Vapi
Developer platform for building voice AI agents with high-capacity, low-latency call handling.
Our editorial assessment, based on the public sources listed below. Last reviewed .
- Task rank
- #24
- Tier
- A
- Score
- 72.6
Strengths
- Handles 62M+ calls monthly with 99.99% uptime
- Omnichannel voice agent support
- Pay-as-you-go from $0.05/minute
Considerations
- Developer-oriented, needs integration work
- Telephony costs add on top of platform fees
Price
Pay-as-you-go from $0.05/minute
Shown for reference — price is not part of the score.
Score breakdown
- Performance
- 72.0
- 55% of score
- Reputation
- 70.0
- 35% of score
- Recency
- 85.0
- 10% of score
The overall score combines these sub-scores using the weights shown. How we score →
Verification status
Each field carries its own re-verification date. Amber means older than 90 days — treat those figures as stale until re-checked.
- Pricing
- Benchmark
- Reputation
- Feature list
Checked against the sources listed below.
Sources
- GTM Index: best voice AI agents 2026 (opens in a new tab)Accessed:
- Bland AI — 13 Best AI TTS Tools 2026 (opens in a new tab)Accessed:
- Inworld: best AI infrastructure for assistants 2026 (opens in a new tab)Accessed:
- Top Voice AI Agents 2026 (Deepgram) (opens in a new tab)Accessed:
- Best TTS Providers 2026 (Coval) (opens in a new tab)Accessed:
Alternatives in Voice / TTS
- #1ElevenLabsSScore 96.4Voice generation platform with a 3,000+ voice library, cross-lingual cloning, and the expressive Eleven v3 model used widely for agents, dubbing, and long-form narration.
- #2CartesiaSScore 86.6Real-time voice agent TTS built on a state-space model, with Sonic 3 hitting roughly 40–90ms time-to-first-audio and 3-second voice cloning.
- #23Retell AIAScore 72.6Voice-agent platform that wires STT, LLM, and TTS providers into production phone calls.