Free Speech-to-Text (STT) APIs & Audio Transcription

4 providers · 7 free models · Last updated: 12 Nov 2026

← directory · /v1/models · github

Quick Answer

Free speech-to-text API endpoints for audio transcription, including Groq (Whisper Large v3 at 2,000 requests/day), Deepgram ($200 credits), and AssemblyAI ($50 credits) with zero credit card required.

Total available in this directory: 4 providers, 7 free models. Verified limits below.

⚡ Quick Connect

Hosted Whisper Large v3 Turbo on Groq LPU with 2,000 requests/day free.

Base URL: https://api.groq.com/openai/v1
Model: whisper-large-v3-turbo
Provider: Groq

Python (OpenAI SDK):

from openai import OpenAI

client = OpenAI(
    base_url="https://api.groq.com/openai/v1",
    api_key="your-api-key",  # from Groq
)

response = client.chat.completions.create(
    model="whisper-large-v3-turbo",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)

cURL (Terminal / Shell):

curl -X POST "https://api.groq.com/openai/v1/chat/completions" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $API_KEY" \
  -d '{
    "model": "whisper-large-v3-turbo",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Rate Limits & Model Inventory

ModelProviderCostContextRPMTPMRPDDay tokensVerified
whisper-large-v3-turbo Groq$025MB audio207.2K ASH (Audio sec/hr)2,00028.8K ASD (8h audio/day)2026-11-12
whisper-large-v3 Groq$025MB audio207.2K ASH (Audio sec/hr)2,00028.8K ASD (8h audio/day)2026-11-12
~80 free models (Llama 3.x/4, Qwen, Gemma, DeepSeek-R1 distills, FLUX, Whisper, BGE embeddings) Cloudflare Workers AI$08K-128K+ (model-dependent)300 text gen (720-1,500 other tasks)Model-dependentNot published10,000 neurons/day2026-11-12
@cf/openai/whisper Cloudflare Workers AI$025MB audio300Model-dependentNot published10,000 neurons/day2026-11-12
Whisper Large v3 NVIDIA NIM (build.nvidia.com)$0448~40Not publishedNot published~1,000 credits at signup (up to ~5,000)2026-11-12
nova-3 Deepgram$0N/AN/AN/AN/AN/A2026-11-12
nova-2 Deepgram$0N/AN/AN/AN/AN/A2026-11-12

Machine-readable: Markdown Twin · providers.json · sitemap.xml

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