diff --git a/docs/cli.md b/docs/cli.md
index d3ebe21..6cd09b4 100644
--- a/docs/cli.md
+++ b/docs/cli.md
@@ -90,7 +90,8 @@ and does not set `is_ai_generated`.
 
 The contract is AI versus camera. Receipts, UI, and digital art are out of
 scope. Microsoft is not a pixel class: a DALL-E Bing image scores as `openai`,
-an Imagen Designer image as `google`. Weights download on first use from
+an Imagen Designer image as `google`. `tc260` is the China AIGC label
+standard, not one producer. Weights download on first use from
 [`wiltodelta/raiw-models`](https://huggingface.co/wiltodelta/raiw-models),
 or from `RAIW_CLASSIFY_WEIGHTS` if that directory already holds the freeze
 files.
diff --git a/docs/module-internals.md b/docs/module-internals.md
index d0f547e..d0b9834 100644
--- a/docs/module-internals.md
+++ b/docs/module-internals.md
@@ -587,8 +587,9 @@ derived results influence detection.
 [`classify.py`](../src/remove_ai_watermarks/classify.py) is the 2026-08-31
 photo freeze: CLIP-L-ft ridge AND freeze MLP, then 124-d focal heads only on
 DEFINITELY. The public label is `ai` / `human` / `unknown`. POSSIBLY is
-`unknown`. Provider is `openai` / `google` / `muse-image` / `tc260` / `None`.
-The freeze file keys the Muse Image head `meta_muse_image`. Tests in
+`unknown`. The named class is `openai` / `google` / `muse-image` / `tc260` /
+`None`. `tc260` is the China AIGC label standard, not one producer. The freeze
+file keys the Muse Image head `meta_muse_image`. Tests in
 `tests/test_classify.py` pin the gate without downloads and pin that
 `identify` does not import this module.
 
diff --git a/docs/photo-classify-hf/README.md b/docs/photo-classify-hf/README.md
index 665cb96..a52aeae 100644
--- a/docs/photo-classify-hf/README.md
+++ b/docs/photo-classify-hf/README.md
@@ -89,9 +89,10 @@ remain open. The shipped heads do not include a receipt specialist.
 Provider attribution tracks the **renderer**, not the front-end. Bing Image
 Creator rows signed Microsoft, OpenAI score as `openai`. Designer rows signed
 Microsoft, Google LLC score as `google`. Native Designer is mixed. There is
-no Microsoft pixel class. `openai`, `google`, and `tc260` are provider classes.
+no Microsoft pixel class. `openai` and `google` are provider classes.
 `muse-image` is Muse Image output, not a general Meta class. Instagram
-`made_with_ai` is not that class.
+`made_with_ai` is not that class. `tc260` is the China AIGC label standard,
+not one producer: Doubao, Jimeng, Qwen, Kling, and others share that class.
 
 ## Architecture
 
@@ -117,8 +118,9 @@ no Microsoft pixel class. `openai`, `google`, and `tc260` are provider classes.
 - Decision: a class wins only if it beats `no_ai` by margin 0.30, then argmax
   among those that passed
 - Public name `muse-image` is the Muse Image class. The freeze file still
-  keys that head `meta_muse_image`. `no_ai` is not reported as `human`; it
-  becomes `provider=None` on an `ai` label (for example FLUX)
+  keys that head `meta_muse_image`. `tc260` is the China AIGC label
+  standard (mixed producers), not a company. `no_ai` is not reported as
+  `human`; it becomes `provider=None` on an `ai` label (for example FLUX)
 
 ## Training
 
@@ -158,13 +160,13 @@ DEFINITELY is the shipped operating point.
 | Detector DEFINITELY | Open Images fresh | 1.3% (n=3,000) |
 | Detector DEFINITELY | Kodak | 0/24 |
 | Detector DEFINITELY | FLUX hold | 83.0% (n=300) |
-| Provider | OpenAI test | 90.8% (345/380 of 381) |
-| Provider | Google test | 90.9% (339/373 of 377) |
-| Provider | TC260 test | 78.6% (298/379 of 384) |
-| Provider | Meta hold-out v2 | 85.7% (66/77 listed 79) |
-| Provider | Meta hold-out v3 | 89.4% (177/198) |
-| Provider | Meta hold-out pooled | 88.4% (243/275 listed 277) |
-| Provider | meme templates, ungated | 29.1% leak (86 of 97) |
+| Class | OpenAI test | 90.8% (345/380 of 381) |
+| Class | Google test | 90.9% (339/373 of 377) |
+| Class | TC260 test | 78.6% (298/379 of 384) |
+| Class | Muse Image hold-out v2 | 85.7% (66/77 listed 79) |
+| Class | Muse Image hold-out v3 | 89.4% (177/198) |
+| Class | Muse Image hold-out pooled | 88.4% (243/275 listed 277) |
+| Class | meme templates, ungated | 29.1% leak (86 of 97) |
 
 The ungated meme leak is why Model 2 must not run on every file. Gated on
 DEFINITELY, that leak is not a provider attribution.
diff --git a/docs/photo-classify-hf/operating-point.json b/docs/photo-classify-hf/operating-point.json
index 29f9770..18084e7 100644
--- a/docs/photo-classify-hf/operating-point.json
+++ b/docs/photo-classify-hf/operating-point.json
@@ -22,6 +22,13 @@
     "feature_width": 124,
     "margin": 0.3,
     "classes": ["openai", "google", "tc260", "muse-image", "no_ai"],
+    "class_kind": {
+      "openai": "provider",
+      "google": "provider",
+      "tc260": "label-standard",
+      "muse-image": "model",
+      "no_ai": "negative"
+    },
     "checkpoint_keys": {
       "muse-image": "meta_muse_image"
     },
diff --git a/docs/photo-classify-training.md b/docs/photo-classify-training.md
index 9235b76..bd243d2 100644
--- a/docs/photo-classify-training.md
+++ b/docs/photo-classify-training.md
@@ -79,7 +79,8 @@ construction and fits the same heads from the pack above.
 2. AND that MLP with the frozen ridge in the probe file. DEFINITELY is both.
 3. Load 124-d vectors. Fit one-vs-rest focal heads for openai, google, tc260,
    meta_muse_image, no_ai. Margin 0.30. The public class for the Muse Image
-   head is `muse-image`.
+   head is `muse-image`. `tc260` is the China AIGC label standard, mixed
+   producers, not one company.
 4. Repeat with the same seeds. Compare bytes.
 
 CLIP-L fine-tune of the last two vision blocks is earlier, seed 20260822, and
diff --git a/docs/photo-classify.md b/docs/photo-classify.md
index 27ada87..740e2a7 100644
--- a/docs/photo-classify.md
+++ b/docs/photo-classify.md
@@ -84,9 +84,10 @@ wrong job on that bank, which is why Model 2 is gated.
 
 Provider names the renderer, not the product UI. Bing Image Creator signed
 Microsoft, OpenAI scores `openai`. Designer signed Microsoft, Google LLC
-scores `google`. There is no Microsoft pixel class. `openai`, `google`, and
-`tc260` are provider classes. `muse-image` is Muse Image output, not a
-general Meta class and not an Instagram `made_with_ai` tag.
+scores `google`. There is no Microsoft pixel class. `openai` and `google` are
+provider classes. `muse-image` is Muse Image output, not a general Meta
+class. `tc260` is the China AIGC label standard, not one producer: Doubao,
+Jimeng, Qwen, Kling, and others share that residual class.
 
 ## Evaluation
 
@@ -98,12 +99,12 @@ Two CPU retrains were byte-identical. DEFINITELY is the shipped cut.
 | Detector DEFINITELY | Open Images fresh | 1.3% (n=3,000) |
 | Detector DEFINITELY | Kodak | 0/24 |
 | Detector DEFINITELY | FLUX hold | 83.0% (n=300) |
-| Provider | OpenAI | 90.8% (345/380 of 381) |
-| Provider | Google | 90.9% (339/373 of 377) |
-| Provider | TC260 | 78.6% (298/379 of 384) |
-| Provider | Meta hold-out v3 | 89.4% (177/198) |
-| Provider | Meta hold-out pooled | 88.4% (243/275 listed 277) |
-| Provider | meme templates, ungated | 29.1% leak |
+| Class | OpenAI | 90.8% (345/380 of 381) |
+| Class | Google | 90.9% (339/373 of 377) |
+| Class | TC260 | 78.6% (298/379 of 384) |
+| Class | Muse Image hold-out v3 | 89.4% (177/198) |
+| Class | Muse Image hold-out pooled | 88.4% (243/275 listed 277) |
+| Class | meme templates, ungated | 29.1% leak |
 
 The ungated meme row is why Model 2 never runs on `human` or `unknown`.
 
diff --git a/docs/python-api.md b/docs/python-api.md
index 41f757b..464f99e 100644
--- a/docs/python-api.md
+++ b/docs/python-api.md
@@ -161,7 +161,8 @@ print(result.label, result.detector, result.provider)
 `label` is `ai` only on a DEFINITELY detector result (ridge AND freeze MLP).
 POSSIBLY is `unknown`. Camera-like photographs are `human`. `provider` is
 `openai`, `google`, `muse-image`, or `tc260` only when `label` is `ai` and the 124-d
-head beats `no_ai` by the freeze margin. Otherwise it is `None`, including
+head beats `no_ai` by the freeze margin. `tc260` is the China AIGC label
+standard (mixed producers), not a company. Otherwise it is `None`, including
 when 124-d extraction refuses the file.
 
 `device` is a library parameter: `None` / `"auto"` detect, `"cpu"` or `"cuda"`
diff --git a/src/remove_ai_watermarks/classify.py b/src/remove_ai_watermarks/classify.py
index c617dd7..4ad9295 100644
--- a/src/remove_ai_watermarks/classify.py
+++ b/src/remove_ai_watermarks/classify.py
@@ -35,8 +35,9 @@ MLP_THRESHOLD = 5.9586493237495395
 RIDGE_THRESHOLD = 0.3056212276800537
 PROVIDER_MARGIN = 0.30
 CLIP_WIDTH = 768
-# Checkpoint keys in provider.pt. openai/google/tc260 are provider classes;
-# meta_muse_image is Muse Image output. Public names follow that split.
+# Checkpoint keys in provider.pt. openai/google are provider classes;
+# meta_muse_image is Muse Image; tc260 is the China AIGC label standard
+# (mixed producers). Public names follow that split.
 PROVIDER_LABELS = ("openai", "google", "tc260", "meta_muse_image", "no_ai")
 
 DetectorLevel = Literal["definitely", "possibly", "likely_human"]
diff --git a/tests/test_classify.py b/tests/test_classify.py
index 5768b87..9c642da 100644
--- a/tests/test_classify.py
+++ b/tests/test_classify.py
@@ -56,6 +56,10 @@ def test_shipped_operating_point_matches_the_runtime_defaults() -> None:
     assert payload["model2"]["margin"] == PROVIDER_MARGIN
     assert payload["model2"]["runs_only_after"] == "definitely"
     assert payload["model2"]["classes"] == ["openai", "google", "tc260", "muse-image", "no_ai"]
+    assert payload["model2"]["class_kind"]["openai"] == "provider"
+    assert payload["model2"]["class_kind"]["google"] == "provider"
+    assert payload["model2"]["class_kind"]["tc260"] == "label-standard"
+    assert payload["model2"]["class_kind"]["muse-image"] == "model"
     assert payload["model2"]["checkpoint_keys"]["muse-image"] == "meta_muse_image"