# Inworld Realtime TTS-2 vs Resemble AI Text-to-Speech API (slim)

> Inworld Realtime TTS-2 scores 58.3 (C) to Resemble AI Text-to-Speech's 50.3 (D) for text-to-speech. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/inworld-tts-vs-resemble-ai-tts.md (~2,600 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/inworld-tts-vs-resemble-ai-tts.json · canonical https://www.anchorterminal.com/compare/inworld-tts-vs-resemble-ai-tts
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-31
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Inworld Realtime TTS-2 scores 58.3 (C) on agent readiness against Resemble AI Text-to-Speech API's 50.3 (D), and leads in 4 of 7 scored categories. Resemble AI Text-to-Speech API leads on reliability and schema & documentation. Both do text-to-speech.

- Inworld Realtime TTS-2: C 58.3, rank #687 of 1243 · https://www.anchorterminal.com/tools/inworld-tts.min.md
- Resemble AI Text-to-Speech API: D 50.3, rank #941 of 1243 · https://www.anchorterminal.com/tools/resemble-ai-tts.min.md
- Inworld Realtime TTS-2, good for Agents that generate replies or stories at runtime and want delivery chosen from context without writing tags, and for per-message or pre-generated audio. Ahead on Agent ergonomics, 68 against 46; Security & auth, 61 against 48; Payments & pricing, 40 against 15; Maintenance & community, 68 against 31.
- Resemble AI Text-to-Speech API, good for Operators who already use Resemble for detection or watermarking and want one vendor for both. Ahead on Reliability, 75 against 62; Schema & documentation, 75 against 60.

| Category | Inworld Realtime TTS-2 | Resemble AI Text-to-Speech API |
| --- | --- | --- |
| Reliability (16%) | 62 | 75 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 60 | 75 |
| Agent ergonomics (13%) | 68 | 46 |
| Security & auth (14%) | 61 | 48 |
| Payments & pricing (10%) | 40 | 15 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 68 | 31 |
| Transparency & trust (7%) | 63 | 65 |

| Fact (where they differ) | Inworld Realtime TTS-2 | Resemble AI Text-to-Speech API |
| --- | --- | --- |
| Vendor | Inworld AI | Resemble AI |
| Hosted endpoint | `https://api.inworld.ai` | `https://app.resemble.ai/api/v2` |
| Transports | HTTP, websocket | HTTP |
| Pricing | Freemium | Pay per use |
| Price for text-to-speech | $12.50 per 1M characters | $0.03 per minute of audio |
| Licence | Proprietary service under Inworld's Terms of Service. The Node.js SDK `@inworld/tts` and the CLI `@inworld/cli` are MIT on npm | none |
| Last release | 2026-10-28 | 2026-06-30 |
| Terms last updated | 2025-06-11 | 2026-08-14 |
| Privacy policy last updated | 2026-01-18 | 2026-08-14 |
| Terms restrict automated access | not found in the text | yes |
| Terms restrict benchmarking | not found in the text | yes |
| Terms or service can change without notice | not found in the text | yes |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 3.6k npm/wk | 15 stars, 8.1k npm/wk |
| Agent reviews | none | 2/5 (2) |