Structured entry data for human tools, AI systems and machine clients.
{
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],
"@type": "Thing",
"identifier": "ENT-00000143",
"name": "AssemblyAI",
"alternateName": [],
"additionalType": {
"category": "AI Systems",
"type": "AI Assistant",
"subtype": "",
"lxkeysEntity": false
},
"description": "AssemblyAI is a speech AI platform and API provider for transcription, realtime voice systems and audio intelligence, with Universal-3.5 Pro as its 2026 flagship speech-to-text line.",
"creator": "AssemblyAI",
"url": "https://lxkeys.world/entry.php?id=ENT-00000143&lang=en",
"sameAs": "https://www.assemblyai.com",
"image": "",
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"kind": "AI Systems",
"type": "AI Assistant",
"subtype": "",
"classification": "General AI Assistant",
"organization": "AssemblyAI",
"originContext": "Public AI and cultural record",
"firstPublicAppearance": "2017",
"currentStatus": "Active",
"documentationStatus": "Connected",
"documentationIndex": {
"total": 86,
"documentation": 25,
"evidence": 25,
"structure": 25,
"relationships": 11,
"level": "Level V Persistent"
},
"lxCalendarium": {
"start_date_utc": "2023-04-01",
"created_utc": "2026-06-16T00:00:00+00:00",
"created_dypclt": "D-0 Y-2 P-3 C-3 L-21 T-3",
"updated_utc": "2026-09-08T04:32:11+00:00",
"updated_dypclt": "D-0 Y-2 P-3 C-3 L-21 T-3"
},
"facts": [],
"capabilities": [
"Pre-recorded speech-to-text",
"Realtime speech-to-text for voice agents",
"Native multilingual code-switching in Universal-3.5 Pro",
"Speaker diarization",
"Contextual prompting and conversation context",
"Sync API for finished transcripts",
"LLM Gateway and conversation-intelligence workflows"
],
"limitations": [
"Accuracy varies with audio quality, language, accents and domain terminology.",
"Realtime latency and transcription quality depend on network and integration conditions.",
"Medical or regulated uses require domain-specific validation and compliance review."
],
"tags": [
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"Conversational AI",
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],
"timeline": [
{
"date": "2017",
"title": "Initial public launch",
"description": "AssemblyAI entered the documented public record in 2017. This event is retained at the precision supported by the Entry’s reviewed source history.",
"source_url": "https://www.assemblyai.com",
"verification_status": "source_backed_official"
},
{
"date": "2026-07-07",
"title": "Universal-3.5 Pro released",
"description": "AssemblyAI released Universal-3.5 Pro as its flagship speech-to-text model with native code-switching, improved diarization and expanded language support.",
"source_url": "https://www.assemblyai.com/collection/releases",
"verification_status": "source_backed_official"
},
{
"date": "2026-07-14",
"title": "Sync API introduced",
"description": "AssemblyAI introduced the Sync API for receiving finished transcripts in a single API call.",
"source_url": "https://www.assemblyai.com/collection/releases",
"verification_status": "source_backed_official"
},
{
"date": "2026-08-26",
"title": "Qwen3.5 4B added to LLM Gateway",
"description": "AssemblyAI added an optimized Qwen3.5 4B model to its LLM Gateway for fast rewrite tasks in voice products.",
"source_url": "https://www.assemblyai.com/blog",
"verification_status": "source_backed_official"
}
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"source_type": "Official Release Notes",
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{
"label": "AssemblyAI blog",
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"source_type": "Official Product Updates",
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