AssemblyAI renames Universal-3.5 Pro, adds 18-language diarization support
What happened
Between the Jun 29, 2026 and Jul 6, 2026 captures of Assemblyai's pricing page, Pulse recorded one change: Pre-recorded model 'Universal-3 Pro' renamed to 'Universal-3.5 Pro'; description now highlights 18-language support, native code switching, and improved speaker diarization. Price unchanged at $0.21/hr. Pulse files it as a packaging change (plan renamed) with a neutral direction. Pulse's latest capture (Aug 24, 2026) lists Voice Agent API at $4.5 per hour + $4.5 per hour, Universal-3 Pro at $0.21 per hour of audio, Universal-Streaming Multilingual at $0.15 per hour of audio, Universal-3 Pro Streaming at $0.45 per hour of audio and Universal-2 at $0.15 per hour of audio.
It lands 7 days after Assemblyai's previous change, "Assemblyai upgrades realtime STT to Universal-3.5 with 18-language support" (Jun 29, 2026). Before that Pulse recorded "Assemblyai unifies audio limits with expanded 333h free allowance" (Apr 9, 2026). Assemblyai has been tracked since 2023-11-14.
In the same window Otter, IBM, Deepgram and Google Cloud also changed their AI & Machine Learning pricing pages. Those moves are listed further down, and the Pulse Agent can compare them side by side.
- Universal-3 Pro · PlanRenamed
BeforePre-recorded model 'Universal-3 Pro'
After'Universal-3.5 Pro'
| Plan | Field | Before | After | Change |
|---|---|---|---|---|
| Universal-3 Pro | Plan | Pre-recorded model 'Universal-3 Pro' | 'Universal-3.5 Pro' | Renamed |
Values as written on Assemblyai's public pricing page in the two captures Pulse compared; where the page states no number, the cells give the wording before and after.
Evidence
The two captures Pulse comparedFull-page captures of Assemblyai's pricing page (assemblyai.com) from Jun 29, 2026 and Jul 6, 2026; the change is marked near the top of the page, where "Pre-recorded model 'Universal-3 Pro'" becomes "'Universal-3.5 Pro'".
Sign in to see the evidence
The two full-page captures with this change marked up are free with an account.
Assemblyai, the last 90 days
Full history- Aug 24, 2026packagingAssemblyai adds FAQ clarifying Voice Agent API's flat $4.50/hr rate
- Jul 6, 2026packagingAssemblyAI renames Universal-3.5 Pro, adds 18-language diarization support · this change
- Jun 29, 2026packagingAssemblyai upgrades realtime STT to Universal-3.5 with 18-language support
- Apr 9, 2026improvedAssemblyai unifies audio limits with expanded 333h free allowance
Across AI & Machine Learning in the same window
All AI & Machine Learning changes- OtterJul 4Otter: AI transcription now supports 6 languages (up from 3)
- IBMJul 3IBM Maas360: 30% first-year promotional discount removed
- DeepgramJul 2Deepgram: STT concurrency cut, model lineup restructured, promo streaming rates
- Google CloudJun 15Google Cloud Datastudio pools AI tokens per platform, adds Thinking mode
Questions about this change
Did Assemblyai raise prices in July 2026?
No list-price increase was recorded between Jun 29, 2026 and Jul 6, 2026. The change Pulse detected was a packaging change: plan renamed.
What changed on Assemblyai's pricing page between Jun 29, 2026 and Jul 6, 2026?
Universal-3 Pro plan: Pre-recorded model 'Universal-3 Pro' → 'Universal-3.5 Pro', renamed. Pulse compared the captures it took on Jun 29, 2026 and Jul 6, 2026; the before/after table above lists each item as written on the page.
How often does Assemblyai change its pricing?
Pulse recorded 2 other pricing-page changes for Assemblyai in the 90 days before this one; the previous change was "Assemblyai upgrades realtime STT to Universal-3.5 with 18-language support" on Jun 29, 2026; Assemblyai has been tracked since 2023-11-14.