AI Speech-to-Text Models

NVIDIANemotron 3.5 ASR Streaming 0.6B
Free · 4 per 2 hoursAfter allowance · ≈ $0.033/use
Input → output
audio → text
Released
Dec 24, 2024
Input
Audio / speech file
Output
Streaming transcription + timestamps

⚡️ Low-latency multilingual transcription | streaming ASR architecture | punctuation | capitalization | auto language detection

AlibabaSenseVoiceSmall
Free · 4 per 2 hoursAfter allowance · ≈ $0.011/use
Input → output
audio → text
Released
Jul 3, 2024
Input
Audio / speech file
Output
Multilingual transcription + emotions

Fast multilingual transcription with FunASR SenseVoice-Small.

OpenAIWhisper v3 Diarization
Free · 1 per hourAfter allowance · ≈ $0.132/use
Input → output
audio → text
Released
Nov 14, 2023
Input
Audio / speech file
Output
Speaker diarization + timestamps

⚡️ Fast audio transcription | whisper v3 | speaker diarization | word level timestamps | prompt

assemblyaiUniversal-3.6 Pro
≈ $0.0000967–0.000113/sec
Input → output
audio → text
Released
Oct 14, 2026
Price
≈ $0.0000967–0.000113/sec

Universal-3.6 Pro is AssemblyAI's speech-to-text model and the successor to Universal-3.5 Pro, served here through AssemblyAI's Sync API. Compared with Universal-3.5 Pro, AssemblyAI reports 30% fewer errors on short conversational...

ElevenLabsScribe v2
≈ $0.0000355/sec
Input → output
audio → text
Released
Oct 7, 2026
Price
≈ $0.0000355/sec

ElevenLabs Scribe v2 is a speech-to-text model that transcribes audio in 90+ languages with word-level timestamps, optional speaker diarization, and audio-event tagging.

ElevenLabsScribe v2 Medical
≈ $0.0000355/sec
Input → output
audio → text
Released
Oct 7, 2026
Price
≈ $0.0000355/sec

ElevenLabs Scribe v2 Medical is a speech-to-text model tuned for clinical and medical terminology, with word-level timestamps, optional speaker diarization, and audio-event tagging.

MicrosoftMAI-Transcribe-2-Streaming
Usage based
Input → output
audio → text
Released
Oct 1, 2026
Price
Usage based

MAI-Transcribe-2-Streaming is a low-latency, "speech in, text out" realtime transcription API. Audio can be sent to the model as a continuous stream over a WebSocket connection and transcripts are returned incrementally as the speaker talks, with no need to wait for the utterance to finish. Intermediate results (aka Partials) update the current transcription; final results confirm a segment.

GoogleGemini 3.5 Transcribe
$2.32 in · $13.9 out /1M tokens
Input → output
audio → text
Released
Sep 25, 2026
In / out price
$2.32 in · $13.9 out /1M tokens

Gemini 3.5 Transcribe is a speech-to-text model from Google. It is suited for synchronous transcription that needs word-level timestamps or speaker diarization, with support for up to eight speakers. Audio...

Fish AudioTranscribe 1 Pro
≈ $0.000116/sec
Input → output
audio → text
Released
Sep 24, 2026
Price
≈ $0.000116/sec

Transcribe 1 Pro is a speech-to-text model from Fish Audio tuned for interviews, meetings, and podcasts. It labels speakers with inline `speaker` markers, preserves emotion and vocal-event cues such as...

assemblyaiUniversal-3.5 Pro
≈ $0.0000967–0.000113/sec
Input → output
audio → text
Released
Sep 22, 2026
Price
≈ $0.0000967–0.000113/sec

Universal-3.5 Pro is AssemblyAI's speech-to-text model served through its Sync API, returning a complete transcript with word-level timestamps in a single synchronous response for audio clips up to 120 seconds....

MetaMuse Voice Transcribe 1.0
≈ $0.000058/sec
Input → output
audio → text
Released
Sep 11, 2026
Price
≈ $0.000058/sec

Muse Voice Transcribe 1.0 is a synchronous speech-to-text model from Meta. It is suited for push-to-talk, endpointing, and speaker-aware transcription, with keyword biasing for domain terms and language biasing through...

MicrosoftMAI-Transcribe 2
≈ $0.0000322/sec
Input → output
audio → text
Released
Sep 3, 2026
Price
≈ $0.0000322/sec

MAI-Transcribe 2 is a multilingual speech-to-text model from Microsoft AI, ranked #1 on the FLEURS multilingual benchmark. It supports 60 languages with automatic language identification, code switching for mixed-language speech,...

NVIDIANemotron 3.5 ASR Streaming Multilingual 0.6B
≈ $0.00000386/sec
Input → output
audio → text
Released
Aug 13, 2026
Price
≈ $0.00000386/sec

Nemotron 3.5 ASR Streaming Multilingual 0.6B is a speech recognition model from NVIDIA. Its prompt-conditioned, cache-aware FastConformer-RNNT design targets low-latency transcription across more than 40 languages for real-time captioning, voice...

Mistral AIVoxtral Small 24B 2507 STT
≈ $0.000058/sec
Input → output
audio → text
Released
Aug 13, 2026
Price
≈ $0.000058/sec

Voxtral Small 24B 2507 STT is a speech transcription model from Mistral AI. It is suited for transcription, translation, and audio understanding workloads that benefit from its larger model capacity.

Mistral AIVoxtral Mini 3B 2507
≈ $0.0000193/sec
Input → output
audio → text
Released
Aug 13, 2026
Price
≈ $0.0000193/sec

Voxtral Mini 3B 2507 is a speech and audio understanding model from Mistral AI. It is suited for transcription, translation, and compact audio processing workloads.

AlibabaQwen3 ASR 1.7B
≈ $0.0000087/sec
Input → output
audio → text
Released
Aug 13, 2026
Price
≈ $0.0000087/sec

Qwen3 ASR 1.7B is an automatic speech recognition model from Qwen. It supports multilingual language identification and transcription across 30 languages and 22 Chinese dialects, with streaming and offline inference...

AlibabaQwen3 ASR 0.6B
≈ $0.00000386/sec
Input → output
audio → text
Released
Aug 13, 2026
Price
≈ $0.00000386/sec

Qwen3 ASR 0.6B is a compact automatic speech recognition model from Qwen. It supports multilingual language identification and transcription across 30 languages and 22 Chinese dialects, with streaming and offline...

OpenAIGPT Transcribe
≈ $0.000087/sec
Input → output
audio → text
Released
Aug 5, 2026
Price
≈ $0.000087/sec

GPT Transcribe is a high-accuracy speech-to-text model from OpenAI. It is suited for recorded audio, streamed file transcription, and committed Realtime turns, with free-form context, keyword hints, and multiple language...

Fish AudioTranscribe 1
≈ $0.000116/sec
Input → output
audio → text
Released
Jul 29, 2026
Price
≈ $0.000116/sec

Transcribe 1 is a speech-to-text model from Fish Audio. It is suited for audio transcription with automatic language detection and can return timestamped word-level segments when alignment details are requested.

xAIGrok STT 1.0
≈ $0.0000322/sec
Input → output
audio → text
Released
Jul 23, 2026
Price
≈ $0.0000322/sec

Grok STT is SpaceXAI's speech-to-text model, available via the REST /v1/stt endpoint. It supports transcription with word-level timestamps, optional speaker diarization, and multichannel audio.

DeepgramNova-3
≈ $0.0000832–0.000101/sec
Input → output
audio → text
Released
Jul 15, 2026
Price
≈ $0.0000832–0.000101/sec

Deepgram Nova-3 general-purpose speech-to-text model with monolingual and multilingual transcription support.

MicrosoftMAI-Transcribe 1.5
≈ $0.000116/sec
Input → output
audio → text
Released
Jun 2, 2026
Price
≈ $0.000116/sec

MAI-Transcribe 1.5 is a multilingual speech-to-text model from Microsoft AI. It is suited for captions, call transcription, subtitling, accessibility, and other voice-enabled applications, with reliable transcription across 43 languages, diverse...

NVIDIAParakeet TDT 0.6B v3
≈ $0.000029/sec
Input → output
audio → text
Released
May 27, 2026
Price
≈ $0.000029/sec

Parakeet TDT 0.6B v3 is NVIDIA's 600M-parameter multilingual speech-to-text model built on the FastConformer-TDT architecture. Trained on the Granary dataset (670,000+ hours of audio), it supports automatic language detection across...

Mistral AIVoxtral Mini Transcribe
≈ $0.000058/sec
Input → output
audio → text
Released
May 15, 2026
Price
≈ $0.000058/sec

Voxtral Mini Transcribe is Mistral's speech-to-text model, derived from the Voxtral Mini family. It accepts audio input and returns transcribed text via the standard transcription API. Suited for transcribing meetings,...