Most natural text-to-speech voice
Default pickSpeechifyAI Simba 3.2
On the Artificial Analysis Speech Arena, a blind-vote naturalness ranking, SpeechifyAI Simba 3.2 is now the highest-scoring row in this table, ahead of Google Gemini 3.1 Flash TTS and Cartesia Sonic 3.5; OpenAI's gpt-4o-mini-tts and Deepgram's Aura-2 are not ranked. Only Cartesia's beta, API-only Sonic 3.6 scores higher on the full leaderboard. The Arena re-ranks continuously, so read this as rank-order, not exact gaps. A light estimate, August 2026.
DefaultSpeechifyAI Simba 3.2natuurlijksteSpeechifyAI Simba 3.2
Provider offerings
| Offering | Price ($/1M chars) | ELO | TTFA | Langs | Capabilities |
|---|---|---|---|---|---|
| ElevenLabs Multilingual v2 / Eleven v3ElevenLabs | 100 | 1179 | 653 ms | 29 | streamingcloning |
| Cartesia Sonic 3 / Sonic 3.5Cartesia | 39* | 1203 | 271 ms | 42 | streamingcloning |
| Google Gemini 3.1 Flash TTSGoogle | 12* | 1212 | — | — | streaming |
| OpenAI gpt-4o-mini-ttsOpenAI | 15* | — | 775 ms | 50 | streaming |
| MiniMax Speech 2.5 TurboMiniMax | 78 | — | — | — | streamingcloning |
| Deepgram Aura-2Deepgram | 30 | — | 293 ms | 7 | streaming |
| SpeechifyAI Simba 3.2Speechify | 10* | 1240 | 398 ms | 30 | streamingcloning |
* token-/credit-priced — the headline understates real per-unit cost, so it is excluded from the cheapest ranking.
Sources
- SpeechifyAI — API pricing (TTS tiers)2026-08-20
- Artificial Analysis — Text to Speech Leaderboard (Speech Arena provider-voice, blind-vote ELO, 99 models)2026-08-20
- Coval — TTS benchmark data (TTFA P50/P95 and WER, rolling 7-day window on a pinned dataset), mirrored with methodology notes by Openbenchmarks; pulled 2026-08-20 06:30 UTC2026-08-20
- Coval — Best TTS Providers 2026 guide (successor to the 2026-05-04 benchmark post; now carries vendor-claimed latencies only, no benchmark table)2026-08-20
- ElevenLabs — API Pricing2026-08-20
- Cartesia — Pricing2026-08-20
- Google — Gemini Developer API Pricing2026-08-20
- OpenAI — API Pricing (developers.openai.com; the former openai.com/api/pricing/ URL now returns 403)2026-08-20
- MiniMax — Product Pricing (API docs)2026-06-22
- Deepgram — Pricing (Aura-2 and Flux TTS)2026-08-20
- Deepgram — TTS model docs (Aura-2 language list)2026-08-20
- MarkTechPost — Cartesia ships Sonic-3.6 (launch date, beta/API-only status)2026-08-20