Helicone vs Vapi
Helicone and Vapi are both AI Platforms tools in our directory. This side-by-side comparison covers pricing, user ratings, supported platforms, key features and open-source status so you can decide which one fits your needs.
Side-by-side comparison
| Attribute | Helicone | Vapi |
|---|---|---|
| Vendor | Helicone | Vapi |
| Rating | ★ 4.5 | ★ 4.5 |
| Pricing | Freemium | Pay-as-you-go |
| Platforms | Web, API, Proxy | API |
| Key features | Drop-in proxy for OpenAI-compatible APIs, Cost, latency and token dashboards, Response caching | Sub-second voice agent loop, BYO models (STT/LLM/TTS) or defaults, Phone numbers, transfers & IVR flows |
| Headquarters | San Francisco, USA | San Francisco, USA |
| Founded | 2022 | 2023 |
| Open source | Yes | No |
Key differences
- Helicone and Vapi share the same user rating (4.5★).
- Helicone is Freemium, while Vapi is Pay-as-you-go.
- Helicone is open source (its code is public), while Vapi is proprietary.
- Helicone runs on Web, API, Proxy; Vapi runs on API.
Frequently asked questions
Is Helicone or Vapi better?
Helicone and Vapi are rated equally (4.5★) by users, so the better choice depends on your needs — see the feature and platform comparison above.
Which is cheaper, Helicone or Vapi?
Helicone is Freemium and Vapi is Pay-as-you-go. Check each product page for current plan details.
Are Helicone and Vapi open source?
Helicone is open source, while Vapi is proprietary.