AX3Sonic vs Internal Cast
AX3Sonic
ax3sonic.comInternal Cast
internalcast.comSide by side
| Figure | AX3Sonic | Internal Cast |
|---|---|---|
| Price from | $2.50/mo | $30/mo |
| Free plan | — | — |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Plans published | 19 | 5 |
| Spec score · Private Podcast Platforms | 8.9 (#2) | 8.1 (#10) |
| Security | The homepage claims bank-level encryption, SSO integration, and SOC 2, GDPR, and HIPAA compliance. | The DPA describes SOC 2-compliant cloud infrastructure, encryption in transit and at rest where applicable, role-based access control, audit logging, and security monitoring. |
| Support | The maker lists [email protected] for press inquiries, partnerships, and media requests. | Support is available at [email protected]; the company says it acknowledges requests within 24 hours and typically responds within 48 hours on business days. |
Plans
AX3Sonic
- Extra Bandwidth$2.50 a month
- Extra Internal Seats$2.50 a month
- Extra Storage$2.50 a month
- +5 Narrations$4.99, paid once
- AI Credit Pack — 10 credits$5, paid once
- AI Credit Pack — 10 credits$5, paid once
- Studio Voice$9.99 a month
- Studio Voice$9.99 a month
- +15 Narrations$12.99, paid once
- AI Credit Pack — 50 credits$20, paid once
Internal Cast
- Free TrialFree
- Startup$30 a month
- Small Team$60 a month
- Big Team$120 a month
- Custom / EnterprisePriced on request
In their own words
AX3Sonic
AX3Sonic is a web-based audio publishing platform for podcasts, narrations, events, and short-form content. SonicVoice converts URLs, articles, and emails into AI narration, with an embeddable player, lead capture, and analytics. The first 5,000 characters per narration are included in the plan; longer content is billed in 1,000-character increments. SonicComposer supports AI-assisted podcast creation, collaboration, and publishing to public or private branded portals. SonicFinisher creates audiograms and captioned shorts, masters audio, and exports MP3, MP4, or WAV. AX3SONIC Studio provides browser-based audio and video recording with multi-participant sessions, guests, and screen sharing. The SonicVoice player can be embedded in WordPress, Webflow, Ghost, or Drupal, and a WordPress plugin is included. AX3Sonic advertises a seven-day free trial; the SonicVoice page says no credit card is required. The service is invite-only. Paid options include one-time narration and AI-credit packs, monthly voice plans, and an Enterprise option with custom pricing.
Internal Cast
Internal Cast turns company information into private podcast-style audio briefings for business and organizational use. Users add pasted text, text files, or PDFs, review and edit the generated script, select a voice, then produce and publish the episode. There is no episode length limit. An editorial profile can guide company terminology, naming conventions, structure, tone, and pronunciation. Episodes can be shared through a web player, private RSS, MP3 download, or the iOS app. The web player and iOS app are invite-only, while anyone with a private RSS link can subscribe, so that link should be treated like a password. The iOS player supports streaming and offline downloads, playback speed adjustment, skip and resume controls, and new-episode notifications. Voice generation supports over 30 languages. Integrations with Jira, Confluence, Slack, Notion, and other internal systems are available on request. Script generation and audio production each use 0.1 token per character; regenerations use tokens again, and unused monthly tokens do not roll over. Plans start at $30 per month, and the free trial includes 3,000 tokens without a credit card.