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Async's legacy low-latency model with the broadest language coverage (15 languages including Arabic, Russian, Japanese, Hebrew, Armenian, Turkish, Hindi and Chinese); speed and stability controls, no text normalisation.

Async's latency-optimised streaming model for real-time apps and voice agents: English, Spanish, French, German, Italian and Portuguese, with built-in normalisation of dates, currencies, numbers and abbreviations.

Async's highest-quality English model for content production and audiobooks, with built-in text normalisation; twice the price of Flash.

Deepgram's original text-to-speech model, 12 English voices at half the cost of Aura 2. Fast and reliable.

Deepgram's latest text-to-speech model, 90+ natural voices across 8 languages (EN, FR, DE, ES, IT, NL, JA), sub-200ms latency. Greek mythology-themed voice names.

Sarvam's stable text-to-speech model for Indian languages and English. Returns base64-encoded WAV audio. Production-ready with consistent quality.

Sarvam's latest text-to-speech model, 30+ voices across Indian languages and English. Natural prosody with cultural intonation. Currently in beta.

English TTS with emotion control and zero-shot voice cloning

Multilingual TTS supporting 23 languages with natural prosody

Most expressive TTS model with audio tags, dialogue mode, accent emulation, and 70+ languages. Best for long-form content.

Low-latency v3 tuned for realtime conversation (~280 ms), high-quality expressive delivery with custom audio tags, 70+ languages.

ElevenLabs' most expressive model (September 2026): tone, pacing and emotion read from the text, speaker identity held across long-form, audio tags, 85 languages, up to 10,000 characters per request.

Low-latency Eleven v4 for realtime voice (~100 ms median inference), audio tags, 85 languages, up to 10,000 characters per request.

Ultra-low latency TTS for real-time and conversational AI. ~75ms latency.

Google's low-latency text-to-speech with natural prosody and controllable style. Supports 24 languages.

Premium text-to-speech with enhanced expressivity, richer tone, and precision pacing. Best for high-quality output.

Latest price-performant, low-latency controllable speech generation. 30 voices, 24 languages.

High-throughput, low-latency conversational speech generation. 30 curated voices, 24 languages.

Studio-grade speech generation with expressive acting and long-form stability. 30 prebuilt voices, 24 languages.

xAI's expressive text-to-speech — 26 multilingual voices with inline speech tags for tone, pauses, whispers and laughter. 20+ languages with auto-detection.

Arabic-first speech-to-text with dialect-aware recognition and broad multilingual coverage.

Arabic-first text-to-speech, low-latency tier, with 50 voices spanning Arabic dialects and 20+ languages.

Generate sound effects for longer videos (SFX 1.6), up to 60 seconds of audio from a video URL.

Google DeepMind's latest music generation — 30-second compositions from text prompts with SynthID watermarking.

Full-song generation from Google DeepMind's Lyria 3 — complete compositions from text prompts with SynthID watermarking.

Google DeepMind's Lyria 3.5 — full-length songs with verses, choruses and bridges, vocals and timed lyrics, 44.1 kHz stereo, SynthID watermarking.

Most advanced emotionally-aware speech synthesis with rich expression across 29 languages

ElevenLabs' value-tier music generation: songs up to 10 minutes from a prompt, instrumental on request. Billed per generated minute upstream.

ElevenLabs' studio-grade music generation: songs up to 10 minutes from a prompt, instrumental on request. Billed per generated minute upstream.

Rime's flagship voice model, 269 voices across 9 languages with rich emotional range.

Stylized voices in 4 categories (Professional / Formal / Casual / Energetic). 184 voices, 8 languages.

Original Mist model, 117 English voices, fast.

Mist generation 2, 141 voices across 4 languages.

Latest Mist generation, 83 voices, 4 languages. Improved expressiveness.

Batch speech recognition with word-level timestamps and language detection across 99 languages.

Batch state-of-the-art speech recognition: 98%+ accuracy, keyterm prompting, 90+ languages.

Speech recognition fine-tuned for clinical audio: 35% fewer clinical errors than Scribe v2.

Ultra-low latency (<150ms) live speech recognition. 93.5% accuracy across 90+ languages. WebSocket streaming with VAD.

Speechify's streaming-native multilingual model: English plus German, Spanish (Spain and Mexico), French, Italian and Brazilian Portuguese, and it accepts every Speechify voice whatever its locale.

Speechify's recommended streaming-native English model: lowest time-to-first-byte in the Simba family, fine-grained emotional control and SSML prosody. English voices only.

Cartesia's most natural streaming text-to-speech (2026-08-27): pacing and intonation from context, 60+ emotions, speed and volume controls, 44 languages including Odia and Urdu, sub-100 ms first audio.

Sound effects from a text description: automatic length or a set length up to 22 seconds, with adjustable prompt influence.

Focuses on rhythm, stability, and high-quality voice replication

Enhanced multilingual capabilities with turbo speed

Latest HD variant emphasizing prosody and voice cloning quality

Turbo performance with 40 language support and low latency

Current HD voice model. Highest fidelity prosody and voice cloning.

Current Turbo voice model. Low latency, broad language coverage.

Generate music and sound effects up to 3 minutes from text prompts. Produces structured compositions with intros, development, and outros at 44.1kHz stereo.

Enterprise-grade music and sound generation. Produces structured compositions with intros, development, and outros at 44.1kHz stereo. 8-step inference for fast generation.

Separate audio into individual stems (vocals, drums, bass, etc). 2-stem or 6-stem modes.

Better song organization with clear verse/chorus patterns

Enhanced vocal quality and refined audio processing for music generation

Excellent prompt understanding with faster generation speeds, supports up to 8 minute tracks

Advanced model with enhanced tonal variation and excellent prompt understanding

Cutting-edge model with enhanced quality and capabilities for AI music generation

Low-latency speech generation in 32 languages, optimized for real-time conversational AI

Generate and edit sound effects from video (SFX 1.6). Provide a video URL and optional text prompt; adds seamless extension, looping ambiences, and AI inpainting to erase/replace moments.

Natural text-to-speech with adjustable speed, volume, and pitch.