TTS API comparison
Compare two TTS APIs
The overall score says which text-to-speech API leads the benchmark, not which one fits your voice agent. This comparison breaks the 4 criteria down one by one: a model can lead on real-time speed and trail on voice quality or price.
Looking for an alternative? ElevenLabs alternatives · Cartesia alternatives · Inworld alternatives
Points are computed from three independent benchmarks (Coval, Speko and Artificial Analysis) and updated after each benchmark capture. The full rules are on the methodology page.
Gradium TTS Beta vs every other model: 111 comparisons
One page per model, with the 4 criteria, P50 and P99 latency, accuracy, voice quality and price side by side, and the reasons to pick each one.
- Gradium TTS Beta vs Alibaba Qwen3 TTS Fast 73.7/100
- Gradium TTS Beta vs Soniox TTS Real-Time v2 73.7/100
- Gradium TTS Beta vs Inworld Realtime TTS-2 68.8/100
- Gradium TTS Beta vs Inworld Realtime TTS-2 Flash 68.4/100
- Gradium TTS Beta vs Gradium TTS (Aug 2026) 59.6/100
- Gradium TTS Beta vs Palabra TTS v1 58.6/100
- Gradium TTS Beta vs Cartesia Sonic 3.5 58.5/100
- Gradium TTS Beta vs Soniox TTS RT v1 57.2/100
- Gradium TTS Beta vs ElevenLabs Eleven v3 Conversational 56.8/100
- Gradium TTS Beta vs ElevenLabs Flash v2.5 56.1/100
- Gradium TTS Beta vs SpeechifyAI Simba 3.2 51.6/100
- Gradium TTS Beta vs Deepgram Flux TTS 49.6/100
- Gradium TTS Beta vs Rime Coda 47.1/100
- Gradium TTS Beta vs Fluxions vui 47/100
- Gradium TTS Beta vs Cartesia Sonic 3.6 45.9/100
- Gradium TTS Beta vs Alibaba Qwen3 TTS 1.7b 45.3/100
- Gradium TTS Beta vs Rime Mist v3 44.5/100
- Gradium TTS Beta vs SpaceXAI Grok TTS 43/100
- Gradium TTS Beta vs Deepgram Aura 2 42.8/100
- Gradium TTS Beta vs Smallest.ai Lightning V3.1 Pro (Jul 2026) 41/100
- Gradium TTS Beta vs Deepdub Phantom Z 3.4 conversational 33.9/100
- Gradium TTS Beta vs Fish Audio S2.1 Pro 33.2/100
- Gradium TTS Beta vs Google Gemini 3.8 Flash TTS 29.7/100
- Gradium TTS Beta vs Google Gemini 3.8 Flash-Lite TTS 29.4/100
- Gradium TTS Beta vs Fish Audio OpenAudio S1 28.7/100
- Gradium TTS Beta vs Murf AI Falcon 2 28.4/100
- Gradium TTS Beta vs ElevenLabs Eleven v4 28.3/100
- Gradium TTS Beta vs Google Gemini 3.1 Flash TTS 26.2/100
- Gradium TTS Beta vs SpeechifyAI Simba 3.0 26/100
- Gradium TTS Beta vs ElevenLabs Eleven v4 Turbo 20/100
- Gradium TTS Beta vs Google Chirp 3: HD 18.5/100
- Gradium TTS Beta vs Nari Qwen3-TTS 14.6/100
- Gradium TTS Beta vs Deepgram Aura 2 En 14.4/100
- Gradium TTS Beta vs OpenAI GPT-4o mini TTS 14.4/100
- Gradium TTS Beta vs Smallest.ai Lightning v3.1 14/100
- Gradium TTS Beta vs Bland Speech v3 13.4/100
- Gradium TTS Beta vs Cartesia Sonic 3 11.8/100
- Gradium TTS Beta vs MiniMax Speech 2.8 HD 11.4/100
- Gradium TTS Beta vs Alibaba Qwen-Audio-3.0-TTS-Plus 11.1/100
- Gradium TTS Beta vs VUI Labs Luna TTS 11/100
- Gradium TTS Beta vs ElevenLabs Turbo v2.5 10.4/100
- Gradium TTS Beta vs BreezeBlue Breeze TTS 2 10/100
- Gradium TTS Beta vs async Flash v1.5 9.7/100
- Gradium TTS Beta vs MiniMax Speech 2.6 HD 9.7/100
- Gradium TTS Beta vs ElevenLabs Multilingual v2 9.3/100
- Gradium TTS Beta vs MiniMax Speech 2.8 Turbo 9.3/100
- Gradium TTS Beta vs StepFun StepAudio 2.5 TTS (Aug 2026) 9.3/100
- Gradium TTS Beta vs Alibaba Qwen3 TTS Flash 9/100
- Gradium TTS Beta vs Fish Audio S2 Pro 8.6/100
- Gradium TTS Beta vs MiniMax Speech 2.6 Turbo 8.6/100
- Gradium TTS Beta vs ElevenLabs Eleven v3 8.5/100
- Gradium TTS Beta vs Microsoft Azure HD 2.5 8.5/100
- Gradium TTS Beta vs StepFun Step TTS 2 (Mar 2026) 8.3/100
- Gradium TTS Beta vs async Pro v1.0 8.1/100
- Gradium TTS Beta vs Rime arcanav3 8.1/100
- Gradium TTS Beta vs Google Gemini 2.5 Flash Lite TTS 7.8/100
- Gradium TTS Beta vs OpenAI TTS-1 7.6/100
- Gradium TTS Beta vs OpenAI TTS-1 HD 7.6/100
- Gradium TTS Beta vs Resemble AI Chatterbox HD 7.3/100
- Gradium TTS Beta vs Kokoro 82M v1.0 7.1/100
- Gradium TTS Beta vs Mistral Voxtral TTS 7.1/100
- Gradium TTS Beta vs MiniMax Speech-02-HD 6.8/100
- Gradium TTS Beta vs Hithink Speech 2.6 6.3/100
- Gradium TTS Beta vs Google Gemini 2.5 Flash TTS (Dec 2025) 6.2/100
- Gradium TTS Beta vs MiniMax Speech-02-Turbo 6.2/100
- Gradium TTS Beta vs Fish Audio S2.1 Pro Free 6.1/100
- Gradium TTS Beta vs StepFun Step Audio EditX (Mar 2026) 6/100
- Gradium TTS Beta vs async Flash v1.0 5.8/100
- Gradium TTS Beta vs Hume AI Octave 2 5.8/100
- Gradium TTS Beta vs Hume AI Octave TTS 5.8/100
- Gradium TTS Beta vs Amazon Polly Generative 5.7/100
- Gradium TTS Beta vs Google Studio 5.3/100
- Gradium TTS Beta vs ElevenLabs Flash v2 5.2/100
- Gradium TTS Beta vs MiniMax T2A-01-HD 5.2/100
- Gradium TTS Beta vs Fish Audio OpenAudio S1 Mini 5.1/100
- Gradium TTS Beta vs OpenAI GPT-Realtime-2 5.1/100
- Gradium TTS Beta vs Boson AI Higgs Audio V3 TTS 5/100
- Gradium TTS Beta vs Google Journey 4.9/100
- Gradium TTS Beta vs Maya 2 Flash 4.8/100
- Gradium TTS Beta vs Maya 2 Native 4.8/100
- Gradium TTS Beta vs Microsoft Azure Neural 4.8/100
- Gradium TTS Beta vs NVIDIA Magpie-Multilingual 357M (Feb 2026) 4.4/100
- Gradium TTS Beta vs Alibaba Qwen3 TTS Flash Realtime 4.3/100
- Gradium TTS Beta vs ElevenLabs Turbo v2 4.1/100
- Gradium TTS Beta vs Google Gemini 2.5 Pro (Dec 2025) 4/100
- Gradium TTS Beta vs Xiaomi MiMo-V2.5-TTS 4/100
- Gradium TTS Beta vs OpenVoice v2 3.8/100
- Gradium TTS Beta vs Maya 2 Global 3.5/100
- Gradium TTS Beta vs MiniMax T2A-01-Turbo 3.5/100
- Gradium TTS Beta vs Resemble AI Chatterbox 3.5/100
- Gradium TTS Beta vs Maya Research Maya1 3.4/100
- Gradium TTS Beta vs Google WaveNet 3.3/100
- Gradium TTS Beta vs Zyphra Zonos-v0.1 3.3/100
- Gradium TTS Beta vs Alibaba Qwen3 TTS 3.1/100
- Gradium TTS Beta vs StyleTTS 2 3.1/100
- Gradium TTS Beta vs Amazon Polly Long-Form 2.8/100
- Gradium TTS Beta vs Microsoft MAI-Voice-1 2.8/100
- Gradium TTS Beta vs Google Standard 2.7/100
- Gradium TTS Beta vs Neuphonic TTS 2.6/100
- Gradium TTS Beta vs Amazon Polly Standard 2.4/100
- Gradium TTS Beta vs Amazon Polly Neural 2.2/100
- Gradium TTS Beta vs Xiaomi MiMo-V2-TTS 2.1/100
- Gradium TTS Beta vs Google Neural2 2/100
- Gradium TTS Beta vs Krafton Raon SpeechLM 2/100
- Gradium TTS Beta vs Murf Speech Gen 2 2/100
- Gradium TTS Beta vs Rime Mist V2 1.8/100
- Gradium TTS Beta vs Coqui XTTS v2 1.7/100
- Gradium TTS Beta vs Microsoft VibeVoice 1.5B 1.6/100
- Gradium TTS Beta vs KugelAudio Kugel 3 1.2/100
- Gradium TTS Beta vs Noiz TTS 0.2/100
- Gradium TTS Beta vs MetaVoice v1 0.1/100
The most-cited TTS providers, head to head
The best-ranked model of ElevenLabs, OpenAI, Cartesia, Deepgram and Google, compared two by two.
- ElevenLabs Eleven v3 Conversational vs OpenAI GPT-4o mini TTS
- Cartesia Sonic 3.5 vs ElevenLabs Eleven v3 Conversational
- ElevenLabs Eleven v3 Conversational vs Deepgram Flux TTS
- ElevenLabs Eleven v3 Conversational vs Google Gemini 3.8 Flash TTS
- Cartesia Sonic 3.5 vs OpenAI GPT-4o mini TTS
- Deepgram Flux TTS vs OpenAI GPT-4o mini TTS
- Google Gemini 3.8 Flash TTS vs OpenAI GPT-4o mini TTS
- Cartesia Sonic 3.5 vs Deepgram Flux TTS
- Cartesia Sonic 3.5 vs Google Gemini 3.8 Flash TTS
- Deepgram Flux TTS vs Google Gemini 3.8 Flash TTS