01 Cartesia
Low-latency voice AI platform behind the Sonic text-to-speech model, built for real-time agents
AI Audio & Music from $0 free tier: yes Verified JUL 5, 2026
Gladia alternatives
5 alternatives compared · prices last verified Jul 18, 2026 · how we verify
Cartesia is the top Gladia alternative in our directory: it covers the same category (AI Audio & Music), starts at $0, and has a free tier. All 5 alternatives below are compared on pricing verified against the official pricing pages, on the dates shown.
Ranked by category overlap with Gladia, free-tier availability, then lowest verified starting price — computed from our verified data, never sponsorships.
Gladia alternatives compared
| Alternative | Category | Starting price | Free tier | Price verified |
|---|---|---|---|---|
| Cartesia | AI Audio & Music | $0 | yes | Jul 5, 2026 |
| Deepgram | AI Audio & Music | $0 | yes | Jul 5, 2026 |
| Speechmatics | AI Audio & Music | $0.129/hr | yes | Jul 18, 2026 |
| AssemblyAI | AI Audio & Music | $0.15/hr | yes | Jun 23, 2026 |
| ElevenLabs | AI Audio & Music | $6/mo | yes | Jul 3, 2026 |
Each alternative, in brief
02 Deepgram
Developer-first voice AI API for speech-to-text, text-to-speech, and real-time voice agents
AI Audio & Music from $0 free tier: yes Verified JUL 5, 2026
03 Speechmatics
Speech-to-text API with real-time and batch transcription across 56+ languages, plus text-to-speech and voice agent endpoints
AI Audio & Music from $0.129/hr free tier: yes Verified JUL 18, 2026
04 AssemblyAI
Voice AI API for developers: speech-to-text, speaker diarization, audio intelligence, and LLM-over-audio with per-hour usage billing
AI Audio & Music from $0.15/hr free tier: yes Verified JUN 23, 2026
05 ElevenLabs
AI voice platform for text-to-speech, voice cloning, and conversational agents in 70+ languages
AI Audio & Music from $6/mo free tier: yes Verified JUL 3, 2026
When to stay with Gladia
Documented strengths from our Gladia review — switching isn't always the right call:
- Core capabilities are bundled into the per-hour rate rather than sold as separate line items — diarization, language detection, and all 100+ languages are included on the entry plan
- The 10-hour monthly free allowance renews rather than expiring as a one-off trial, and needs no credit card
- Starter is genuinely self-serve at 30 concurrent real-time and 25 concurrent async requests, which is enough concurrency to run a small production workload without talking to sales