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fix(costs): retain dated Opus 4 legacy pricing
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@@ -82,12 +82,16 @@ const RATE_TABLE = {
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fable: { in: 10.00, out: 50.0, cacheWrite: 12.50, cacheRead: 1.00 }
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};
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// Opus 4.0's dated snapshot omits the minor segment, so an `opus-4-0`
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// substring check alone misses `claude-opus-4-20250514`.
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const LEGACY_OPUS_RE = /3-opus|opus-4-0(?!\d)|opus-4-1(?!\d)|opus-4[-@]\d{8}/;
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function getRates(model) {
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const m = String(model || '').toLowerCase();
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if (m.includes('fable') || m.includes('mythos')) return RATE_TABLE.fable;
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if (m.includes('haiku')) return RATE_TABLE.haiku;
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if (isSonnet5(m)) return RATE_TABLE.sonnet5;
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if (m.includes('opus-4-1') || m.includes('opus-4-0') || m.includes('3-opus')) return RATE_TABLE.opusLegacy;
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if (LEGACY_OPUS_RE.test(m)) return RATE_TABLE.opusLegacy;
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if (m.includes('opus')) return RATE_TABLE.opus;
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return RATE_TABLE.sonnet;
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}
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