A

Universal 3.5 Pro

Jul 2026
AUniversal 3.5 Pro
Compare in
on
$0.004per minute
3AA Speech to text
Jul 2026released
en, es, fr +15Languages
YesSpeaker diarization
$0.004 / minPer audio minute
Universal-3.5 ProPrice covers

Ranking?

Full ranking →
1Stt Hy Fastconformer Hybrid Large Pc4.92Scribe v27.63OmniASR LLM 3B v29.54OmniASR LLM 1B v2105OmniASR LLM 7B v210
···
12OmniASR CTC 300M v227.813Universal 3.5 Pro50.414Whisper Large v357

Strong at

A
Speech & Voice#12 of 51

Benchmarks

in Speech & Voice
Open ASR · average WER5.8#16
Open ASR · AMI Cleaned WER10.6#40
Open ASR · Earnings-22 Cleaned AA Chunked WER6.1#16
Open ASR · GigaSpeech Cleaned WER7.6#14
Open ASR · LibriSpeech Clean WER1.1#14
Open ASR · LibriSpeech Other WER2.1#7
Open ASR · SPGISpeech WER1.8#10
Open ASR · URGENT 2024 WER9.1#3
Open ASR · Voice Arena Monsoon WER3.5#12
Open ASR · VoxPopuli AA Cleaned WER1.9#4
Open ASR · Earnings-22 WER10#18
Open ASR · URGENT 2024 Clean WER5.1#17
Open ASR · French FLEURS WER2.8#3
Open ASR · French MCV WER6.5#16
Open ASR · French MLS WER2.5#4
Open ASR · German FLEURS WER2.2#3
Open ASR · German MCV WER2.7#6
Open ASR · Spanish FLEURS WER2#5
Open ASR · Spanish MCV WER2.7#5
Open ASR · Spanish MLS WER2.8#7
Open ASR · Italian FLEURS WER1#3
Open ASR · Italian MCV WER2.7#9
Open ASR · Italian MLS WER6#16
Open ASR · Portuguese FLEURS WER2.8#4
Open ASR · Portuguese MLS WER4.1#7
Open ASR · Hindi Monsoon WER11.8#10
Open ASR · Dutch FLEURS WER3.4#5
Open ASR · Dutch MCV WER2.7#8
Open ASR · Dutch MLS WER4#3
Open ASR · Armenian FLEURS WER45.2#15
Open ASR · Armenian MCV WER50.4#13
AA Speech to text · Recorded audio word error rate3#14

FAQ

How much does Universal 3.5 Pro cost?›

$0.004 per minute.

Is Universal 3.5 Pro free to use?›

There is no free API; it costs $0.004 per minute.

How good is Universal 3.5 Pro, and what is it best at?›

#12 of 51 in Speech to text. Strongest at: Speech & Voice.

Is Universal 3.5 Pro better than OmniASR CTC 300M v2?›

On Open ASR · Armenian MCV WER, Universal 3.5 Pro scores 50.4 vs 27.8 — lower.

When was Universal 3.5 Pro released? Is there a newer version?›

Released 2026-07-07. It is the current version in its line.

Is Universal 3.5 Pro open source?›

No, Universal 3.5 Pro is a closed model available through an API. The closest open-weights option here is Stt Hy Fastconformer Hybrid Large Pc.

What is Universal 3.5 Pro?›

Universal 3.5 Pro is a closed speech & voice model from AssemblyAI, released Jul 2026.

What are the best alternatives to Universal 3.5 Pro?›

Whisper Large v3 (cheaper), Scribe v2 (better), Stt Hy Fastconformer Hybrid Large Pc (open weights).