What's free
$100 one-time usage credit (no card) covering Speech-to-Text and Text-to-Speech
Rate limits
2 concurrent real-time STT sessions; 3 voice-agent conversations; 1 batch job/sec (bounded by the $100 credit)
The catch
One-time $100 credit, no card required — replaced the previous 3,000 min/month + 1M chars recurring allowance on 2026-07-31. Add a card when you move to Pro. Commercial-use permission not explicitly stated.
Quickstart
First-party API — not OpenAI-compatible, so there is no drop-in base URL. The exact endpoint is in the official docs; authenticate with your API key in the Authorization: Bearer header.
curl -H "Authorization: Bearer $API_KEY" \
https://<api-base-url>/<endpoint>…or in Python:
import os, requests
r = requests.post(
"https:///",
headers={"Authorization": f"Bearer {os.environ['API_KEY']}"},
json={},
)
print(r.json()) Appears in
Change history
How this free tier has changed since we started tracking it (2026-07-30) — generated from the git history of providers.json.
- 2026-08-14 Updated free tier, rate limits, the catch, free type
- 2026-07-30 Added to the hub