ByteDance의 SeedRealtime 모델은 자연스러운 음성 합성(TTS), 실시간 오디오 처리 및 고정밀 음성 인식에 최적화된 AI 모델로, 128K 컨텍스트 윈도우, 초당 120 토큰의 생성 속도, 종합 지능 지수 83/100점(1M 토큰당 입력 $0.5 / 출력 $2)을 제공합니다.
Technical Specifications
- Provider
- ByteDance
- Category
- flagship
- Release Date
- 2026-08
- Batch API Discount
- 50% off async batch
- Consumer Subscription
- API Pay-as-you-go
- Reasoning Effort Control
- Fixed
- Structured Outputs
- Yes
- Output Modalities
- text, audio
- Official Documentation
- Visit Official Docs ↗
Data Privacy, Licensing & Deployment Governance
Official Provider Release Intelligence, API Quotas & Agentic Specs
- Official API Model ID (SDK String)
- seedrealtime
- Supported SDK & API Protocol
- ByteDance REST API (OpenAI-Compatible)
- Lifecycle & Deprecation Status
- Active GA (Guaranteed support through 2028+)
- Production Rate Limits (RPM & TPM)
- 5,000 – 15,000 RPM (Production Tier) · 800,000 – 2,000,000 TPM
- Long-Context Pricing Tier (>128K / >200K)
- Flat rate ($0.5/1M in) across full 128K window
- Prompt Cache Write & TTL Policy
- Cached input at $0.05/1M tokens
- Computer Use & Browser GUI Agent
- Supported (Screen coordinate grounding, browser & desktop GUI action loops)
- MCP & Parallel Tool Calling
- Native MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema
- Web Search Grounding & Code Sandbox
- Supported via external Tavily/Exa Search & E2B/Docker Sandbox tools
- Fine-Tuning & Distillation Support
- API Prompt Engineering & RAG Distillation
- Multimodal Tokenization Billing
- Text BPE (~4 chars/token) · Vision (~258–765 tokens per image tile) · Audio (~25–32 tokens/sec)
- Weights Precision & Quantization
- Cloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster)
- Minimum GPU VRAM Requirement
- Zero Local VRAM Required (100% Serverless Cloud API)
- Supported Inference Engines
- Managed ByteDance Cloud API
- System Card & Safety Framework
- ByteDance Production Safety & Alignment Verified
- Enterprise Compliance (SOC2 / HIPAA / ZDR)
- SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier
SeedRealtime Cost, Context, Hardware & API Integration
For single-user chat, a $20/mo subscription caps your bill below this API volume.
Break-even point: ~215 requests/day equals $20/month.
Same Monthly Workload Cost Across Popular Reference Models
Live Prompt Paste Tokenizer & Cost Counter
Paste real system instructions, JSON schemas, or code to measure BPE token counts across tokenizers.
Hybrid Prompt Routing Cascade Simulator
Route routine queries to a fast lightweight model ($0.15/1M) and escalate only complex reasoning turns to SeedRealtime:
Benchmark Scores & 6-Axis Capability Radar
- MMLU-Pro
- 78.5%
- HumanEval
- 86%
- Chatbot Arena Elo
- 1335pts
Strengths
- 128K 컨텍스트 윈도우 및 최대 8K 출력 토큰 생성 지원 (MMLU-Pro 78.5% · Arena Elo 1335)
- 초당 120 토큰의 빠른 처리 속도와 280ms에 불과한 첫 토큰 지연 시간(TTFT)
- 합리적인 API 요금 체계(1M 토큰당 입력 $0.5 / 출력 $2)와 프롬프트 캐싱, 함수 호출 및 정형화된 JSON 출력 완벽 지원
Limitations & Trade-offs
- 독점 클라우드 전용 모델로 로컬 오프라인 서버에 가중치를 다운로드하여 실행할 수 없습니다
- 초고난도 학술 연구 및 수학 증명 과제에서는 상위 대형 추론 특화 모델이 더 깊은 분석을 제공할 수 있습니다
Editorial Assessment
지능 지수 83/100점, 128K 컨텍스트, 초당 120 토큰의 속도를 갖춘 SeedRealtime 모델은 ByteDance 생태계에서 성능과 경제성을 모두 만족시키는 검증된 선택입니다.
Best for: 자연스러운 음성 합성(TTS), 실시간 오디오 처리 및 고정밀 음성 인식, 엔터프라이즈 RAG 지식베이스 및 대규모 프로덕션 API 연동에 최적.
Compare SeedRealtime
Frequently Asked Questions about SeedRealtime
How much does the SeedRealtime API cost per 1M tokens?+
SeedRealtime by ByteDance is priced at $0.5 per 1M input tokens and $2 per 1M output tokens. With prompt caching enabled, cached input tokens cost $0.05 per 1M tokens, and asynchronous Batch API requests receive a 50% discount.
Should I use a $20/month subscription or the SeedRealtime pay-as-you-go API?+
A flat $20/month consumer subscription is predictable for daily interactive chat and manual coding. However, if you are building software, running automated workflows, or sending low-to-moderate volume with prompt caching enabled, the pay-as-you-go API is typically far more cost-effective and offers higher rate limits without manual UI caps.
How many words and pages fit in SeedRealtime's context window?+
SeedRealtime features a 128K tokens context window, which equals approximately 96,000 English words or ~256 standard single-spaced pages in a single prompt. Its maximum output generation per turn is 8,192 tokens.
Can I run SeedRealtime locally on my own GPU (Open Weights)?+
No, SeedRealtime is a proprietary closed-weights model hosted by ByteDance. It cannot be downloaded for local GPU execution and must be accessed via ByteDance's official API or cloud platform.
Does ByteDance train on data sent to the SeedRealtime API, and is commercial use allowed?+
API payloads are excluded from model training by default. License tier: Proprietary Commercial API (ByteDance Terms). Full commercial ownership of generated outputs. Supported deployment channels include: ByteDance Cloud API & Enterprise Endpoints.
How does SeedRealtime perform on coding and reasoning benchmarks?+
SeedRealtime achieves a composite Intelligence Index of 83/100, scoring N/A% on SWE-bench Verified, N/A% on GPQA Diamond, 78.5% on MMLU-Pro, and 1335 pts on Chatbot Arena Elo.
What is SeedRealtime best used for?+
SeedRealtime is best suited for: 자연스러운 음성 합성(TTS), 실시간 오디오 처리 및 고정밀 음성 인식, 엔터프라이즈 RAG 지식베이스 및 대규모 프로덕션 API 연동에 최적.. Assessment: 지능 지수 83/100점, 128K 컨텍스트, 초당 120 토큰의 속도를 갖춘 SeedRealtime 모델은 ByteDance 생태계에서 성능과 경제성을 모두 만족시키는 검증된 선택입니다.
ByteDance Family Lineage, Routing Tiers & Upgrade Path
Step down to a lighter sibling for high-volume routing or step up to ByteDance's flagship reasoning tier:
AI Glossary & Architecture Concepts
View full glossary →Key machine learning concepts and benchmarks relevant to SeedRealtime:
The basic unit of text that a language model processes, typically representing about 3 to 4 English characters or roughly 0.75 words. For example, the sentence "Artificial intelligence is fast" breaks down into about 5 tokens.
A standardized evaluation suite used to objectively measure and rank an AI model's capabilities across specific tasks — such as SWE-bench Verified for software engineering, AIME for competitive math, or MMLU for general knowledge.
The maximum number of tokens a model can consider at once — both the input it reads and the output it writes. A 1,000,000-token context window can hold roughly 750,000 English words in a single request.
An AI model trained via reinforcement learning to spend dynamic compute thinking through complex logic, math, and architectural problems before outputting a solution. Examples include OpenAI o1, o3, and DeepSeek R1.
A step-by-step reasoning technique where an AI model generates intermediate problem-solving thoughts before arriving at a final answer. Native reasoning models like OpenAI o3 and DeepSeek R1 use CoT to solve complex math and coding challenges.
The ability of a language model to recognize when an external capability is needed and output structured JSON arguments to invoke external APIs, databases, or terminal commands. The runtime executes the tool and passes results back to the model.
Benchmark scores, token prices, and rate limits evolve rapidly as AI labs release model updates. Always verify current specifications and pricing on the official provider documentation.