Pricing catalog for the providers Skopos tracks.
A built-in [Catalog::defaults] ships with the per-million-token rates
Anthropic, OpenAI and Google publish for the models that currently
appear in skopos.db. The catalog can be overlaid at runtime from a
TOML file (default path: ~/.config/skopos/pricing.toml) so the user
can refresh prices without recompiling.
The expected TOML shape is one [[model]] table per entry:
[[]]
= "anthropic"
= "claude-opus-4-7"
= 5.0
= 25.0
= 0.50