# Free tools

Free tools for AI voice agent platforms and vendors. You need no account.

- [AI voice agent cost estimator](https://voiceagents.fyi/tools/voice-agent-cost-estimator.md): Estimate the monthly cost of an AI phone agent from your calls, call length and a per-minute rate, with list prices from Vapi, Retell AI and Bland AI.
- [Which AI voice agent type fits you?](https://voiceagents.fyi/tools/voice-agent-platform-selector.md): Answer seven questions about your calls and team to find the right type: AI receptionist, voice agent platform, contact-centre AI, outbound tool, voice API or open-source framework.