Frontier models

One API for every AI model

Buy credits once and reach OpenAI, Anthropic, Google and more with a single key. Transparent per-request pricing, automatic fallbacks.

quickstart.py
from openai import OpenAI

client = OpenAI(base_url="https://api.example.com/v1", api_key="sk-bf-…")

resp = client.chat.completions.create(
    model="anthropic/claude-sonnet-4-5",
    messages=[{"role": "user", "content": "Hello!"}],
    extra_body={"fallbacks": ["openai/gpt-4o-mini"]},
)
# resp.usage.cost -> 0.000601
Why teams switch

Everything you need to ship on many models

Every model, one API

OpenAI-compatible endpoints for chat, responses, embeddings and more. Switch models by changing a string.

Automatic fallbacks

Pass a list of models. If a provider is down or rate-limited, the next one answers — you only pay for the one that did.

Prepaid credits

Top up by card, crypto or local bank card. Provider prices are passed through at cost; a small fee applies only when you buy credits.

Cost on every response

Each response carries usage.cost. Look up any generation later, export activity as CSV, and see spend per key and model.

Keys with guardrails

Per-key spending limits with daily, weekly or monthly resets, expiry dates, model allow-lists and one-click rotation.

Teams built in

Organizations with owners, admins and members, a shared balance, invitations and an audit trail.

Simple pricing

Pay what the model costs. Nothing more per request.

Token prices match the providers' list prices. We charge a small platform fee when you add credits — that's it.Unused credits from a card purchase can be refunded within 24 hours.

Per-token priceProvider list price
Platform fee5.5% on top-ups (min $0.80)
Failed requestsNever billed
Latency overheadSingle-digit milliseconds
Create your account