AssemblyAI launches Voice Agent API and restructures pricing into six product tabs
AssemblyAI added a Voice Agent API at $4.50/hr ($0.075/min), broke Guardrails out as a priced family, and reorganized its pricing page into six product tabs while keeping async rates flat.
Pricing page grouped async ($0.15/$0.21/hr), streaming (incl. Whisper-Streaming $0.30/hr) and Speech Understanding add-ons; no standalone Voice Agent product.
Six product tabs: Pre-recorded STT, Realtime STT, Voice Agent ($4.50/hr / $0.075/min), Speech Understanding, Guardrails, LLM Gateway. Realtime swaps Whisper-Streaming for Universal-Streaming Multilingual ($0.15/hr); Medical Mode and Keyterms/Prompting add-ons added; async unchanged.
Proof of change
AssemblyAI's pricing pages, as we captured them on two dates.
Showing the whole page as captured — scroll either panel, or open it at full size.
Show 1 other page we compared
Showing the whole page as captured — scroll either panel, or open it at full size.
- 7 pages had no counterpart in the earlier capture and are not shown.
Both images are our own captures, taken on the dates shown. The pixels are unmodified — nothing is retouched, and where a region is highlighted the marker is drawn over the image, not into it. Open either capture to see it at full resolution.
AssemblyAI reorganized its pricing page into six product tabs and shipped a standalone Voice Agent API priced at $4.50/hr ($0.075/min) — a proprietary end-to-end voice stack built on its Realtime Speech-to-Text API.
Base async transcription rates are unchanged (Universal-2 $0.15/hr, Universal-3.5 Pro $0.21/hr). The realtime lineup dropped Whisper-Streaming and added Universal-Streaming Multilingual ($0.15/hr) alongside Universal-3.5 Pro Realtime ($0.45/hr). Guardrails is now a distinct priced family (Profanity Filtering $0.01/hr, PII Audio Redaction $0.05/hr, PII Text Redaction $0.08/hr, Content Moderation $0.15/hr), and pre-recorded add-ons gained Medical Mode ($0.15/hr) and Keyterms Prompting / Prompting ($0.05/hr). The LLM Gateway now surfaces explicit per-model token rates (e.g. GPT-5.5 $5/$30 per 1M, Claude 4.8 Opus $5/$25 per 1M).
Pricing page restructured into six product tabs (Pre-recorded STT, Realtime STT, Voice Agent, Speech Understanding, Guardrails, LLM Gateway). New Voice Agent API listed at $4.50/hr ($0.075/min). Async unchanged ($0.15 Universal-2, $0.21 Universal-3.5 Pro). Realtime lineup swapped Whisper-Streaming for Universal-Streaming Multilingual ($0.15/hr) alongside Universal-3.5 Pro Realtime ($0.45/hr). Guardrails broken out as a priced family (Profanity Filtering $0.01/hr → Content Moderation $0.15/hr); Medical Mode ($0.15/hr) and Keyterms/Prompting ($0.05/hr) added as pre-recorded add-ons.