Universal-3.5 Pro
AssemblyAI highest-accuracy pre-recorded speech-to-text model with 18 languages, native code switching and contextual prompting.
Specs
- Context
- —
- Max output
- —
- Input price
- $0.21/ hour
- Output price
- —
- Released
- 2026-07-07
Context
- Not published
Pricing · USD / hour
- Input
- $0.21
- Output
- —
- Cache read
- —
- Cache write
- —
Modalities
- Input
- Audio
- Output
- Text
API
- API types
Reasoning
- Not published
Info
- Status
- Active
- Released
- 2026-07-07
- Knowledge cutoff
- —
Features
- Not published
How to call
1 provider
assemblyaimodel = universal-3-5-pro
audio
POSThttps://api.assemblyai.com/v2/transcript
JSON
Standard format
{
"id": "universal-3-5-pro",
"object": "model",
"created": 1783382400,
"owned_by": "assemblyai",
"name": "Universal-3.5 Pro",
"api": {
"types": [
"audio"
]
},
"limits": {
"context": null,
"input": null,
"output": null
},
"modalities": {
"input": [
"audio"
],
"output": [
"text"
]
},
"reasoning": {
"supported": null,
"efforts": []
},
"pricing": {
"currency": "USD",
"unit": "hour",
"input": 0.21,
"output": null,
"cache_read": null,
"cache_write": null
},
"features": [],
"info": {
"status": "active",
"release_date": "2026-07-07",
"knowledge_cutoff": null,
"description": "AssemblyAI highest-accuracy pre-recorded speech-to-text model with 18 languages, native code switching and contextual prompting.",
"docs": "https://www.assemblyai.com/docs/pre-recorded-audio/select-the-speech-model",
"verified_at": "2026-10-11"
}
}Official sources
4
Model selection | AssemblyAI Docswww.assemblyai.com2026-10-11Models | AssemblyAI Docswww.assemblyai.com2026-10-11Pricing | AssemblyAIwww.assemblyai.com2026-10-11Universal-3.5 Pro: native code switching, our most accurate speaker diarization yet, and expanded language support | AssemblyAIwww.assemblyai.com2026-10-11