What's free
200M free tokens on current embedding models (voyage-4-large, voyage-4, voyage-4-lite, voyage-context-4, voyage-code-4) and on rerankers (rerank-2.5 family); voyage-multimodal-3.5 and voyage-multimodal-3 get 200M text tokens + 150B pixels — a large one-time complimentary allotment per model
Rate limits
Standard per-model RPM/TPM limits apply; the free-token allotment is the practical ceiling
The catch
The allotment is a one-time complimentary balance per model, not a renewing monthly quota. No credit card required to claim. Owned by MongoDB — a first-party model provider, not a proxy.
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 (2026-07-31) — generated from the git history of providers.json.
- 2026-08-14 Updated free tier
- 2026-07-31 Added to the hub