OpenAIAssemblyAIAudio matchupSpeech to text
GPT-Realtime-Whispervs.Universal-3.6 Pro Realtime
Which model is better?
Universal-3.6 Pro Realtime is slightly ahead in independent tests, but the lead is not certain.
Independent testsCoval
GPT-Realtime-Whisper0 of 1
Universal-3.6 Pro Realtime0 of 1
Popularityout of 100
GPT-Realtime-Whisperahead34
Universal-3.6 Pro Realtime0
Weights and access
GPT-Realtime-Whisperproprietary
Universal-3.6 Pro Realtimeproprietary
Priceverbatim from the provider
GPT-Realtime-Whisper$0.017 per audio minute
Universal-3.6 Pro Realtime$0.45 per hour of audio; volume discounts available
Pick GPT-Realtime-Whisper for
more popular
Pick Universal-3.6 Pro Realtime for
leaning Coval
Shared tests
Independent evaluators and leaderboards only, the newest shared snapshot per evaluator. With 95 % ranges a lead counts when they do not overlap; for hit rates, when it holds in a 95 % test. Without any uncertainty figure at most “slightly ahead”.
Coval
Universal-3.6 Pro Realtime slightly aheadCoval Word Error Rate (WER) per-sample mean
GPT-Realtime-Whisper4.5 %
Universal-3.6 Pro Realtime2.5 %
lower is better, as of November 2, 2026
Source · latest November 2, 2026
All data side by side
Prices are verbatim from the provider, because audio models bill per minute, character or token.
| GPT-Realtime-Whisper | Universal-3.6 Pro Realtime | |
|---|---|---|
| Task | Speech to text | Speech to text |
| Developer | OpenAI | AssemblyAI |
| Status | Active | Active |
| Released | n/a | September 29, 2026 |
| Weights | proprietary | proprietary |
| Runs locally | no | no |
| Price | $0.017 per audio minute | $0.45 per hour of audio; volume discounts available |
| Popularity (out of 100) | 34 | 0 |
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