heartflowai

HFAI Cloud Pricing

Every model,
at its list price.

Top up with $HFAI at a USD peg and spend the balance on any model in the catalogue. No subscription, no markup.

Connect wallet See the models
01 / HOW CREDITS WORK

How credits work. Three steps.

One prepaid balance for every model.
No email, no password, no subscription.

  1. 01 / TOP UP Top up

    Buy prepaid credits with $HFAI via Solana Pay at a USD peg — $10 in $HFAI buys $10 in credits.

  2. 02 / BALANCE Balance

    One prepaid balance, no email, no password, no subscription.

  3. 03 / METERED Metered

    Each request is charged at the model’s list price and deducted from the balance.

02 / MODEL PRICES

Model prices

Per 1M tokens, charged from prepaid credits.
The catalogue is published live at the API.

HFAI Cloud model catalogue: context window and price per 1M tokens in US dollars. The live catalogue is published at https://api.heartflowai.net/v1/models.
ModelContextInput / 1MOutput / 1M
DeepSeek V4.1 Flash128K$0.30$1.20
GPT-OSS 120B FREE128K$0.15$0.60
GPT-OSS 20B128K$0.07$0.30
Gemma 4128K$0.14$0.40
GLM 5.3 Flash128K$0.15$0.50
MiniMax M3128K$0.60$2.40
DeepSeek V4 Pro1M$1.32$3.96
Nemotron 3 Ultra256K$0.10$3.00
Kimi K2.6256K$0.95$4.00

A million input tokens plus a million output tokens on DeepSeek V4 Pro costs $1.32 + $3.96 = $5.28 in credits.

Prices are per 1M tokens in US dollars, charged from prepaid credits at the model’s list price. The live catalogue is published at https://api.heartflowai.net/v1/models.

03 / NO FEE ON TOP-UP

No fee on top-up

A pass-through model.
You pay the model’s list price.

No markup, no tiers, no discounts — you pay the model’s list price.

Inference is billed at pass-through: the credits deducted from your balance are the model’s published list price for the tokens you used. Nothing is added on top when you buy credits either.

MANY PROVIDERS
  • One account, card and API key per provider.
  • A separate balance and a separate billing page to watch for each.
  • A new integration every time you want a different model.
HFAI CLOUD
  • One wallet, one balance, one hfai_live_… key.
  • Switching models is changing one string in the request body.

For context, OpenRouter charges a platform fee when you buy credits — 5.5% on Standard and 8% on Business — while billing inference at each provider's list price. HFAI Cloud charges no fee on top-up: $10 in $HFAI buys $10 in credits.

Platform credit fee · checked
04 / WHAT YOU ARE NOT BILLED FOR

What you are not billed for.

One balance, one price.
Nothing else on the invoice.

NO SUBSCRIPTION · NO MARKUP

Connect a wallet.
Spend on any model.

Sign in with a Solana wallet, fund your balance with $HFAI, and mint your API key.

Connect wallet Read the credits docs