v1.2: options encoded side by side; answers do not depend on option order

README.md

@@ -18,6 +18,8 @@ tags:
 
 # circuit-vl-4b
 
+**v1.2** (2026-09-22). The options of a choice question are encoded side by side, so the answer cannot depend on the order they are listed in: 0.0% of answers change under reordering on its grid (v1.1: 3.6%); grid .967 / ECE .021, POPE .907 / .069. `config.json` carries `"parallel_options": true`; serve it with the circuit repo's scorer, which applies the mask. See [Versions](#versions).
+
 **v1.1.** Same base, head and recipe as v1.0, with real photographs (Open Images V7, human-verified labels) added to the training data. "Vision grid v2" below names the dataset, not the model. See [Versions](#versions).
 
 A **System One** decision model for images: a state that carries one or
@@ -84,6 +86,7 @@ threshold.
 
 | tag | date | what changed |
 |---|---|---|
+| `v1.2` | 2026-09-22 | Options encoded side by side: order-stable answers. Same data and recipe as v1.1 otherwise. |
 | `v1.1` | 2026-09 | Trains on vision grid v2: the rendered cells plus three cells of real photographs. |
 | `v1.0` | 2026-09 | First release, rendered or scripted data only. |
 

adapter/adapter_model.safetensors

@@ -1,3 +1,3 @@
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 size 132195448

config.json

@@ -12,30 +12,44 @@
   "<|box_end|>",
   "<|fim_middle|>"
  ],
+ "parallel_options": true,
+ "temperatures": {
+  "noul": 1.75,
+  "choice": 1.75,
+  "score": 1.0
+ },
  "best": {
-  "ece": 0.03463481445061533,
+  "ece": 0.03482257006199742,
   "accuracy": 0.9671052631578947,
-  "kl": 0.08838354297811024,
+  "kl": 0.09835513901895927,
+  "ece_by_type": {
+   "noul": 0.04722936921998076,
+   "choice": 0.031651588013538984
+  },
+  "ece_worst": 0.04722936921998076,
   "step": 600
  },
  "args": {
   "model": "Qwen/Qwen3-VL-4B-Instruct",
   "data": "data/vision/grid/train.jsonl",
-  "out": "runs/circuit-vl-4b-v2",
+  "out": "runs/circuit-vl-4b-par",
   "epochs": 2,
-  "batch": 2,
+  "batch": 4,
   "lr": 0.0001,
   "head_lr": 0.001,
   "rank": 16,
   "max_length": 1536,
   "val_frac": 0.1,
-  "eval_every": 150,
+  "eval_every": 100,
   "limit": null,
   "seed": 0,
   "dtype": "bfloat16",
-  "grad_checkpoint": false,
+  "acc_floor": 0.01,
+  "parallel_options": true,
+  "micro": 0,
+  "grad_checkpoint": true,
   "wandb": "s1proto",
-  "run_name": "circuit-vl-4b-v2",
+  "run_name": "circuit-vl-4b-par",
   "resume": false,
   "head": "pointer",
   "load_4bit": false,

head.pt

@@ -1,3 +1,3 @@
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