AssemblyAI
7.5/10★ 3.7 (1)APIs for real-time and pre-recorded speech-to-text, understanding, and voice agents.
✓ Free trial⚠ Not published⚠ Not published
APIs for real-time and pre-recorded speech-to-text, understanding, and voice agents.
Extracted from AssemblyAI's own site and policies — “Not published” means we looked and it isn't there.
Free trial
✓ Free trial
Starting price
Free plan
Free sign-up tier plus usage-based (per-minute) pricing; exact rates not captured in sources
Refund policy
⚠ Not published
Privacy & your data
⚠ Not published
Support
Not stated
Company
Founded 2017 · HQ: San Francisco, USA
Best for: Developers and enterprises building voice/speech features such as transcription, notetakers, and voice agents
Standout: Offers both cloud API and self-hosted deployment, with the latest Universal-3.5 Pro model for real-time and pre-recorded audio
Top-scored alternatives in Speech-to-Text & Voice AI APIs.
| Tool · TrustScore | Free trial | From | Refund | Privacy | |
|---|---|---|---|---|---|
| ✓ Free trial | Free plan | ⚠ Not published | ⚠ Not published | Compare → | |
| ✓ Free trial | — | ✓ 30 days | Policy published | Compare → | |
| ✓ Free trial · 3 free renders | Free plan | ✓ Money-back guarantee | ⚠ Not published | Compare → | |
| ✓ Free trial · no card | $15/mo | ✓ 7 days | ⚠ Not published | Compare → | |
| ✓ Free trial | $44/mo | ✓ 14 days | Policy published | Compare → |
Our 5-point vetting, with evidence quotes from their own pages.
—Money-back guarantee verified
✓Free trial confirmed
—Reachable human support
✓No fine-print return traps
✓No unrealistic marketing claims
Vetted 2026-07-13 · How we compare →