MB), MP4, WebM, MOV videos (up to 100MB), and MP3, WAV, M4A, FLAC audio (up to 50MB) as assets, which can be used automatically. A free trial is available, including 1 welcome credit, access to text and image features, five aspect ratios, and generation history, with a credit-based subscription or one-time top-up model, showing credit consumption before generation and automatic refunds on failure.

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Seedream 6.0

AI images

Seedream 6.0 is an AI image generator launched by ByteDance, allowing users to generate high-quality images online for free via text prompts or uploaded images. It supports text-to-image, multi-image fusion (combining three reference images of subject, scene, and style into a single artwork), style transfer, old photo restoration, model outfit changes, background removal, text editing within photos, and character avatar generation, and can export 4K images. According to the official website, its annual subscription plans are divided into Basic, Professional, and Enterprise tiers, providing 500, 2000, and 6000 credits per month and up to 50, 200, and 600 images/month respectively, and include benefits such as commercial licensing, some advanced models, and priority generation queues (specific details are subject to the official website).

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Seedream AI Image Generator

AI images

Seedream AI Image Generator is an artificial intelligence-based image generation tool that supports the rapid creation of high-quality visual images through text prompts (text-to-image) and reference images (image-to-image). Users do not need design experience; they only need to enter a description or upload a reference image to generate high-definition images in seconds to minutes and export them in JPG, PNG, or WebP format. The tool is aimed at creators, designers, and marketers, offering a free trial quota and multiple paid plans, covering different needs from individual enthusiasts to team studios.

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