[Model] Upstream Deepseek-OCR model (#27247)

Signed-off-by: Isotr0py <mozf@mail2.sysu.edu.cn>
Signed-off-by: Roger Wang <hey@rogerw.io>
Co-authored-by: Roger Wang <hey@rogerw.io>

Author: Isotr0py

docs/models/supported_models.md

@@ -639,6 +639,7 @@ These models primarily accept the [`LLM.generate`](./generative_models.md#llmgen
 | `ChameleonForConditionalGeneration` | Chameleon | T + I | `facebook/chameleon-7b`, etc. | | ✅︎ |
 | `Cohere2VisionForConditionalGeneration` | Command A Vision | T + I<sup>+</sup> | `CohereLabs/command-a-vision-07-2025`, etc. | | ✅︎ |
 | `DeepseekVLV2ForCausalLM`<sup>^</sup> | DeepSeek-VL2 | T + I<sup>+</sup> | `deepseek-ai/deepseek-vl2-tiny`, `deepseek-ai/deepseek-vl2-small`, `deepseek-ai/deepseek-vl2`, etc. | | ✅︎ |
+| `DeepseekOCRForCausalLM` | DeepSeek-OCR | T + I<sup>+</sup> | `deepseek-ai/DeepSeek-OCR`, etc. | | ✅︎ |
 | `Ernie4_5_VLMoeForConditionalGeneration` | Ernie4.5-VL | T + I<sup>+</sup>/ V<sup>+</sup> | `baidu/ERNIE-4.5-VL-28B-A3B-PT`, `baidu/ERNIE-4.5-VL-424B-A47B-PT` | | ✅︎ |
 | `FuyuForCausalLM` | Fuyu | T + I | `adept/fuyu-8b`, etc. | | ✅︎ |
 | `Gemma3nForConditionalGeneration` | Gemma 3n | T + I + A | `google/gemma-3n-E2B-it`, `google/gemma-3n-E4B-it`, etc. | | |

examples/offline_inference/vision_language.py

@@ -30,6 +30,7 @@ class ModelRequestData(NamedTuple):
     prompts: list[str]
     stop_token_ids: list[int] | None = None
     lora_requests: list[LoRARequest] | None = None
+    sampling_params: list[SamplingParams] | None = None
 
 
 # NOTE: The default `max_num_seqs` and `max_model_len` may result in OOM on
@@ -153,23 +154,6 @@ def run_chameleon(questions: list[str], modality: str) -> ModelRequestData:
     )
 
 
-# Dots-OCR
-def run_dots_ocr(questions: list[str], modality: str) -> ModelRequestData:
-    assert modality == "image"
-
-    prompts = [f"<|img|><|imgpad|><|endofimg|>{question}" for question in questions]
-    engine_args = EngineArgs(
-        model="rednote-hilab/dots.ocr",
-        limit_mm_per_prompt={modality: 1},
-        trust_remote_code=True,
-    )
-
-    return ModelRequestData(
-        engine_args=engine_args,
-        prompts=prompts,
-    )
-
-
 def run_command_a_vision(questions: list[str], modality: str) -> ModelRequestData:
     assert modality == "image"
 
@@ -217,6 +201,66 @@ def run_deepseek_vl2(questions: list[str], modality: str) -> ModelRequestData:
     )
 
 
+def run_deepseek_ocr(questions: list[str], modality: str) -> ModelRequestData:
+    from vllm.model_executor.models.deepseek_ocr import NGramPerReqLogitsProcessor
+
+    assert modality == "image"
+
+    model_name = "deepseek-ai/DeepSeek-OCR"
+
+    engine_args = EngineArgs(
+        model=model_name,
+        limit_mm_per_prompt={modality: 1},
+        logits_processors=[NGramPerReqLogitsProcessor],
+    )
+
+    # deepseek-ocr use plain prompt template
+    prompts = [f"<image>\n{question}" for question in questions]
+
+    # The following sampling params config is taken from
+    # the official Deepseek-OCR inference example.
+    # (IMPORTANT) Use the custom logits processor and avoid skipping
+    # special tokens for this model for the optimal OCR performance.
+    sampling_params = [
+        SamplingParams(
+            temperature=0.0,
+            max_tokens=8192,
+            # ngram logit processor args
+            extra_args=dict(
+                ngram_size=30,
+                window_size=90,
+                # whitelist: <td>, </td>
+                whitelist_token_ids={128821, 128822},
+            ),
+            skip_special_tokens=False,
+        )
+        for _ in questions
+    ]
+
+    return ModelRequestData(
+        engine_args=engine_args,
+        prompts=prompts,
+        sampling_params=sampling_params,
+    )
+
+
+# Dots-OCR
+def run_dots_ocr(questions: list[str], modality: str) -> ModelRequestData:
+    assert modality == "image"
+
+    prompts = [f"<|img|><|imgpad|><|endofimg|>{question}" for question in questions]
+    engine_args = EngineArgs(
+        model="rednote-hilab/dots.ocr",
+        limit_mm_per_prompt={modality: 1},
+        trust_remote_code=True,
+    )
+
+    return ModelRequestData(
+        engine_args=engine_args,
+        prompts=prompts,
+    )
+
+
 # Ernie4.5-VL
 def run_ernie45_vl(questions: list[str], modality: str) -> ModelRequestData:
     model_name = "baidu/ERNIE-4.5-VL-28B-A3B-PT"
@@ -1738,9 +1782,10 @@ def run_tarsier2(questions: list[str], modality: str) -> ModelRequestData:
     "bee": run_bee,
     "blip-2": run_blip2,
     "chameleon": run_chameleon,
-    "dots_ocr": run_dots_ocr,
     "command_a_vision": run_command_a_vision,
     "deepseek_vl_v2": run_deepseek_vl2,
+    "deepseek_ocr": run_deepseek_ocr,
+    "dots_ocr": run_dots_ocr,
     "ernie45_vl": run_ernie45_vl,
     "fuyu": run_fuyu,
     "gemma3": run_gemma3,
@@ -2003,8 +2048,12 @@ def main(args):
 
     # We set temperature to 0.2 so that outputs can be different
     # even when all prompts are identical when running batch inference.
-    sampling_params = SamplingParams(
-        temperature=0.2, max_tokens=64, stop_token_ids=req_data.stop_token_ids
+    sampling_params = (
+        SamplingParams(
+            temperature=0.2, max_tokens=64, stop_token_ids=req_data.stop_token_ids
+        )
+        if req_data.sampling_params is None
+        else req_data.sampling_params
     )
 
     assert args.num_prompts > 0

tests/models/registry.py

@@ -585,6 +585,9 @@ def check_available_online(
         transformers_version_reason="HF model is not compatible.",
         hf_overrides={"architectures": ["DeepseekVLV2ForCausalLM"]},
     ),
+    "DeepseekOCRForCausalLM": _HfExamplesInfo(
+        "deepseek-ai/DeepSeek-OCR",
+    ),
     "DotsOCRForCausalLM": _HfExamplesInfo(
         "rednote-hilab/dots.ocr", trust_remote_code=True
     ),