Alternatives to ThunderPhone
Other voice agents, ordered by how many use cases, then industries, they share with ThunderPhone.
How we pick: no paid placement; facts come from vendor pages.
Side by side
Every cell comes from the listing; "Not published" means the vendor's pages did not state it when checked.
| Agent | Pricing model | Pricing from | Setup | Access | Human review | Open source | Integrations | Checked on |
|---|---|---|---|---|---|---|---|---|
| ThunderPhone | Usage-based | 2¢/minChecked 19 October 2026 | Needs configuration | Web app, API | Optional review | No | Not published | 19 October 2026 |
| Reception by ElevenAgentsElevenLabs | Subscription | Not published | Works instantly | Web app | Autonomous | No | 3 | 19 October 2026 |
| Bland | Usage-based | $0.14/minChecked 23 September 2026 | Needs configuration | Web app, API | Autonomous | No | 11 | 23 September 2026 |
| Cresta AI Agent | Not published | Not published | Needs configuration | Web app | Autonomous | No | 8 | 23 September 2026 |
| ElevenAgentsElevenLabs | Freemium | $6/moChecked 23 September 2026 | Needs configuration | Web app, API | Autonomous | No | 9 | 23 September 2026 |
| Observe.AI | Not published | Not published | Needs configuration | Web app | Autonomous | No | Not published | 23 September 2026 |
| Synthflow | Quote on request | $30,000/yrChecked 23 September 2026 | Needs configuration | Web app, API | Autonomous | No | 9 | 23 September 2026 |
| Vapi | Usage-based | $0.05/minChecked 23 September 2026 | Developer setup | Web app, API | Autonomous | No | 14 | 23 September 2026 |
| Assort Health | Not published | Not published | Needs configuration | Web app | Autonomous | No | 1 | 23 September 2026 |
| Dialzara | Subscription | $29/moChecked 23 September 2026 | Needs configuration | Web app | Autonomous | No | Not published | 23 September 2026 |
| Goodcall | Subscription | $79 per agent/moChecked 23 September 2026 | Needs configuration | Web app | Autonomous | No | 1 | 23 September 2026 |