Docs: Update benchmark for openai/gpt-5.4

tests/9_stream_visualizer/outputs/openai_gpt-5.4.js

@@ -0,0 +1,48 @@
+export async function createStreamVisualizer(asyncIterable, options = {}) {
+  const {
+    maxPoints = 500,
+    alpha = 0.2,
+    width = 800,
+    height = 300,
+    yDomain = [0, 1]
+  } = options
+
+  const d3 = await import('https://cdn.jsdelivr.net/npm/d3@7/+esm')
+
+  const cap = Math.max(1, maxPoints | 0)
+  const a = Math.min(1, Math.max(0, Number(alpha)))
+  const data = []
+  let prevEma
+
+  for await (const item of asyncIterable) {
+    const timestamp = Number(item?.timestamp)
+    const value = Number(item?.value)
+
+    if (!Number.isFinite(timestamp) || !Number.isFinite(value)) continue
+
+    prevEma = prevEma === undefined ? value : a * value + (1 - a) * prevEma
+    data.push({ timestamp, value, ema: prevEma })
+
+    if (data.length > cap) data.splice(0, data.length - cap)
+  }
+
+  if (!data.length) return { data, path: '' }
+
+  const first = data[0].timestamp
+  const last = data[data.length - 1].timestamp
+  const x0 = first === last ? first - 1 : first
+  const x1 = first === last ? last + 1 : last
+
+  const x = d3.scaleLinear().domain([x0, x1]).range([0, width])
+  const y = d3.scaleLinear().domain(yDomain).range([height, 0])
+
+  const path =
+    d3.line()
+      .x(d => x(d.timestamp))
+      .y(d => y(d.ema))(data) || ''
+
+  return { data, path }
+}
+export default createStreamVisualizer;
+// Generation time: 4.457s
+// Result: PASS