Function stripDateSuffix

observability/mastra/src/metrics/pricing-registry.ts:237–249

* Strip date suffix from model names. * Handles multiple date formats used by different providers: * - OpenAI: YYYY-MM-DD at end (e.g., "gpt-5-4-mini-2026-03-17" → "gpt-5-4-mini") * - Anthropic: YYYYMMDD with optional suffix (e.g., "claude-sonnet-4-5-20250929-thinking" → "claude-sonnet-4-5-thinki

(model: string)

 * - Cohere/Gemini: MM-YYYY at end (e.g., "command-r-08-2024" → "command-r")
 */
function stripDateSuffix(model: string): string {
  // OpenAI format: -YYYY-MM-DD at end
  let stripped = model.replace(/-20\d{2}-\d{2}-\d{2}$/, '');
  if (stripped !== model) return stripped;

  // Anthropic format: -YYYYMMDD, possibly followed by suffix like -thinking
  stripped = model.replace(/-20\d{6}(-[a-z]+)?$/, '$1');
  if (stripped !== model) return stripped;

  // Cohere/Gemini format: -MM-YYYY at end
  stripped = model.replace(/-\d{2}-20\d{2}$/, '');
  return stripped;
}