AssemblyAI
Transcription plus summarisation, topic detection and speaker labels for developers.
Full AssemblyAI record →Head to head
AssemblyAI vs MiniMax Speech
AssemblyAI (AssemblyAI) and MiniMax Speech (MiniMax) both sit in Audio. AssemblyAI is the cheaper entry point at Free tier · from $0.15/1M tok. MiniMax Speech shipped more tracked changes in the last 30 days (9 vs 8). Every value below comes from the latest crawl of the vendors' own pages.
| Attribute | AssemblyAI AssemblyAI | MiniMax Speech MiniMax |
|---|---|---|
| Segment | Audio | Audio |
| Version | Universal-3.6 Pro Realtime | 2.8 |
| Entry cost | Free tier · from $0.15/1M tok | from $30/mo |
| Pricing tiers | Free Credits free · Universal-2 Async STT $0.15 · Universal-Streaming English / Multilingual $0.15 · Universal-3.5 Pro Async STT $0.21 · Universal-3.6 Pro Realtime STT $0.45 · Text-to-Speech (AssemblyAI-TTS-1) $15 | Free free · API per 1M chars $30 |
| Model stack | AssemblyAI-TTS-1 · Claude · Claude 4.6 Sonnet · Claude 4.8 Opus · Gemini 2.5 Pro · Gemini 3.5 Flash · GPT-5.5 · Qwen3 Next 80B A3B · u3-rt-pro · Universal-2 · universal-3-6-pro · universal-3-pro · Universal-3.5 Pro · Universal-3.5 Pro Realtime · Universal-3.6 Pro Realtime · Universal-Streaming English · Universal-Streaming Multilingual | MiniMax Music 3.0 · MiniMax Speech 2.8 · Speech 2.8 |
| Context window | n/a | n/a |
| Public API | ||
| Routes models | ||
| Changes / 30d | 8 | 9 |
| Origin | Global | China |
| Capabilities | Speaker diarization, Summarisation, Topic detection, PII redaction, LeMUR framework, Pre-recorded STT, Real-time STT, Voice Agent API | Voice cloning, 30+ languages, Emotion control, Streaming, Speech Generation, Audio Generation, API, speech generation |
MiniMax Speech
MiniMax's speech stack covers 30+ languages with fast cloning from short samples.
Full MiniMax Speech record →