Function getModelCosts

src/models.ts:587–635

(model: string)

}

export function getModelCosts(model: string): ModelCosts | null {
  // Try with provider prefix preserved (azure/gpt-5.4, openrouter/anthropic/claude-opus-4.6)
  const withPrefix = model.replace(/@.*$/, '').replace(/-\d{8}$/, '')
  const canonicalName = getCanonicalName(model)
  const canonical = resolveAlias(canonicalName)

  const override = getPriceOverrideExact(model, withPrefix, canonicalName, canonical)
  if (override) return override

  // An explicit alias for a bare (un-prefixed) model name is authoritative: it
  // must win over a coincidental stripped reseller key of the same name. LiteLLM
  // ships `snowflake/claude-4-opus` ($5), which the bundler strips to a bare
  // `claude-4-opus` key; without this, that would shadow the curated alias
  // `claude-4-opus -> claude-opus-4` ($15 official Anthropic price).
  if (canonical !== canonicalName && withPrefix === canonicalName && pricingCache.has(canonical)) {
    return pricingCache.get(canonical)!
  }

  if (pricingCache.has(withPrefix)) return pricingCache.get(withPrefix)!

  if (pricingCache.has(canonical)) return pricingCache.get(canonical)!

  const prefixOverride = getPriceOverridePrefix(canonical)
  if (prefixOverride) return prefixOverride

  // Iterate keys longest-first so a model id like `gpt-5-mini` matches the
  // `gpt-5-mini` entry rather than collapsing to the shorter `gpt-5` entry
  // due to dictionary insertion order.
  for (const key of getSortedPricingKeys()) {
    if (canonical.startsWith(key + '-') || canonical === key) {
      return pricingCache.get(key)!
    }
  }

  const caseInsensitiveOverride = getPriceOverrideCaseInsensitive(canonical, withPrefix)
  if (caseInsensitiveOverride) return caseInsensitiveOverride

  // Case-insensitive fallback: gap-filled keys from OpenRouter are lowercase
  // slugs (e.g. `minimax-m3`), but sessions report `MiniMax-M3`. Only consulted
  // after the exact/canonical/prefix attempts, so it never changes a match that
  // already resolved above.
  const lowerIndex = getLowercasePricingIndex()
  const byCanonical = lowerIndex.get(canonical.toLowerCase())
  if (byCanonical) return byCanonical
  const byPrefix = lowerIndex.get(withPrefix.toLowerCase())
  if (byPrefix) return byPrefix

  return null
}

// Warn at most once per unknown model name per process. Without this, a model
// missing from the pricing snapshot would silently price at $0 for every