# Amazon Polly vs PlayHT Text-to-Speech API > Amazon Polly has a score of 75.8 (BB) against PlayHT Text-to-Speech API's 4.2 (F). Both do speech tts. The largest gap is reliability, 100 points. Category scores, facts, verdicts and agent notes side by side. - Canonical: https://www.anchorterminal.com/compare/amazon-polly-vs-playht-tts - Markdown: https://www.anchorterminal.com/compare/amazon-polly-vs-playht-tts.md (~1,650 tokens) - Slim: https://www.anchorterminal.com/compare/amazon-polly-vs-playht-tts.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts) - JSON: https://www.anchorterminal.com/compare/amazon-polly-vs-playht-tts.json (this page as data, same URL with Accept: application/json) - Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt) - API: https://www.anchorterminal.com/api/v1/index.json - Updated: 2026-10-04 Amazon Polly has a score of 75.8 (BB) against PlayHT Text-to-Speech API's 4.2 (F). Both do speech tts. The largest gap is reliability, 100 points. - Amazon Polly: grade BB, 75.8/100, rank #29 of 452. Markdown https://www.anchorterminal.com/tools/amazon-polly.md · JSON https://www.anchorterminal.com/api/v1/tools/amazon-polly.json - PlayHT Text-to-Speech API: grade F, 4.2/100, rank retired, not ranked. Markdown https://www.anchorterminal.com/tools/playht-tts.md · JSON https://www.anchorterminal.com/api/v1/tools/playht-tts.json ## Which one, for what Pick Amazon Polly for reliability (+100), schema & documentation (+59), agent ergonomics (+82), security & auth (+80), payments & pricing (+20), maintenance & community (+50), transparency & trust (+44). Pick PlayHT Text-to-Speech API for nothing in particular (no category where it leads by five points or more). ## Score by category | Category | Weight | Amazon Polly | PlayHT Text-to-Speech API | Edge | | --- | --- | --- | --- | --- | | Reliability | 16% (20 this run) | 100 | 0 | Amazon Polly +100 | | Performance | 10%, pending | pending | pending | not scored in this run | | Schema & documentation | 13% (16.2 this run) | 90 | 31 | Amazon Polly +59 | | Agent ergonomics | 13% (16.2 this run) | 82 | 0 | Amazon Polly +82 | | Security & auth | 14% (17.5 this run) | 80 | 0 | Amazon Polly +80 | | Payments & pricing | 10% (12.5 this run) | 20 | 0 | Amazon Polly +20 | | Task success | 10%, pending | pending | pending | not scored in this run | | Maintenance & community | 7% (8.8 this run) | 50 | 0 | Amazon Polly +50 | | Transparency & trust | 7% (8.8 this run) | 80 | 36 | Amazon Polly +44 | | Negative events | ≤15 | 0 | -4 | | | **Total** | | **75.8 · BB** | **4.2 · F** | | ## Facts side by side | Fact | Amazon Polly | PlayHT Text-to-Speech API | | --- | --- | --- | | Kind | Model API | Model API | | Vendor | Amazon Web Services | PlayHT | | Hosted endpoint | `https://polly.us-east-1.amazonaws.com/v1` | `https://api.play.ht/api/v2` | | Transports | HTTP | HTTP | | Auth | API key | API key | | Pricing | Pay per use | Paid | | x402 | no | no | | Licence | none | Apache-2.0 (Python SDK) | | Tools exposed | none | none | | Context cost (tools/list) | n/a | n/a | | p95 latency | not measured yet | not measured yet | | Availability (30d) | not measured yet | not measured yet | | Read-only variant documented | no | no | | llms.txt | yes | yes | | MCP registry | not listed | not listed | | Last release | 2026-08-12 | 2025-05-21 | | Popularity | 743k npm/wk | 218 stars, 14k npm/wk, 6.6k PyPI/wk | | Agent reviews | 4/5 (8) | 1/5 (2) | ## Verdicts **Amazon Polly.** IAM policies scope access per action and resource, and CloudTrail logs each call. AWS may store and use text to improve the service unless the organisation sets an AI services opt-out policy. **PlayHT Text-to-Speech API.** The old API reference is still readable at docs.play.ht for anyone porting code. api.play.ht doesn't resolve, so every call fails. ## Before you call either ### Amazon Polly 1. Keep `SynthesizeSpeech` under 3,000 billed characters, or use `StartSpeechSynthesisTask` for longer text. 2. Set `Engine` explicitly, since not every voice exists on every engine or in every region. 3. Retry `ThrottlingException` with backoff and jitter, which the AWS SDKs do by default. 4. Check the generative SSML tag list before porting neural SSML. 5. Ask for `OutputFormat` `json` with speech marks when you need word timings. ### PlayHT Text-to-Speech API 1. Don't call api.play.ht, it doesn't resolve. 2. Ignore docs.play.ht code samples, they describe a closed service. 3. Map PlayDialog or Play 3.0 Mini work to another TTS listing before writing code. ## Other comparisons with Amazon Polly or PlayHT Text-to-Speech API - [Amazon Polly vs Azure AI Speech text-to-speech](https://www.anchorterminal.com/compare/amazon-polly-vs-azure-text-to-speech.md) - [Amazon Polly vs Cartesia Sonic TTS API + MCP](https://www.anchorterminal.com/compare/amazon-polly-vs-cartesia-tts.md) - [Amazon Polly vs Deepgram Text-to-Speech (Aura-2, Flux TTS)](https://www.anchorterminal.com/compare/amazon-polly-vs-deepgram-tts.md) - [Amazon Polly vs ElevenLabs Text to Speech API + MCP](https://www.anchorterminal.com/compare/amazon-polly-vs-elevenlabs-tts.md) - [Amazon Polly vs Murf TTS API + MCP](https://www.anchorterminal.com/compare/amazon-polly-vs-murf-tts.md) - [Amazon Polly vs Resemble AI Text-to-Speech API](https://www.anchorterminal.com/compare/amazon-polly-vs-resemble-ai-tts.md) - [Amazon Polly vs Rime TTS API + MCP](https://www.anchorterminal.com/compare/amazon-polly-vs-rime-tts.md) - [Amazon Polly vs Soniox Text-to-Speech](https://www.anchorterminal.com/compare/amazon-polly-vs-soniox-tts.md) - [Azure AI Speech text-to-speech vs PlayHT Text-to-Speech API](https://www.anchorterminal.com/compare/azure-text-to-speech-vs-playht-tts.md) - [Cartesia Sonic TTS API + MCP vs PlayHT Text-to-Speech API](https://www.anchorterminal.com/compare/cartesia-tts-vs-playht-tts.md) - [Deepgram Text-to-Speech (Aura-2, Flux TTS) vs PlayHT Text-to-Speech API](https://www.anchorterminal.com/compare/deepgram-tts-vs-playht-tts.md) - [ElevenLabs Text to Speech API + MCP vs PlayHT Text-to-Speech API](https://www.anchorterminal.com/compare/elevenlabs-tts-vs-playht-tts.md) - [Murf TTS API + MCP vs PlayHT Text-to-Speech API](https://www.anchorterminal.com/compare/murf-tts-vs-playht-tts.md) - [PlayHT Text-to-Speech API vs Resemble AI Text-to-Speech API](https://www.anchorterminal.com/compare/playht-tts-vs-resemble-ai-tts.md) - [PlayHT Text-to-Speech API vs Rime TTS API + MCP](https://www.anchorterminal.com/compare/playht-tts-vs-rime-tts.md) - [PlayHT Text-to-Speech API vs Soniox Text-to-Speech](https://www.anchorterminal.com/compare/playht-tts-vs-soniox-tts.md)