diff --git a/scripts/bench-kairic-ab.sh b/scripts/bench-kairic-ab.sh
new file mode 100755
index 0000000..211c9e1
--- /dev/null
+++ b/scripts/bench-kairic-ab.sh
@@ -0,0 +1,150 @@
+#!/usr/bin/env bash
+# bench-kairic-ab.sh — A/B perf isolation for the Kairic Edge deployment on
+# Dankclaw. Run this ON DANKCLAW (paths are absolute target paths).
+#
+# Configs:
+#   runner        pinned runner profile (b2048/ub512, reasoning off, target
+#                 greedy argmax fast path ON)
+#   nommap        runner + --no-mmap
+#   nofast        runner + fast path OFF
+#   prod          production profile (b4096/ub2048, reasoning on/deepseek,
+#                 fast path OFF, preserve_thinking)
+#   prodnommap    prod + --no-mmap
+#
+# Usage: ./scripts/bench-kairic-ab.sh <cfg> [ctx] [prompt_chars]
+# Example: ./scripts/bench-kairic-ab.sh prod 16384 53000
+#
+# The server runs on scratch port 7893. STOP frank-default-large before
+# benchmarking (see AGENTS.md). The server is killed on exit.
+set -uo pipefail
+CFG="${1:?runner|nofast|prod}"
+CTX="${2:-32768}"
+PCHARS="${3:-11000}"
+PORT=7893
+BIN=/home/dank/ciru-qwen38/ROCmFPX-kairic/build-kairic/bin/llama-server
+MDIR=/home/dank/models/Kairic-Qwen3.8-27B-IU4-Edge
+SDK=/home/dank/ling3-ciru/Ling-3.0-Flash-CIRU-int4-Strix-native/.venv/lib/python3.12/site-packages
+LOG=/tmp/kairic-ab-$CFG.log
+: > "$LOG"
+
+export ROCM_PATH="$SDK/_rocm_sdk_devel"
+export LD_LIBRARY_PATH="$(dirname "$BIN"):$SDK/_rocm_sdk_libraries/lib:$SDK/_rocm_sdk_core/lib:$SDK/_rocm_sdk_devel/lib"
+export HIP_VISIBLE_DEVICES=0
+export HSA_OVERRIDE_GFX_VERSION=11.5.1
+export GGML_CUDA_GRAPH_OPT=0
+export LLAMA_MTP_CPU_ARGMAX_FASTPATH=1
+export PROMPTFORGE_TARGET_ONLY=0
+export PROMPTFORGE_MODE=iu4_ffn
+export PROMPTFORGE_IU4_SIDECAR="$MDIR/Qwen3.8-27B-Kairic-IU4-FFN.pfs"
+export PROMPTFORGE_SIDECAR="$MDIR/Qwen3.8-27B-Kairic-IU4-FFN.pfs"
+export PROMPTFORGE_IU4_HADAMARD=1
+export PROMPTFORGE_IU4_SEGMENTED=0
+export PROMPTFORGE_ENABLE_FFN_KEEPERS=0
+export PROMPTFORGE_FFN_KEEPERS=late6
+export PROMPTFORGE_ENABLE_GDN=1
+export PROMPTFORGE_ENABLE_GDN_W8=0
+export PROMPTFORGE_GDN_SIDECAR_OVERRIDE="$MDIR/Qwen3.8-27B-Kairic-IU4-GDN.pfs"
+export PROMPTFORGE_GDN_SIDECAR="$MDIR/Qwen3.8-27B-Kairic-IU4-GDN.pfs"
+export PROMPTFORGE_GDN_IU4_HADAMARD=1
+export PROMPTFORGE_ENABLE_GDN_KEEPERS=0
+export PROMPTFORGE_ENABLE_GDN_OUTPUT=1
+export PROMPTFORGE_GDN_OUTPUT_SIDECAR="$MDIR/Qwen3.8-27B-Kairic-IU4-GDN-Output.pfs"
+export PROMPTFORGE_GDN_OUTPUT_KEEPERS=v3_lateq6
+export PROMPTFORGE_ENABLE_SMALLM_IU4=1
+export PROMPTFORGE_ENABLE_SMALLM_GDN_IU4=1
+export PROMPTFORGE_ENABLE_SMALLM_GDN_OUTPUT_IU4=0
+export PROMPTFORGE_ENABLE_IU4_DECODE_M2_M5=0
+export PROMPTFORGE_OUTPUT_K8_STRICT_GREEDY=0
+
+MMAP=""
+case "$CFG" in
+  runner)  export LLAMA_TARGET_GREEDY_ARGMAX_FASTPATH=1; B=2048; UB=512;  REA=off;  RFMT=none;     EXTRA="" ;;
+  nommap)  export LLAMA_TARGET_GREEDY_ARGMAX_FASTPATH=1; B=2048; UB=512;  REA=off;  RFMT=none;     EXTRA=""; MMAP="--no-mmap" ;;
+  nofast)  export LLAMA_TARGET_GREEDY_ARGMAX_FASTPATH=0; B=2048; UB=512;  REA=off;  RFMT=none;     EXTRA="" ;;
+  prod)    export LLAMA_TARGET_GREEDY_ARGMAX_FASTPATH=0; B=4096; UB=2048; REA=on;   RFMT=deepseek; EXTRA="--chat-template-kwargs {\"preserve_thinking\":\"true\"}" ;;
+  prodnommap) export LLAMA_TARGET_GREEDY_ARGMAX_FASTPATH=0; B=4096; UB=2048; REA=on; RFMT=deepseek; EXTRA="--chat-template-kwargs {\"preserve_thinking\":\"true\"}"; MMAP="--no-mmap" ;;
+esac
+
+"$BIN" -m "$MDIR/Qwen3.8-27B-IU4-Kairic-Edge.gguf" \
+  --alias bench --host 127.0.0.1 --port "$PORT" --jinja \
+  -dev ROCm0 -ngl 999 -c "$CTX" -b "$B" -ub "$UB" -fa on -ctk f16 -ctv f16 \
+  -t 16 -tb 32 -np 1 -ctxcp 32 --cache-ram 8192 --cache-prompt --cache-idle-slots $MMAP \
+  --metrics --kairic-edge \
+  --spec-type draft-mtp --spec-draft-device ROCm0 --spec-draft-ngl 999 \
+  --spec-draft-type-k f16 --spec-draft-type-v f16 \
+  --spec-draft-n-max 4 --spec-draft-n-min 0 --spec-draft-p-min 0.0 --spec-draft-p-split 0.10 \
+  --spec-draft-backend-sampling \
+  --temp 0 --top-p 1.0 --top-k 0 --min-p 0.0 \
+  --reasoning "$REA" --reasoning-format "$RFMT" --reasoning-budget -1 \
+  $EXTRA >> "$LOG" 2>&1 &
+SPID=$!
+trap 'kill $SPID 2>/dev/null; wait $SPID 2>/dev/null' EXIT
+
+for i in $(seq 1 300); do
+  kill -0 $SPID 2>/dev/null || { echo "SERVER DIED"; tail -20 "$LOG"; exit 2; }
+  curl -sf "http://127.0.0.1:$PORT/health" >/dev/null 2>&1 && break
+  sleep 2
+done
+echo "=== CFG=$CFG ready ==="
+
+python3 - "$PORT" "$CFG" "$PCHARS" <<'PY'
+import sys, json, time, urllib.request
+port, cfg, pchars = sys.argv[1], sys.argv[2], int(sys.argv[3])
+VAR = [
+    "narrative nonfiction blends observation with reflection, ",
+    "and a careful writer lets each clause earn its place ",
+    "in the sentence's rising line, so meaning accumulates slowly. ",
+    "The reader is not hurried; the reader is led. Loose and periodic, ",
+    "the style turns on concrete nouns and verbs that carry weight. ",
+    "A paragraph is not a list but a single turn of thought that ",
+    "opens, develops, and lands, and clarity is a courtesy owed ",
+    "to the willing reader who gives the writer their attention. ",
+]
+parts = []
+t = 0
+while len("".join(parts)) < pchars:
+    for k in range(3):
+        parts.append(VAR[(t + k) % len(VAR)])
+    parts.append(f" Note {t}. ")
+    t += 1
+longtext = "".join(parts)
+prompt = longtext + "\n\nNow write a long, detailed continuation of this essay (at least five paragraphs) about the philosophy of language.\n"
+body = {
+    "model": "bench",
+    "prompt": prompt,
+    "max_tokens": 512,
+    "temperature": 0,
+    "top_p": 1.0,
+    "top_k": 0,
+    "min_p": 0.0,
+    "stream": False,
+    "cache_prompt": True,
+}
+# ignore_eos is rejected by the exact-Q8 greedy argmax fast path (runner cfg).
+if cfg not in ("runner",):
+    body["ignore_eos"] = True
+def run(tag):
+    req = urllib.request.Request(f"http://127.0.0.1:{port}/v1/completions",
+                                 data=json.dumps(body).encode(),
+                                 headers={"Content-Type": "application/json"})
+    t0 = time.time()
+    try:
+        with urllib.request.urlopen(req, timeout=3600) as resp:
+            out = json.load(resp)
+    except Exception as e:
+        body_txt = getattr(e, "read", lambda: b"")()
+        print(f"[{tag}] REQUEST FAILED: {e}")
+        print(f"[{tag}] body: {body_txt.decode('utf-8', 'ignore')[:500]}")
+        raise SystemExit(3)
+    wall = time.time() - t0
+    u = out.get("usage", {})
+    tm = out.get("timings", {})
+    pt = u.get("prompt_tokens", 0); ct = u.get("completion_tokens", 0)
+    pps = tm.get("prompt_per_second", 0); tps = tm.get("predicted_per_second", 0)
+    print(f"[{tag}] cfg={cfg} prompt={pt} completion={ct} prefill={pps:.1f} t/s decode={tps:.2f} t/s wall={wall:.1f}s")
+run("cold")
+run("warm")
+PY
+
+grep -E "print_timing|statistics" "$LOG" | tail -6
+exit 0
diff --git a/scripts/bench-spec-stack.sh b/scripts/bench-spec-stack.sh
index 0f7893d..005b089 100644
--- a/scripts/bench-spec-stack.sh
+++ b/scripts/bench-spec-stack.sh
@@ -19,6 +19,15 @@ OUT_TOKENS="${3:-256}"
 ENV_FILE=/home/dank/vllmScripts/scripts/frank-default-large.env
 source "$ENV_FILE"
 
+# This harness benchmarks the retired v3 stack. Force the v3 values so the
+# harness works regardless of the live service env (now Kairic).
+MODEL_DIR=/home/dank/models/CIRU-Qwen3.8-27B-ActiveFPX-v3
+MODEL_FILE=Qwen3.8-27B-CIRU-ActiveFPX-PromptForge-v3-Q8-FFNEQ-LateQ6.gguf
+FFN_PFS=Qwen3.8-27B-CIRU-ActiveFPX-PromptForge-FFN.pfs
+GDN_PFS=Qwen3.8-27B-CIRU-ActiveFPX-PromptForge-GDN.pfs
+OUTPUT_K8_PFS=Qwen3.8-27B-CIRU-ActiveFPX-PromptForge-Output-K8.pfs
+MMPROJ_FILE=Qwen3.8-27B-mmproj-BF16.mmproj
+
 # Derive the PromptForge sidecar paths from the env base values.
 export PROMPTFORGE_SIDECAR="$MODEL_DIR/$FFN_PFS"
 export PROMPTFORGE_GDN_SIDECAR="$MODEL_DIR/$GDN_PFS"