Conversation Intelligence
A
AssemblyAI
Speech AI APIs — Universal-2 (99 langs), Universal-3 Pro, and LeMUR for voice agents and contact centers.
Best-in-benchmark STT accuracy in 2026. Universal-3 Pro beats Deepgram and OpenAI on WER. LeMUR adds deep post-call audio understanding. Pure API — no UI, no turnkey product.
Pricing
$0.0025 /min
STT: Universal-3 Pro $0.21/hr; Universal-2 $0.15/hr. Streaming: Universal-3 Pro $0.45/hr; Universal-Streaming $0.15/hr. Audio Intelligence add-ons $0.02–$0.15/hr. $50 free credit; no credit card required. No contracts or throttles.
Free tier
Usage-based Custom enterprise
View pricing page →
Verified April 2026
Capabilities
| Capability | AssemblyAI |
|---|---|
| Transcription | ✓ |
| Summarization | ✓ |
| Sentiment Analysis | ✓ |
| Real-Time Agent Assist | ✗ |
| Autonomous Voice Agent | ✗ |
| Virtual Agent (Chat) | ✗ |
| Conversation Intelligence | ✓ |
| Automated QA | ✗ |
| Intelligent Routing | ✗ |
| Predictive Dialer | ✗ |
| Voice Cloning | ✗ |
| Multilingual | ✓ |
| Coaching Workflows | ✗ |
| Workforce Management | ✗ |
Median voice latency: 300ms source
Compliance & Security
Data residency: US, EU
Integrations
Telephony
twilio
AI Models
openaianthropicgoogle vertexmeta llama
Other
LiveKitPipecatVapiZapierMake
API documented
Reviews & Recognition
Alternatives to AssemblyAI
Frequently asked questions about AssemblyAI
- What is AssemblyAI?
- Best-in-benchmark STT accuracy in 2026. Universal-3 Pro beats Deepgram and OpenAI on WER. LeMUR adds deep post-call audio understanding. Pure API — no UI, no turnkey product.
- How much does AssemblyAI cost?
- AssemblyAI starts at $0.0025/min. STT: Universal-3 Pro $0.21/hr; Universal-2 $0.15/hr. Streaming: Universal-3 Pro $0.45/hr; Universal-Streaming $0.15/hr. Audio Intelligence add-ons $0.02–$0.15/hr. $50 free credit; no credit card required. No contracts or throttles. (pricing verified April 2026).
- What security and compliance certifications does AssemblyAI have?
- AssemblyAI is compliant with SOC 2 Type II, HIPAA, PCI DSS, and GDPR. A Business Associate Agreement (BAA) is available for healthcare deployments.
- What channels does AssemblyAI support?
- AssemblyAI supports voice.
- What are the top alternatives to AssemblyAI?
- Alternatives to AssemblyAI include Deepgram, Elevenlabs, Cartesia, and Google Contact Center Ai. See the alternatives section above for full profiles of each.