vioscaleAI
Comparison

Amazon Polly vs WellSaid Labs

On the evidence we track, Amazon Polly leads this comparison with a composite score of 74/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Amazon Polly full profile →WellSaid Labs full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
★Amazon Polly74
WellSaid Labs47
Score
vioscaleAI score
Amazon Polly74 / 100medium · 73%
WellSaid Labs47 / 100low · 36%
Pricing
Free tier
Amazon Polly✓
WellSaid Labs✓
Model
Amazon Pollyfreemium
WellSaid Labscommercial
Price level
Amazon Pollylow
WellSaid Labsunknown
Starting price
Amazon Polly$4
WellSaid Labs$10
Transparent
Amazon Polly✓
WellSaid Labs✗
Integrations
Count
Amazon Polly3
WellSaid Labs2
Security
Certifications
Disclosure policy
Amazon Polly✓
WellSaid Labs–
Fedramp
Amazon Polly✓
WellSaid Labs–
Gdpr
Amazon Polly✓
WellSaid Labs✓
Hipaa
Amazon Polly✓
WellSaid Labs–
Iso27001
Amazon Polly✓
WellSaid Labs–
Pci
Amazon Polly✓
WellSaid Labs–
Soc2
Amazon Polly✓
WellSaid Labs✓
Trust center
Reliability
Status page
Amazon Polly✓
WellSaid Labs–
Market
Availability
Content
Faq
Amazon Polly7 items
WellSaid Labs5 items

Capabilities

Feature-by-feature on the axes that matter for text to speech. “-” means undocumented, not absent.

Capabilities
Voice cloning
Amazon Polly-
WellSaid Labs✓
Zero shot cloning
Amazon Polly-
WellSaid Labs-
Streaming synthesis
Amazon Polly✓
WellSaid Labs-
Ssml support
Amazon Polly✓
WellSaid Labs-
Emotion style control
Amazon Polly-
WellSaid Labs✓
On device offline
Amazon Polly✗
WellSaid Labs-
Open source
Amazon Polly✗
WellSaid Labs-
Watermarking provenance
Amazon Polly-
WellSaid Labs-
Cloning consent verification
Amazon Polly-
WellSaid Labs✓

What each one is

The product in its own terms, so the numbers below have context.

Amazon Polly

Leader

A cloud-based text-to-speech service that transforms written text into spoken audio using neural AI models. Supports multiple languages and voices with customization through markup language tags and pronunciation rules.

Independently observed

WellSaid Labs

A text-to-speech platform that creates professional voiceovers from written scripts, offering 280+ realistic voices across 50+ languages with emotional presets and pronunciation control for training, marketing, and content production.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Amazon Polly

Leader
Usage-basedFree tier

From $4.00 per 1M characters (Standard Voices). Four voice type tiers with different pricing. Free tier includes millions of monthly characters depending on voice type.

  • Standard VoicesFree
    • Standard text-to-speech voices
    • SSML support
    • Custom pronunciation lexicons
  • Neural VoicesFree
    • High-quality neural voices
    • Newscaster speaking style
    • SSML support
    • Speech Marks metadata
  • Long-Form VoicesFree
    • Long-form optimized voices
    • Extended synthesis support
    • SSML support
  • Generative VoicesFree
    • Generative voice synthesis
    • Advanced voice quality
    • Bidirectional streaming API
as of verify ↗

WellSaid Labs

from $10/moSubscriptionFree tier

From $10/mo. Free tier with 3 minutes/month; subscription plans up to Enterprise with custom pricing.

  • TrialFree
    • 3 download minutes per month
    • Curated voice actors
    • Studio tools for tone, pitch and emotional control
    • MP3 export
    • 24 kHz sample rate
  • Starter$10/mo billed annually at $120/year
    • 240 minutes/year downloaded audio
    • Unlimited generation
    • 10 projects
    • All English voices
    • Full commercial rights
    • +6 more
  • Pro$33/mo billed annually at $396/year
    • 2,160 minutes/year downloaded audio
    • Unlimited projects
    • All English voices
    • Full commercial rights
    • Caption files (.SRT, .VTT)
    • +7 more
  • Business$160/mo per user billed annually at $1,920/year
    • 2,880 minutes/year/user downloaded audio
    • Unlimited generation
    • Up to 5 seats
    • Team workspace
    • Collaborator seats
    • +8 more
  • EnterpriseContact sales
    • Custom number of seats
    • All languages and accents
    • Translation feature
    • Up to 96 kHz sample rate
    • Priority support
    • +7 more
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Amazon Polly✓
WellSaid Labs✓
CLI
Amazon Polly✓
WellSaid Labs✗
Deployment
Cloud / SaaS
Amazon Polly✓
WellSaid Labs✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Amazon Polly

Leader
5 total
  • Amazon Connect
  • Amazon Chime SDK
  • AWS Chime SDK
  • Alexa Skills
  • Amazon Chime
Independently observed

WellSaid Labs

2 total
  • Adobe Premiere Pro
  • Adobe Express
Independently observed
Still deciding?

Amazon Polly or WellSaid Labs: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.