How are the comparisons chosen?

Each page sets Gradium TTS against one other model in the index, so 95 pages cover every other model. Gradium TTS is the fixed reference of the set; the pages do not say either model is better overall.

How are the two models compared?

Each row is one measure copied from a public benchmark. A latency gap under 10 ms, or listener Elo values whose 95% intervals overlap, is shown as a tie. No measures are added into a score.

Data read October 27, 2026

Gradium TTS compared with 95 other TTS APIs

One page per pair, on latency, voice preference, accuracy, price and languages tested. Ranked models come first, in ranking order; the others follow alphabetically.

Comparisons
Comparison	Provider	Speed tier
Gradium TTS vs Inworld Realtime TTS-2 Flash	Inworld	Headroom
Gradium TTS vs Alibaba Qwen3 TTS Fast	Alibaba (Qwen)	Headroom
Gradium TTS vs Alibaba Qwen3 TTS 1.7b	Alibaba (Qwen)	Fast enough
Gradium TTS vs SpeechifyAI Simba 3.0	Speechify	Fast enough
Gradium TTS vs Inworld Realtime TTS-2	Inworld	Fast enough
Gradium TTS vs Palabra TTS v1	Palabra	Fast enough
Gradium TTS vs ElevenLabs Eleven v4 Turbo	ElevenLabs	Fast enough
Gradium TTS vs ElevenLabs Flash v2.5	ElevenLabs	Fast enough
Gradium TTS vs Soniox TTS RT v1	Soniox	Visible delay
Gradium TTS vs Soniox TTS Real-Time v2	Soniox	Visible delay
Gradium TTS vs Murf AI Falcon 2	Murf AI	Visible delay
Gradium TTS vs Rime Mist v3	Rime	Visible delay
Gradium TTS vs Cartesia Sonic 3.6	Cartesia	Visible delay
Gradium TTS vs Cartesia Sonic 3.5	Cartesia	Visible delay
Gradium TTS vs Deepdub PhantomZ 4.0	Deepdub	Visible delay
Gradium TTS vs Rime Coda	Rime	Visible delay
Gradium TTS vs SpaceXAI Grok TTS	xAI	Visible delay
Gradium TTS vs Fish Audio S2.1 Pro	Fish Audio	Visible delay
Gradium TTS vs Smallest.ai Lightning V3.1 Pro (Jul 2026)	Smallest.ai	Visible delay
Gradium TTS vs Alibaba Qwen3 TTS Flash Realtime	Alibaba (Qwen)	Visible delay
Gradium TTS vs Google Chirp 3: HD	Google	Visible delay
Gradium TTS vs Fish Audio S2.1 Pro Free	Fish Audio	Visible delay
Gradium TTS vs Alibaba Qwen-Audio-3.0-TTS-Plus	Alibaba (Qwen)	n/a
Gradium TTS vs Alibaba Qwen-Audio-3.1-TTS-Plus	Alibaba (Qwen)	n/a
Gradium TTS vs Alibaba Qwen3 TTS	Alibaba (Qwen)	n/a
Gradium TTS vs Alibaba Qwen3 TTS Flash	Alibaba (Qwen)	n/a
Gradium TTS vs Amazon Polly Generative	Amazon	n/a
Gradium TTS vs Amazon Polly Long-Form	Amazon	n/a
Gradium TTS vs Amazon Polly Neural	Amazon	n/a
Gradium TTS vs Amazon Polly Standard	Amazon	n/a
Gradium TTS vs async Flash v1.0	Async	n/a
Gradium TTS vs async Flash v1.5	Async	n/a
Gradium TTS vs async Pro v1.0	Async	n/a
Gradium TTS vs Bland Speech v3	Bland AI	n/a
Gradium TTS vs Boson AI Higgs Audio V3 TTS	Boson AI	n/a
Gradium TTS vs BreezeBlue Breeze TTS 2	BreezeBlue	n/a
Gradium TTS vs Cartesia Sonic 3	Cartesia	n/a
Gradium TTS vs Coqui XTTS v2	Coqui	n/a
Gradium TTS vs Deepgram Aura 2	Deepgram	Visible delay
Gradium TTS vs Deepgram Aura 2 En	Deepgram	Visible delay
Gradium TTS vs Deepgram Flux TTS	Deepgram	Fast enough
Gradium TTS vs ElevenLabs Eleven v3	ElevenLabs	n/a
Gradium TTS vs ElevenLabs Eleven v3 Conversational	ElevenLabs	n/a
Gradium TTS vs ElevenLabs Eleven v4	ElevenLabs	n/a
Gradium TTS vs ElevenLabs Flash v2	ElevenLabs	n/a
Gradium TTS vs ElevenLabs Multilingual v2	ElevenLabs	n/a
Gradium TTS vs ElevenLabs Turbo v2	ElevenLabs	n/a
Gradium TTS vs ElevenLabs Turbo v2.5	ElevenLabs	n/a
Gradium TTS vs Fish Audio Drama 3 Preview	Fish Audio	Fast enough
Gradium TTS vs Fish Audio OpenAudio S1	Fish Audio	n/a
Gradium TTS vs Fish Audio OpenAudio S1 Mini	Fish Audio	n/a
Gradium TTS vs Fish Audio S2 Pro	Fish Audio	n/a
Gradium TTS vs Fluxions vui	Fluxions	Headroom
Gradium TTS vs Google Gemini 2.5 Flash Lite TTS	Google	n/a
Gradium TTS vs Google Gemini 2.5 Flash TTS (Dec 2025)	Google	n/a
Gradium TTS vs Google Gemini 2.5 Pro (Dec 2025)	Google	n/a
Gradium TTS vs Google Gemini 3.1 Flash TTS	Google	n/a
Gradium TTS vs Google Gemini 3.8 Flash TTS	Google	n/a
Gradium TTS vs Google Gemini 3.8 Flash-Lite TTS	Google	n/a
Gradium TTS vs Gradium TTS (Aug 2026)	Gradium	n/a
Gradium TTS vs Guava Daytona TTS	Guava	Visible delay
Gradium TTS vs Hume AI Octave 2	Hume AI	n/a
Gradium TTS vs Hume AI Octave TTS	Hume AI	n/a
Gradium TTS vs KugelAudio Kugel 3	KugelAudio	n/a
Gradium TTS vs Maya 2 Flash	Maya Research	n/a
Gradium TTS vs Maya 2 Global	Maya Research	n/a
Gradium TTS vs Maya 2 Native	Maya Research	n/a
Gradium TTS vs Maya Research Maya1	Maya Research	n/a
Gradium TTS vs Microsoft Azure HD 2.5	Microsoft	n/a
Gradium TTS vs Microsoft Azure Neural	Microsoft	n/a
Gradium TTS vs Microsoft MAI-Voice-2.1	Microsoft	n/a
Gradium TTS vs Microsoft MAI-Voice-2.1-Flash	Microsoft	n/a
Gradium TTS vs MiniMax Speech 2.6 HD	MiniMax	n/a
Gradium TTS vs MiniMax Speech 2.6 Turbo	MiniMax	n/a
Gradium TTS vs MiniMax Speech 2.8 HD	MiniMax	n/a
Gradium TTS vs MiniMax Speech 2.8 Turbo	MiniMax	n/a
Gradium TTS vs MiniMax Speech-02-HD	MiniMax	n/a
Gradium TTS vs MiniMax Speech-02-Turbo	MiniMax	n/a
Gradium TTS vs Mistral Voxtral 3 TTS	Mistral	n/a
Gradium TTS vs Mistral Voxtral Mini TTS 3	Mistral	n/a
Gradium TTS vs Mistral Voxtral TTS	Mistral	n/a
Gradium TTS vs Nari Qwen3-TTS	Alibaba (Qwen)	n/a
Gradium TTS vs Neuphonic TTS	Neuphonic	n/a
Gradium TTS vs OpenAI GPT-4o mini TTS	OpenAI	n/a
Gradium TTS vs OpenAI GPT-Realtime-2	OpenAI	n/a
Gradium TTS vs OpenAI TTS-1	OpenAI	n/a
Gradium TTS vs OpenAI TTS-1 HD	OpenAI	n/a
Gradium TTS vs Out of Set Airy TTS	Out of Set	Visible delay
Gradium TTS vs Paxa TTS Flash v1	Paxa	n/a
Gradium TTS vs Rime arcanav3	Rime	n/a
Gradium TTS vs Rime Mist V2	Rime	n/a
Gradium TTS vs Smallest.ai Lightning v3.1	Smallest.ai	n/a
Gradium TTS vs SpeechifyAI Simba 3.2	Speechify	Fast enough
Gradium TTS vs StepFun Step TTS 2 (Mar 2026)	StepFun	n/a
Gradium TTS vs StepFun StepAudio 2.5 TTS (Aug 2026)	StepFun	n/a

Frequently asked questions

How are the comparisons chosen?: Each page sets Gradium TTS against one other model in the index, so 95 pages cover every other model. Gradium TTS is the fixed reference of the set; the pages do not say either model is better overall.
How are the two models compared?: Each row is one measure copied from a public benchmark. A latency gap under 10 ms, or listener Elo values whose 95% intervals overlap, is shown as a tie. No measures are added into a score.