Check out Neuralwatt. They are ZDR and great energy based K3 pricing. They also have a K3-fast which is basically no reasoning (in addition to regular K3).
industry standard is price-per-1M tokens, don't do something different, even Google caved and moved from their char based pricing to tokens (the fundamental unit of computation in ai)
GPUs are rented in $/h, like every other piece of hardware in cloud
Anyway, they still have token based pricing if you prefer. The energy pricing is often cheaper though
A trust page is required like https://trust.fireworks.ai
Very happy with my $10/month OpenCode Go sub for personal use