Update README.md

README.md

@@ -335,10 +335,37 @@ I44 is designed to retain much of that performance benefit while excluding the i
 ### Current I44 benchmark status
 
 ```text
-D48 + O44 + I44 performance: pending final benchmark result
-```
+## D48 + O44 + I44 performance
+
+The I44 candidate was benchmarked against D48 + O44 and the performance-only I64 ceiling on the same physical RTX PRO 4000 Blackwell GPU.
+
+| Test | Metric | D48 + O44 | I44 | I44 gain | I64 ceiling | Ceiling retained |
+|---|---|---:|---:|---:|---:|---:|
+| pp512 | prefill | 840.81 | 973.42 | +15.77% | 1047.02 | 64.3% |
+| pp2048 | prefill | 850.04 | 998.64 | +17.48% | 1086.12 | 62.9% |
+| pp8192 | prefill | 790.06 | 945.86 | +19.72% | 1029.31 | 65.1% |
+| tg256 | decode | 19.06 | 20.52 | +7.68% | 21.19 | 68.5% |
+| tg1024 | decode | 18.72 | 19.78 | +5.64% | 20.33 | 65.5% |
+| pp2048+tg512 | prefill | 765.80 | 899.07 | +17.40% | 988.97 | 59.7% |
+| pp2048+tg512 | decode | 18.70 | 19.68 | +5.23% | 20.37 | 58.7% |
+| pp8192+tg512 | prefill | 754.14 | 886.13 | +17.50% | 964.10 | 62.9% |
+| pp8192+tg512 | decode | 18.52 | 19.40 | +4.74% | 20.08 | 56.3% |
+
+Summary:
 
-The README will be updated with the measured I44 throughput and fraction of the I64 speed ceiling retained once that run is frozen.
+- **Mean I44 prefill gain:** +17.576%
+- **Mean I44 decode gain:** +5.822%
+- **Mean prefill I64 ceiling retained:** 63.0%
+- **Mean decode I64 ceiling retained:** 62.2%
+
+Artifact details:
+
+```text
+artifact bytes  = 16,371,739,140
+runtime weights = 16,358,539,264
+workspace       = 159,981,568
+SHA256          = 09babb880c5d0ea112005ec6701ab7e6a074683318c0ac47cefbe60b80d55040
+```
 
 ---