{"passport":{"unfragile":{"@version":"1.0","version":"2026-05","artifact":{"id":"awesome-eleven-labs","slug":"eleven-labs","name":"Eleven Labs","type":"product","url":"https://beta.elevenlabs.io/","page_url":"https://unfragile.ai/eleven-labs","categories":["voice-audio"],"tags":[],"pricing":{"model":"unknown","free":false,"starting_price":null},"status":"active","verified":false},"capabilities":[{"id":"awesome-eleven-labs__cap_0","uri":"capability://text.generation.language.neural.network.based.text.to.speech.synthesis.with.voice.cloning","name":"neural-network-based text-to-speech synthesis with voice cloning","description":"Converts written text into natural-sounding speech using deep neural networks trained on multi-lingual voice data, with the ability to clone speaker characteristics from short audio samples (typically 1-5 seconds). The system uses a two-stage architecture: a text encoder that processes linguistic features and a vocoder that generates waveforms, enabling preservation of prosody, intonation, and speaker identity across different utterances.","intents":["Generate voiceovers for video content without hiring voice actors","Create multiple voice variants of the same script for A/B testing","Clone a specific speaker's voice for consistent branded narration","Produce audiobook narration at scale across hundreds of chapters","Add voice to interactive applications and chatbots with natural delivery"],"best_for":["Content creators and video producers building multimedia assets","SaaS founders adding voice features to applications without ML expertise","Audiobook publishers and podcast networks scaling production","Accessibility teams adding audio alternatives to text content"],"limitations":["Voice cloning quality degrades with accented or heavily processed source audio; requires clear, clean samples","Latency ranges 2-8 seconds for typical sentence synthesis depending on length and model selection","No fine-grained control over emotional delivery or speaking style beyond preset voice selections","Cloned voices may exhibit artifacts when speaking outside the phonetic range of training data","Real-time streaming has higher latency than batch processing; not suitable for sub-500ms response requirements"],"requires":["API key from Eleven Labs account","Text input (UTF-8 encoded, typically 100-5000 characters per request)","For voice cloning: audio sample file (MP3, WAV, or similar format, 1-5 seconds duration)","Network connectivity for API calls (REST or WebSocket endpoints)"],"input_types":["plain text","SSML markup for pronunciation control","audio files (MP3, WAV, M4A) for voice cloning","language code specification (en, es, fr, de, it, pt, pl, nl, tr, ru, zh, ja, ko, etc.)"],"output_types":["audio stream (MP3 format)","WAV format","raw PCM audio","streaming audio chunks via WebSocket"],"categories":["text-generation-language","audio-synthesis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-eleven-labs__cap_1","uri":"capability://text.generation.language.multi.language.speech.synthesis.with.automatic.language.detection","name":"multi-language speech synthesis with automatic language detection","description":"Automatically detects the input language and applies appropriate phonetic, prosodic, and linguistic models for synthesis across 30+ languages and regional variants. The system uses language-specific tokenizers and phoneme inventories to handle script differences (Latin, Cyrillic, CJK characters) and applies language-appropriate stress patterns and intonation curves during waveform generation.","intents":["Generate voiceovers for global content without manually specifying language","Create multilingual customer support chatbot responses with appropriate voice characteristics","Produce training materials in multiple languages with consistent voice quality","Localize video content for different regional markets with native-sounding narration"],"best_for":["International SaaS platforms serving users across multiple language regions","Global content creators and media companies with multilingual audiences","Enterprise customer support teams handling inquiries in multiple languages"],"limitations":["Code-switching (mixing languages within a single utterance) may produce artifacts or incorrect phoneme selection","Less common language variants (e.g., regional dialects) have lower synthesis quality than major languages","Automatic language detection can fail on very short inputs (< 10 characters) or mixed-script text","Regional accents within a language cannot be precisely controlled; only major regional variants are supported"],"requires":["Text input in supported language (auto-detection enabled by default)","Optional explicit language code parameter to override auto-detection"],"input_types":["plain text in any supported language","SSML with language tags for mixed-language content","language code (ISO 639-1 format: en, es, fr, de, zh, ja, etc.)"],"output_types":["audio stream with language-appropriate phonetics and prosody","metadata indicating detected language and confidence score"],"categories":["text-generation-language","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-eleven-labs__cap_10","uri":"capability://data.processing.analysis.voice.isolation.and.enhancement.for.cloning.source.audio.preprocessing","name":"voice isolation and enhancement for cloning source audio preprocessing","description":"Applies audio preprocessing to cloning source samples, including noise reduction, background music removal, and voice isolation using neural source separation. The system automatically detects and removes non-voice audio (background noise, music, other speakers) before speaker embedding extraction, improving cloning quality without requiring manual audio editing.","intents":["Clone voices from real-world recordings with background noise or music","Extract speaker embeddings from podcast episodes or video interviews without manual audio cleanup","Improve cloning quality from compressed or low-quality source audio","Enable voice cloning from user-provided audio without requiring professional audio editing"],"best_for":["Applications accepting user-provided audio for voice cloning","Content creators working with real-world recordings (podcasts, interviews, videos)","Accessibility and personalization features requiring robust voice cloning"],"limitations":["Voice isolation may remove important voice characteristics (e.g., breathing, vocal fry) that contribute to speaker identity","Preprocessing adds 2-5 seconds latency before speaker embedding extraction","Very noisy or heavily compressed audio may still produce poor cloning results despite preprocessing","Voice isolation is not perfect; may leave residual background noise or remove voice content","Preprocessing is automatic; no user control over isolation aggressiveness or parameters"],"requires":["Audio sample file (MP3, WAV, M4A, etc.)","Voice isolation preprocessing enabled (default or explicit parameter)"],"input_types":["audio file with background noise or music","preprocessing parameters (optional: isolation aggressiveness)"],"output_types":["isolated voice audio (for preview)","speaker embedding extracted from isolated audio","cloned voice ID"],"categories":["data-processing-analysis","text-generation-language"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-eleven-labs__cap_2","uri":"capability://text.generation.language.voice.preset.library.with.fine.tuned.speaker.models","name":"voice preset library with fine-tuned speaker models","description":"Provides a curated library of 100+ pre-trained voice models spanning different ages, genders, accents, and emotional tones. Each voice is a fine-tuned neural model optimized for specific characteristics (e.g., professional, friendly, authoritative, youthful). Users select voices by name or ID rather than training custom models, reducing latency and enabling instant voice switching without retraining.","intents":["Select appropriate voice personality for different content types (e.g., professional for corporate videos, friendly for children's content)","Maintain consistent voice across multiple projects without managing custom model training","Quickly prototype different voice options for A/B testing without engineering overhead","Access diverse voice characteristics (age, gender, accent) for inclusive content creation"],"best_for":["Content creators and agencies needing quick voice selection without ML expertise","Teams producing high-volume content requiring consistent voice identity","Accessibility-focused organizations needing diverse voice options"],"limitations":["Limited customization of voice characteristics; cannot blend or interpolate between preset voices","Voice selection is discrete (choose from list) rather than continuous parameter space","New custom voices require voice cloning workflow; cannot create entirely new voices from scratch","Preset voices may be recognizable across projects, reducing uniqueness for branded content"],"requires":["Voice ID or name from Eleven Labs voice library","API access with voice preset data"],"input_types":["voice ID (string identifier)","voice name (human-readable string)","text content to synthesize"],"output_types":["audio stream with selected voice characteristics","voice metadata (age, gender, accent, language support)"],"categories":["text-generation-language","memory-knowledge"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-eleven-labs__cap_3","uri":"capability://text.generation.language.real.time.streaming.audio.synthesis.with.websocket.protocol","name":"real-time streaming audio synthesis with websocket protocol","description":"Streams audio output in real-time via WebSocket connections, enabling low-latency audio delivery for interactive applications. The system chunks text input and generates audio segments progressively, allowing playback to begin before the entire synthesis completes. Uses adaptive bitrate streaming and buffer management to handle variable network conditions.","intents":["Build conversational AI applications with immediate voice feedback (< 1 second latency)","Create interactive voice assistants that respond naturally without noticeable delays","Stream long-form content (audiobooks, podcasts) without downloading entire files","Implement real-time voice dubbing for live video or streaming applications"],"best_for":["Real-time conversational AI and voice assistant developers","Interactive application builders requiring sub-second audio latency","Live streaming and video production teams needing on-demand voice synthesis"],"limitations":["WebSocket connections require persistent network; not suitable for offline-first applications","Streaming latency is 500ms-2s depending on text length and network conditions; not suitable for sub-500ms requirements","Buffer management adds complexity; requires client-side audio playback implementation","Network interruptions may cause audio gaps or require reconnection and resynthesis","Streaming mode has higher per-character cost than batch synthesis in some pricing tiers"],"requires":["WebSocket client library (native browser WebSocket API or Node.js ws library)","API key for authentication","Network connectivity with stable latency (< 100ms recommended)","Audio playback capability (Web Audio API, native audio framework, etc.)"],"input_types":["text chunks (progressive input during streaming)","SSML markup","voice ID","language specification"],"output_types":["audio chunks (MP3 or PCM format)","streaming metadata (chunk boundaries, synthesis progress)"],"categories":["text-generation-language","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-eleven-labs__cap_4","uri":"capability://text.generation.language.ssml.based.pronunciation.and.prosody.control","name":"ssml-based pronunciation and prosody control","description":"Accepts Speech Synthesis Markup Language (SSML) input for fine-grained control over pronunciation, speaking rate, pitch, volume, and pauses. Supports SSML tags like <phoneme> for IPA phonetic specification, <prosody> for pitch/rate/volume adjustment, <break> for silence insertion, and <emphasis> for stress control. The system parses SSML and applies phonetic and prosodic modifications during synthesis.","intents":["Correct mispronunciations of proper nouns, technical terms, or foreign words using IPA phonetics","Create dramatic or expressive narration with controlled pacing and emphasis","Generate specialized content (medical, technical) with appropriate pronunciation of domain-specific terminology","Fine-tune audio output for specific use cases (e.g., slower speech for accessibility, faster for efficiency)"],"best_for":["Content creators and audiobook producers requiring precise pronunciation control","Technical and medical documentation teams needing accurate terminology pronunciation","Accessibility specialists creating content for diverse audiences with different listening needs"],"limitations":["SSML support is partial; not all W3C SSML tags are implemented (e.g., <amazon:effect> tags not supported)","IPA phoneme specification requires knowledge of International Phonetic Alphabet; not user-friendly for non-linguists","Prosody adjustments are relative (e.g., +20% pitch) rather than absolute frequency specifications","Complex SSML with many nested tags may increase synthesis latency by 10-30%","SSML validation errors may cause synthesis to fail without detailed error messages"],"requires":["Valid SSML markup (XML-compliant)","Knowledge of IPA phonetics for <phoneme> tags (optional but recommended)","Understanding of supported SSML tag subset"],"input_types":["SSML-formatted text with markup tags","IPA phonetic strings for <phoneme> elements","prosody parameters (pitch, rate, volume as percentages or absolute values)"],"output_types":["audio stream with applied pronunciation and prosody modifications","SSML parsing metadata (tag validation results)"],"categories":["text-generation-language","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-eleven-labs__cap_5","uri":"capability://automation.workflow.batch.api.for.high.volume.synthesis.with.cost.optimization","name":"batch api for high-volume synthesis with cost optimization","description":"Provides a batch processing endpoint that accepts multiple synthesis requests in a single API call, optimizing for throughput and cost rather than latency. Requests are queued and processed asynchronously, with results available via polling or webhook callbacks. The batch mode uses shared model inference and resource pooling to reduce per-request overhead compared to individual REST calls.","intents":["Generate voiceovers for hundreds of video clips or audiobook chapters in a single batch job","Reduce API costs for non-time-sensitive synthesis by 30-50% through batch processing","Automate large-scale content localization across multiple languages and voices","Process synthesis requests during off-peak hours for cost optimization"],"best_for":["Content production teams with large-scale synthesis needs (100+ requests per day)","Cost-sensitive organizations prioritizing throughput over latency","Automated content pipelines and CI/CD workflows for media generation"],"limitations":["Batch processing introduces 5-30 minute latency; not suitable for real-time applications","No streaming output; entire audio file must be generated before retrieval","Batch size limits (typically 100-1000 requests per batch) require job splitting for very large workloads","Failed requests within a batch require resubmission of the entire batch or individual retry logic","Webhook callbacks may be delayed or unreliable; polling is more reliable but adds latency"],"requires":["API key with batch processing permissions","Batch request format (JSON array of synthesis requests)","Webhook endpoint (optional) or polling mechanism for result retrieval","Storage for output audio files (S3, GCS, or similar)"],"input_types":["JSON array of synthesis requests (text, voice ID, language, etc.)","batch metadata (job name, priority, callback URL)"],"output_types":["batch job ID for tracking","audio files (MP3, WAV) via download URL or webhook","batch processing status and error logs"],"categories":["automation-workflow","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-eleven-labs__cap_6","uri":"capability://text.generation.language.voice.stability.and.similarity.parameters.for.consistent.synthesis","name":"voice stability and similarity parameters for consistent synthesis","description":"Provides adjustable parameters (stability and similarity) that control how consistently a voice is reproduced across different texts. Stability controls variance in voice characteristics (higher = more consistent but less expressive), while similarity controls how closely the output matches the original voice sample during cloning. These parameters are implemented as latent space adjustments in the neural model, affecting the sampling strategy during waveform generation.","intents":["Ensure consistent voice characteristics across a series of voiceovers for a branded series","Balance between voice consistency and natural expressiveness for different content types","Fine-tune cloned voice fidelity to match original speaker while avoiding artifacts","Create subtle voice variations for different characters while maintaining recognizability"],"best_for":["Content creators and producers requiring consistent voice branding across projects","Voice cloning users optimizing for fidelity vs. naturalness trade-offs","Teams producing character-driven content with multiple voice variants"],"limitations":["Parameter effects are non-linear and voice-dependent; optimal settings require experimentation","Very high stability values (> 0.9) may produce robotic or unnatural-sounding speech","Very high similarity values during cloning may amplify artifacts from source audio","No visual feedback or preview of parameter effects; requires generating audio samples to evaluate","Parameters interact with voice selection and SSML markup in complex ways"],"requires":["Stability parameter (float, typically 0.0-1.0)","Similarity parameter (float, typically 0.0-1.0, only for cloned voices)","Voice ID or cloned voice sample"],"input_types":["stability value (0.0 = high variation, 1.0 = high consistency)","similarity value (0.0 = low fidelity, 1.0 = high fidelity to source)","text content"],"output_types":["audio stream with adjusted voice characteristics","metadata indicating applied parameter values"],"categories":["text-generation-language","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-eleven-labs__cap_7","uri":"capability://tool.use.integration.api.key.management.and.usage.quota.tracking","name":"api key management and usage quota tracking","description":"Provides account-level API key generation, rotation, and revocation with granular permission scoping (e.g., read-only, synthesis-only). Tracks usage metrics (characters synthesized, API calls, bandwidth) against quota limits in real-time via dashboard and API endpoints. Implements rate limiting (requests per minute, characters per day) with clear error responses indicating remaining quota.","intents":["Manage API credentials securely across multiple applications and team members","Monitor synthesis usage and costs to prevent unexpected billing surprises","Implement rate limiting and quota enforcement in client applications","Rotate API keys periodically for security compliance"],"best_for":["Development teams managing API access across multiple applications","Organizations with security and compliance requirements for credential management","Cost-conscious teams monitoring API usage and optimizing spending"],"limitations":["API key rotation requires updating all client applications; no graceful key deprecation period","Usage metrics have 5-15 minute reporting delay; not suitable for real-time cost tracking","Quota limits are account-level; no per-application or per-user quotas","Rate limiting is enforced at API gateway; no client-side rate limiting SDK provided","No usage alerts or notifications; requires manual dashboard monitoring"],"requires":["Eleven Labs account with API access","API key (generated via dashboard)","HTTP client for API calls with key authentication"],"input_types":["API key (string)","permission scope (synthesis, voice-cloning, etc.)","quota parameters (characters per day, requests per minute)"],"output_types":["usage metrics (characters synthesized, API calls, bandwidth)","quota status (remaining characters, requests, etc.)","rate limit headers in API responses"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-eleven-labs__cap_8","uri":"capability://text.generation.language.voice.cloning.from.short.audio.samples.with.speaker.embedding.extraction","name":"voice cloning from short audio samples with speaker embedding extraction","description":"Extracts speaker embeddings (high-dimensional vector representations of voice characteristics) from short audio samples (1-5 seconds) using a pre-trained speaker encoder network. These embeddings are then used to condition the synthesis model, enabling the generation of speech in the cloned speaker's voice. The process uses speaker-independent phoneme recognition to separate linguistic content from speaker identity, allowing the cloned voice to speak any text.","intents":["Clone a specific person's voice (e.g., CEO, brand ambassador) for consistent branded narration","Create personalized voice experiences by cloning user voices for custom applications","Preserve voice characteristics of deceased individuals or historical figures for archival or creative projects","Generate voice variants for testing without hiring multiple voice actors"],"best_for":["Content creators and brands needing consistent voice identity across projects","Personalization-focused applications (e.g., audiobook apps with user voice cloning)","Voice preservation and archival projects"],"limitations":["Cloning quality depends heavily on source audio quality; background noise, compression, or heavy accents degrade results","Minimum sample duration (1 second) may be insufficient for consistent voice characteristics; 3-5 seconds recommended","Cloned voices may exhibit artifacts when speaking phonemes not present in the source sample","Voice cloning may raise ethical and legal concerns (deepfake risks); requires user consent and disclosure","Cloned voices are less stable than preset voices; may have higher variance across different texts"],"requires":["Audio sample file (MP3, WAV, M4A, etc., 1-5 seconds duration)","Clear, noise-free audio (background noise reduces cloning quality)","Voice cloning API endpoint access","Ethical use agreement and user consent for voice cloning"],"input_types":["audio file (MP3, WAV, M4A, FLAC)","voice name (for reference)","text to synthesize in cloned voice"],"output_types":["cloned voice ID (for future synthesis)","audio stream in cloned voice","speaker embedding vector (for advanced use cases)"],"categories":["text-generation-language","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-eleven-labs__cap_9","uri":"capability://tool.use.integration.webhook.based.asynchronous.result.delivery.for.batch.and.streaming.jobs","name":"webhook-based asynchronous result delivery for batch and streaming jobs","description":"Implements webhook callbacks that notify external systems when batch synthesis jobs complete or streaming sessions end. Webhooks are HTTP POST requests sent to a user-specified endpoint with job metadata, status, and result URLs. The system implements retry logic with exponential backoff for failed webhook deliveries, and supports webhook signature verification (HMAC-SHA256) for security.","intents":["Integrate synthesis results into automated workflows without polling","Trigger downstream processing (e.g., video editing, file upload) when synthesis completes","Implement event-driven architectures for large-scale content generation pipelines","Monitor synthesis job status and errors in real-time via webhook notifications"],"best_for":["Automated content production pipelines and CI/CD workflows","Event-driven application architectures using webhooks","Teams building integration layers between Eleven Labs and other services"],"limitations":["Webhook delivery is asynchronous and not guaranteed; requires idempotency handling on receiver side","Webhook retry logic may delay notifications by minutes; not suitable for real-time applications","Webhook signature verification requires secure key management on receiver side","Failed webhooks after max retries are silently dropped; requires manual monitoring and retry mechanisms","Webhook payload size is limited (typically 1-10 MB); large result URLs must be accessed separately"],"requires":["Public HTTPS endpoint for webhook delivery","Webhook signature verification implementation (HMAC-SHA256)","Idempotent webhook handler (handles duplicate deliveries)","Webhook secret key for signature verification"],"input_types":["webhook URL (HTTPS endpoint)","webhook events (job-completed, synthesis-failed, etc.)","webhook secret (for signature verification)"],"output_types":["webhook POST request with job metadata","job status (completed, failed, in-progress)","result URLs (audio file download links)","error details (if synthesis failed)"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0}],"trust":{"score":24,"verified":false,"data_access_risk":"high","permissions":["API key from Eleven Labs account","Text input (UTF-8 encoded, typically 100-5000 characters per request)","For voice cloning: audio sample file (MP3, WAV, or similar format, 1-5 seconds duration)","Network connectivity for API calls (REST or WebSocket endpoints)","Text input in supported language (auto-detection enabled by default)","Optional explicit language code parameter to override auto-detection","Audio sample file (MP3, WAV, M4A, etc.)","Voice isolation preprocessing enabled (default or explicit parameter)","Voice ID or name from Eleven Labs voice library","API access with voice preset data"],"failure_modes":["Voice cloning quality degrades with accented or heavily processed source audio; requires clear, clean samples","Latency ranges 2-8 seconds for typical sentence synthesis depending on length and model selection","No fine-grained control over emotional delivery or speaking style beyond preset voice selections","Cloned voices may exhibit artifacts when speaking outside the phonetic range of training data","Real-time streaming has higher latency than batch processing; not suitable for sub-500ms response requirements","Code-switching (mixing languages within a single utterance) may produce artifacts or incorrect phoneme selection","Less common language variants (e.g., regional dialects) have lower synthesis quality than major languages","Automatic language detection can fail on very short inputs (< 10 characters) or mixed-script text","Regional accents within a language cannot be precisely controlled; only major regional variants are supported","Voice isolation may remove important voice characteristics (e.g., breathing, vocal fry) that contribute to speaker identity","builder identity is not verified yet","no observed match outcomes yet"],"rank_breakdown":{"adoption":0.05,"quality":0.32,"ecosystem":0.25,"match_graph":0.25,"freshness":0.75,"weights":{"adoption":0.25,"quality":0.25,"ecosystem":0.1,"match_graph":0.35,"freshness":0.05}},"observed_outcomes":{"matches":0,"success_rate":0,"avg_confidence":0,"top_intents":[],"last_matched_at":null},"maintenance":{"status":"active","updated_at":"2026-06-17T09:51:03.039Z","last_scraped_at":"2026-05-03T14:00:23.056Z","last_commit":null},"community":{"stars":null,"forks":null,"weekly_downloads":null,"model_downloads":null,"model_likes":null}},"distribution":{"claim_url":"https://unfragile.ai/submit?claim=eleven-labs","compare_url":"https://unfragile.ai/compare?artifact=eleven-labs"}},"signature":"dG5M7y3qxqQVdO2Wq7clRcWIbkYpSBSe24pHX7W9z5uidfg08dM8IFbOfWH1qxKl7J0WIC5XtZM5J2Dc6t5UAg==","signedAt":"2026-06-20T20:07:38.918Z","signedBy":"unfragile.ai","version":1},"_links":{"self":"https://unfragile.ai/api/v1/passport/eleven-labs","artifact":"https://unfragile.ai/eleven-labs","verify":"https://unfragile.ai/api/v1/verify?slug=eleven-labs","publicKey":"https://unfragile.ai/api/v1/trust-passport-public-key","spec":"https://unfragile.ai/trust","schema":"https://unfragile.ai/schema.json","docs":"https://unfragile.ai/docs"}}