Gradium TTS Beta
Leader Proprietary · Gradium
76.8
/100
Gradium TTS Beta is a proprietary text-to-speech (TTS) API from Gradium, measured by two independent benchmarks: Coval and Speko.
Voice agents Coval Speko
Benchmark
TTS APIs measured by Speko
43 text-to-speech (TTS) models, ranked from the highest benchmark score to the lowest, out of 100.
Data checked on September 30, 2026 · updated after each benchmark capture
Alibaba Qwen3 TTS Fast
Leader Open weights · Alibaba (Qwen)
73.7
/100
Alibaba Qwen3 TTS Fast is an open-weights text-to-speech (TTS) API from Alibaba (Qwen), served by Nari Labs, measured by two independent benchmarks: Coval and Speko.
Voice agents Coval Speko
Soniox TTS Real-Time v2
Leader Proprietary · Soniox
73.7
/100
Soniox TTS Real-Time v2 is a proprietary text-to-speech (TTS) API from Soniox, measured by three independent benchmarks: Artificial Analysis, Coval and Speko.
Spanish German French Japanese
+12
Inworld Realtime TTS-2
Strong Proprietary · Inworld
68.8
/100
Inworld Realtime TTS-2 is a proprietary text-to-speech (TTS) API from Inworld, measured by three independent benchmarks: Artificial Analysis, Coval and Speko.
Spanish German French Portuguese
+15
Inworld Realtime TTS-2 Flash
Strong Proprietary · Inworld
68.4
/100
Inworld Realtime TTS-2 Flash is a proprietary text-to-speech (TTS) API from Inworld, measured by three independent benchmarks: Artificial Analysis, Coval and Speko.
Spanish German French Portuguese
+13
Gradium TTS (Aug 2026)
Strong Proprietary · Gradium
59.6
/100
Gradium TTS (Aug 2026) is a proprietary text-to-speech (TTS) API from Gradium, measured by three independent benchmarks: Artificial Analysis, Coval and Speko.
Spanish German French Portuguese
+7
Palabra TTS v1
Strong Proprietary · Palabra
58.6
/100
Palabra TTS v1 is a proprietary text-to-speech (TTS) API from Palabra, measured by two independent benchmarks: Coval and Speko.
Voice agents Coval Speko
Cartesia Sonic 3.5
Strong Proprietary · Cartesia
58.5
/100
Cartesia Sonic 3.5 is a proprietary text-to-speech (TTS) API from Cartesia, measured by three independent benchmarks: Artificial Analysis, Coval and Speko.
Spanish German French Portuguese
+18
Soniox TTS RT v1
Strong Proprietary · Soniox
57.2
/100
Soniox TTS RT v1 is a proprietary text-to-speech (TTS) API from Soniox, measured by two independent benchmarks: Coval and Speko.
Spanish German French Coval
+1
ElevenLabs Eleven v3 Conversational
Strong Proprietary · ElevenLabs
56.8
/100
ElevenLabs Eleven v3 Conversational is a proprietary text-to-speech (TTS) API from ElevenLabs, measured by three independent benchmarks: Artificial Analysis, Coval and Speko.
Spanish German French Portuguese
+16
ElevenLabs Flash v2.5
Strong Proprietary · ElevenLabs
56.1
/100
ElevenLabs Flash v2.5 is a proprietary text-to-speech (TTS) API from ElevenLabs, measured by three independent benchmarks: Artificial Analysis, Coval and Speko.
Spanish German French Portuguese
+8
SpeechifyAI Simba 3.2
Contender Proprietary · Speechify
51.6
/100
SpeechifyAI Simba 3.2 is a proprietary text-to-speech (TTS) API from Speechify, measured by three independent benchmarks: Artificial Analysis, Coval and Speko.
Knowledge sharing Assistants Entertainment Customer service
+3
Deepgram Flux TTS
Contender Proprietary · Deepgram
49.6
/100
Deepgram Flux TTS is a proprietary text-to-speech (TTS) API from Deepgram, measured by two independent benchmarks: Coval and Speko.
Coval Speko
Rime Coda
Contender Proprietary · Rime
47.1
/100
Rime Coda is a proprietary text-to-speech (TTS) API from Rime, measured by three independent benchmarks: Artificial Analysis, Coval and Speko.
Korean Artificial Analysis Coval Speko
Cartesia Sonic 3.6
Contender Proprietary · Cartesia
45.9
/100
Cartesia Sonic 3.6 is a proprietary text-to-speech (TTS) API from Cartesia, measured by three independent benchmarks: Artificial Analysis, Coval and Speko.
Spanish German French Portuguese
+12
Rime Mist v3
Contender Proprietary · Rime
44.5
/100
Rime Mist v3 is a proprietary text-to-speech (TTS) API from Rime, measured by two independent benchmarks: Coval and Speko.
Coval Speko
SpaceXAI Grok TTS
Contender Proprietary · xAI
43
/100
SpaceXAI Grok TTS is a proprietary text-to-speech (TTS) API from xAI, measured by three independent benchmarks: Artificial Analysis, Coval and Speko.
Spanish German French Portuguese
+14
Deepgram Aura 2
Contender Proprietary · Deepgram
42.8
/100
Deepgram Aura 2 is a proprietary text-to-speech (TTS) API from Deepgram, measured by two independent benchmarks: Coval and Speko.
Spanish German French Coval
+1
Smallest.ai Lightning V3.1 Pro (Jul 2026)
Contender Proprietary · Smallest.ai
41
/100
Smallest.ai Lightning V3.1 Pro (Jul 2026) is a proprietary text-to-speech (TTS) API from Smallest.ai, measured by three independent benchmarks: Artificial Analysis, Coval and Speko.
Knowledge sharing Assistants Entertainment Customer service
+3
Fish Audio S2.1 Pro
Listed Proprietary · Fish Audio
33.2
/100
Fish Audio S2.1 Pro is a proprietary text-to-speech (TTS) API from Fish Audio, measured by three independent benchmarks: Artificial Analysis, Coval and Speko.
Spanish German French Portuguese
+12
Google Gemini 3.8 Flash TTS
Listed Proprietary · Google
29.7
/100
Google Gemini 3.8 Flash TTS is a proprietary text-to-speech (TTS) API from Google, measured by two independent benchmarks: Artificial Analysis and Speko.
Spanish German French Portuguese
+11
Google Gemini 3.8 Flash-Lite TTS
Listed Proprietary · Google
29.4
/100
Google Gemini 3.8 Flash-Lite TTS is a proprietary text-to-speech (TTS) API from Google, measured by two independent benchmarks: Artificial Analysis and Speko.
Spanish German French Portuguese
+11
ElevenLabs Eleven v4
Listed Proprietary · ElevenLabs
28.3
/100
ElevenLabs Eleven v4 is a proprietary text-to-speech (TTS) API from ElevenLabs, measured by two independent benchmarks: Artificial Analysis and Speko.
Spanish German French Portuguese
+11
Google Gemini 3.1 Flash TTS
Listed Proprietary · Google
26.2
/100
Google Gemini 3.1 Flash TTS is a proprietary text-to-speech (TTS) API from Google, measured by two independent benchmarks: Artificial Analysis and Speko.
Japanese Chinese Hindi Korean
+11
ElevenLabs Eleven v4 Turbo
Listed ElevenLabs
20
/100
ElevenLabs Eleven v4 Turbo is a text-to-speech (TTS) API from ElevenLabs, measured by one independent benchmark, Speko.
Speko
Nari Qwen3-TTS
Listed Open weights · Alibaba (Qwen)
14.6
/100
Nari Qwen3-TTS is an open-weights text-to-speech (TTS) API from Alibaba (Qwen), served by Nari Labs, measured by one independent benchmark, Speko.
Speko
OpenAI GPT-4o mini TTS
Listed Proprietary · OpenAI
14.4
/100
OpenAI GPT-4o mini TTS is a proprietary text-to-speech (TTS) API from OpenAI, measured by two independent benchmarks: Coval and Speko.
Spanish German French Japanese
+7
Smallest.ai Lightning v3.1
Listed Proprietary · Smallest.ai
14
/100
Smallest.ai Lightning v3.1 is a proprietary text-to-speech (TTS) API from Smallest.ai, measured by two independent benchmarks: Artificial Analysis and Speko.
Spanish German French Hindi
+2
Bland Speech v3
Listed Proprietary · Bland AI
13.4
/100
Bland Speech v3 is a proprietary text-to-speech (TTS) API from Bland AI, measured by two independent benchmarks: Artificial Analysis and Speko.
Artificial Analysis Speko
Cartesia Sonic 3
Listed Proprietary · Cartesia
11.8
/100
Cartesia Sonic 3 is a proprietary text-to-speech (TTS) API from Cartesia, measured by two independent benchmarks: Artificial Analysis and Speko.
Spanish German French Portuguese
+7
MiniMax Speech 2.8 HD
Listed Proprietary · MiniMax
11.4
/100
MiniMax Speech 2.8 HD is a proprietary text-to-speech (TTS) API from MiniMax, measured by two independent benchmarks: Artificial Analysis and Speko.
Spanish German French Portuguese
+13
ElevenLabs Turbo v2.5
Listed Proprietary · ElevenLabs
10.4
/100
ElevenLabs Turbo v2.5 is a proprietary text-to-speech (TTS) API from ElevenLabs, measured by two independent benchmarks: Artificial Analysis and Speko.
Spanish German French Portuguese
+7
MiniMax Speech 2.6 HD
Listed Proprietary · MiniMax
9.7
/100
MiniMax Speech 2.6 HD is a proprietary text-to-speech (TTS) API from MiniMax, measured by two independent benchmarks: Artificial Analysis and Speko.
Japanese Chinese Korean Thai
+4
ElevenLabs Multilingual v2
Listed Proprietary · ElevenLabs
9.3
/100
ElevenLabs Multilingual v2 is a proprietary text-to-speech (TTS) API from ElevenLabs, measured by two independent benchmarks: Artificial Analysis and Speko.
Spanish German French Portuguese
+6
MiniMax Speech 2.8 Turbo
Listed Proprietary · MiniMax
9.3
/100
MiniMax Speech 2.8 Turbo is a proprietary text-to-speech (TTS) API from MiniMax, measured by two independent benchmarks: Artificial Analysis and Speko.
Spanish German French Portuguese
+11
Alibaba Qwen3 TTS Flash
Listed Proprietary · Alibaba (Qwen)
9
/100
Alibaba Qwen3 TTS Flash is a proprietary text-to-speech (TTS) API from Alibaba (Qwen), measured by two independent benchmarks: Artificial Analysis and Speko.
Spanish German French Artificial Analysis
+1
MiniMax Speech 2.6 Turbo
Listed Proprietary · MiniMax
8.6
/100
MiniMax Speech 2.6 Turbo is a proprietary text-to-speech (TTS) API from MiniMax, measured by two independent benchmarks: Artificial Analysis and Speko.
Knowledge sharing Entertainment Customer service Artificial Analysis
+1
Rime arcanav3
Listed Rime
8.1
/100
Rime arcanav3 is a text-to-speech (TTS) API from Rime, measured by one independent benchmark, Speko.
Spanish German French Speko
Hume AI Octave 2
Listed Proprietary · Hume AI
5.8
/100
Hume AI Octave 2 is a proprietary text-to-speech (TTS) API from Hume AI, measured by two independent benchmarks: Artificial Analysis and Speko.
Spanish German French Japanese
+2
Hume AI Octave TTS
Listed Proprietary · Hume AI
5.8
/100
Hume AI Octave TTS is a proprietary text-to-speech (TTS) API from Hume AI, measured by two independent benchmarks: Artificial Analysis and Speko.
Artificial Analysis Speko
ElevenLabs Flash v2
Listed ElevenLabs
5.2
/100
ElevenLabs Flash v2 is a text-to-speech (TTS) API from ElevenLabs, measured by one independent benchmark, Speko.
Speko
Maya 2 Native
Listed Maya Research
4.8
/100
Maya 2 Native is a text-to-speech (TTS) API from Maya Research, measured by one independent benchmark, Speko.
Hindi Tamil Telugu Speko
ElevenLabs Turbo v2
Listed ElevenLabs
4.1
/100
ElevenLabs Turbo v2 is a text-to-speech (TTS) API from ElevenLabs, measured by one independent benchmark, Speko.
Speko