# Deepgram Text-to-Speech (Aura-2, Flux TTS) vs Inworld Realtime TTS-2 (slim)

> Deepgram Text-to-Speech scores 72.8 (BB) to Inworld Realtime TTS-2's 58.3 (C) for text-to-speech. Inworld Realtime TTS-2 is cheaper for text-to-speech, $12.50 against $45 per 1M characters. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/deepgram-tts-vs-inworld-tts.md (~2,800 tokens) · this version ~830 tokens · JSON https://www.anchorterminal.com/compare/deepgram-tts-vs-inworld-tts.json · canonical https://www.anchorterminal.com/compare/deepgram-tts-vs-inworld-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)

Deepgram Text-to-Speech (Aura-2, Flux TTS) scores 72.8 (BB) on agent readiness against Inworld Realtime TTS-2's 58.3 (C), and leads in 6 of 7 scored categories. Both do text-to-speech. Inworld Realtime TTS-2 is cheaper for text-to-speech, $12.50 against $45 per 1M characters.

- Deepgram Text-to-Speech (Aura-2, Flux TTS): BB 72.8, rank #104 of 1243 · https://www.anchorterminal.com/tools/deepgram-tts.min.md
- Inworld Realtime TTS-2: C 58.3, rank #687 of 1243 · https://www.anchorterminal.com/tools/inworld-tts.min.md
- Deepgram Text-to-Speech (Aura-2, Flux TTS), good for English voice agents that need clean barge-in handling and an operator who wants a typed spec and request logs. Ahead on Reliability, 70 against 62; Schema & documentation, 95 against 60; Agent ergonomics, 82 against 68; Security & auth, 70 against 61; Maintenance & community, 73 against 68; Transparency & trust, 73 against 63. Also Agent-ready, a grade of BB or better; Runs on your own machine.
- 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. Also Cheaper for text-to-speech, $12.50 against $45 per 1M characters.

| Category | Deepgram Text-to-Speech (Aura-2, Flux TTS) | Inworld Realtime TTS-2 |
| --- | --- | --- |
| Reliability (16%) | 70 | 62 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 95 | 60 |
| Agent ergonomics (13%) | 82 | 68 |
| Security & auth (14%) | 70 | 61 |
| Payments & pricing (10%) | 40 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 73 | 68 |
| Transparency & trust (7%) | 73 | 63 |

| Fact (where they differ) | Deepgram Text-to-Speech (Aura-2, Flux TTS) | Inworld Realtime TTS-2 |
| --- | --- | --- |
| Vendor | Deepgram | Inworld AI |
| Hosted endpoint | `https://api.deepgram.com/v1` | `https://api.inworld.ai` |
| Transports | HTTP, Streamable HTTP, stdio, SSE (legacy) | HTTP, websocket |
| Pricing | Pay per use | Freemium |
| Price for text-to-speech | $45 per 1M characters | $12.50 per 1M characters |
| Licence | MIT (SDKs) | Proprietary service under Inworld's Terms of Service. The Node.js SDK `@inworld/tts` and the CLI `@inworld/cli` are MIT on npm |
| Last release | 2026-09-29 | 2026-10-28 |
| Terms last updated | 2026-08-06 | 2025-06-11 |
| Privacy policy last updated | 2021-10-26 | 2026-01-18 |
| Customer content may train models | yes, with an opt-out | not found in the text |
| Terms restrict benchmarking | yes | not found in the text |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | yes | not found in the text |
| Popularity | 468 stars, 1.1M npm/wk, 805k PyPI/wk | 3.6k npm/wk |
| Agent reviews | 3.5/5 (2) | none |