# Amazon Polly vs Azure AI Speech

**Leader by Vioscale score:** Amazon Polly

| Attribute | Amazon Polly | Azure AI Speech |
|---|---|---|
| **Vioscale score** | 59.9 (61% (medium)) | 53.3 (51% (medium)) |
| deployment.options | `{"cloud":true}` | `{"cloud":true}` |
| description.long | Amazon Polly is a managed cloud service that synthesizes speech from text using neural networks and generative voice technology. It offers multiple voice options and languages, integrates through APIs, and supports various audio formats for use in applications and services. | - |
| integrations.count | 2 | - |
| integrations.list | `[{"name":"Amazon Connect"},{"name":"Amazon Chime SDK"}]` | - |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"web":true}` | `{"cli":true,"web":true}` |
| pricing | `{"type":"usage","plans":[{"free":false,"name":"Standard Voices","summary":"$4.00 per 1M characters","components":[{"per":{"qty":1000000,"unit":"characters"},"kind":"metered","amount":4,"currency":"USD"}],"description":"Basic quality voices with lower latency","contactSales":false},{"free":false,"name":"Neural Voices","summary":"$16.00 per 1M characters","components":[{"per":{"qty":1000000,"unit":"characters"},"kind":"metered","amount":16,"currency":"USD"}],"description":"High-quality neural synthesis voices","contactSales":false},{"free":false,"name":"Long-Form Voices","summary":"$100.00 per 1M characters","components":[{"per":{"qty":1000000,"unit":"characters"},"kind":"metered","amount":100,"currency":"USD"}],"description":"Optimized for longer text passages and documents","contactSales":false},{"free":false,"name":"Generative Voices","summary":"$30.00 per 1M characters","components":[{"per":{"qty":1000000,"unit":"characters"},"kind":"metered","amount":30,"currency":"USD"}],"description":"Generative voice synthesis with custom voice options","contactSales":false}],"summary":"From $4.00 per 1M characters. Free tier available (5M characters/month for Standard voices).","currency":"USD","freeTier":true,"sourceUrl":"https://aws.amazon.com/polly/pricing/","retrievedAt":"2026-08-19T22:02:51.594Z","startingPrice":{"unit":"characters","amount":4,"currency":"USD"},"billingPeriods":["month"]}` | `{"type":"subscription","summary":"Free tier available; 20+ services free for 12 months, 65+ services free always, $200 credit in first 30 days","currency":"USD","freeTier":true,"sourceUrl":"https://azure.microsoft.com/en-us/pricing/calculator/","retrievedAt":"2026-08-31T15:11:07.113Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | freemium |
| pricing.price_level | low | low |
| pricing.starting_price | `{"amount":4,"currency":"USD"}` | - |
| pricing.transparent | yes | - |
| reliability.status_page | yes | yes |
| security.certifications | - | `[{"name":"100+ compliance offerings","status":"active"}]` |
| security.disclosure_policy | yes | - |
| security.fedramp | yes | - |
| security.gdpr | yes | yes |
| security.hipaa | yes | - |
| security.iso27001 | - | yes |
| security.pci | yes | - |
| security.soc2 | - | yes |
| security.trust_center | - | https://azure.microsoft.com/en-us/explore/trusted-cloud/ |

## Capabilities (AI Voiceover)

| Capability | Amazon Polly | Azure AI Speech |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Architecture model | - | - |
| Zero shot instant voice cloning from short samples | - | - |
| Emotional prosody directing anger whisper joy | - | - |
| Speech to speech sts acting and accent transfer | - | - |
| Automatic translated dubbing retaining original voice | - | - |
| Sub 500ms ultra low latency streaming API available | - | - |
| Phoneme level pronunciation dictionary overrides | - | - |
| Multi speaker timeline editor for conversations | - | - |
| Voice isolation and background noise removal | - | - |
| Watermarking and AI generation detection safety | - | - |
| SOC2 type ii | - | - |
| ISO 27001 | - | - |
| Pricing model | - | - |

*Source: Vioscale. Generated 2026-09-01T17:23:02.544Z. "-" = undocumented, not absent.*