Billing model#
LumenFlow uses a hybrid billing model:
- Platform fee — fixed monthly charge based on your plan
- Managed inference usage — included credit on Free, metered on paid plans
- BYOK provider usage — billed by your chosen model provider when applicable
You pay LumenFlow for the platform and any managed inference you use. If you connect a bring your own model key, that provider bills the model usage directly.
How metering works#
Every interaction with Sidekick consumes tokens:
| Component | Tokens |
|---|---|
| System prompt | ~500 (fixed overhead) |
| Your message | Varies by length |
| Conversation history | Grows with conversation |
| Tool definitions | ~200 per connected tool |
| Response | Varies by complexity |
Token usage is tracked per action and displayed in Observe → Analytics.
Payment methods#
- Credit card — Visa, Mastercard, Amex
- Annual billing — on our roadmap; contact us for details
- Invoice — Available for Enterprise arrangements
Billing cycle#
- Platform fees are charged on the 1st of each month
- Token usage is metered in real-time
- Invoices are available in Settings → Billing → Invoices
info Free plan users don't need a payment method. You'll be prompted to add one when upgrading or exceeding the included managed inference allowance.
Ask Sidekick directly#
You don't have to open this page to check where things stand. Ask Sidekick things like "what's our current plan" or "how much of our allowance have we used this month" in chat, and it answers with your workspace's real numbers — plan tier, subscription status, and managed inference allowance used and remaining.