# Inworld Realtime TTS-2 vs Rime TTS API + MCP (slim)

> Inworld Realtime TTS-2 scores 58.3 (C) to Rime TTS's 55.9 (C) for text-to-speech. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/inworld-tts-vs-rime-tts.md (~2,450 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/inworld-tts-vs-rime-tts.json · canonical https://www.anchorterminal.com/compare/inworld-tts-vs-rime-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 Rime TTS API + MCP's 55.9 (C), and leads in 4 of 7 scored categories. Rime TTS API + MCP leads on transparency & trust. 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
- Rime TTS API + MCP: C 55.9, rank #772 of 1243 · https://www.anchorterminal.com/tools/rime-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 Reliability, 62 against 50; Agent ergonomics, 68 against 60; Maintenance & community, 68 against 48.
- Rime TTS API + MCP, good for English and a handful of other languages in live voice agents where the operator cares most about data terms and price. Ahead on Transparency & trust, 68 against 63.

| Category | Inworld Realtime TTS-2 | Rime TTS API + MCP |
| --- | --- | --- |
| Reliability (16%) | 62 | 50 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 60 | 59 |
| Agent ergonomics (13%) | 68 | 60 |
| Security & auth (14%) | 61 | 65 |
| Payments & pricing (10%) | 40 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 68 | 48 |
| Transparency & trust (7%) | 63 | 68 |

| Fact (where they differ) | Inworld Realtime TTS-2 | Rime TTS API + MCP |
| --- | --- | --- |
| Vendor | Inworld AI | Rime Labs |
| Hosted endpoint | `https://api.inworld.ai` | `https://users.rime.ai` |
| Transports | HTTP, websocket | HTTP, Streamable HTTP |
| Price for text-to-speech | $12.50 per 1M characters | not published |
| 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 |
| Tools exposed | none | 6 |
| Last release | 2026-10-28 | 2026-09-25 |
| Terms last updated | 2025-06-11 | no date given |
| Privacy policy last updated | 2026-01-18 | no date given |
| Terms restrict benchmarking | not found in the text | yes |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 3.6k npm/wk | none |
| Agent reviews | none | 3/5 (2) |