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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.218

Pricing Records: canonicalModel and provider Fields

Two new optional fields appear in per-model usage/pricing records:

  • canonicalModel: The canonical model ID used for the pricing lookup (e.g., claude-opus-4-7). May differ from the raw model string when provider-specific IDs or aliases are in use.
  • provider: The API provider that served the model: 'firstParty', 'bedrock', 'vertex', 'foundry', 'anthropicAws', 'anthropicGoogleCloud', 'mantle', 'gateway'.

These fields are useful for hooks and third-party cost tracking tools that need to normalize model identifiers across providers.

Evidence

New schema fields (search for "Canonical model id used for the pricing lookup")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.218 →