Head to head · OCR · October 2026 research run

HunyuanOCR 1.5 vs Nemotron 3.5 Parse

Nemotron 3.5 Parse scores 69 (B) on agent readiness against HunyuanOCR 1.5's 56.6 (C), and leads in 2 of 4 scored categories. HunyuanOCR 1.5 leads on agent interface. Both do ocr.

Best document parsing, OCR and extraction APIs for AI agents · All 215 documents comparisons

Which one, for what

HunyuanOCR 1.5 C

Best for Teams outside the EU, the UK and South Korea that want one small model for OCR, extraction and image translation

Ahead on

  • Agent interface, 80 against 70

Watch for

The licence doesn't apply in the EU, the UK or South Korea

Nemotron 3.5 Parse B

Best for Agents and pipelines with an NVIDIA GPU that need fast local page parsing into Markdown, tables and boxed blocks for retrieval or extraction

Ahead on

  • Risk, 60 against 45
  • Documentation and upkeep, 59 against 48

Watch for

Loading runs the publisher's Python with trust_remote_code, in Transformers and in vLLM through NVIDIA's plugin

Why the edge

Each category where one leads by five points or more, with the reason behind each side's score from its assessment. The numbers are in the table below; this is what they stand for.

Risk Nemotron 3.5 Parse +15

HunyuanOCR 1.5 45

File safety 25, safetensors only, no .bin, .pt or .pth files, and no Python at the root. Provenance 15, the files sit in the tencent organisation, which Tencent's GitHub repository for the model links to (10), and the Hub gives a SHA-256 for the large files (5). Safety evaluation 0, no safety results on the card. Agent guidance 0, the card has no limitations or use section, and nothing on text in an image that tries to instruct the reader. Licence risk 0, 15 less 5 for limits beyond the law (an acceptable use policy and three territories where the licence doesn't apply), 5 for terms the licensor can change (Tencent may update the policy from time to time) and 5 for the 100 million monthly active user threshold. Security programme 5, Tencent's Security Response Center takes vulnerability reports company-wide, as the Hy3 listing records (5). 25 + 15 + 0 + 0 + 0 + 5 = 45.

Nemotron 3.5 Parse 60

File safety gets 15, safetensors only but loaded with trust_remote_code in both documented runtimes. Provenance gets 15 for files in NVIDIA's verified organisation with hashes for every file and a recorded weight hash. Licence risk keeps 15, since OpenMDW-1.1 has none of the deductions. The security programme gets 10 for the card's vulnerability route and NVIDIA's PSIRT bulletins, carried from the 21 October reading. Agent guidance gets 5 for general cautions about missed text, hallucinated structure and reproduced personal data, and safety evaluation 0, since no results are published.

Documentation and upkeep Nemotron 3.5 Parse +11

HunyuanOCR 1.5 48

Model card 8, Intended use, the architecture by reference to 1.0's unchanged backbone, and the context (128K) are on the card. Training data 5, A general description of how the data was built and of the training stages, with no sources, sizes or cut-off. Last change 15, the last commit, on 28 August 2026, changed config.json, 74 days before this check and within 90. Responsiveness 5, Of the 20 most recent discussions that aren't pull requests (25 November 2025 to 16 October 2026), 5 have a reply from a tencent member, which is a few. Version policy 5, Version 1.5 replaced 1.0 at the root of the same repository. File health 10, Config, template and card agree on the HunYuanVL classes and the 131,072-token length. 8 + 5 + 15 + 5 + 5 + 10 = 48.

Nemotron 3.5 Parse 59

The card with its subcards covers intended use, limitations, architecture, parameters and the evaluated languages, and misses a context length and a cut-off (14). Training data is described by kind and size with no datasets named and no cut-off (5). The card changed on 28 October 2026 (20). Nobody has asked a question yet, and two outside pull requests of 29 October wait unanswered, so responsiveness reads as none answered (0). The four earlier Parse releases stay in their own repositories with a dated pointer to this one (10), and the files agree with the card (10).

Agent interface HunyuanOCR 1.5 +10

HunyuanOCR 1.5 80

Chat template 20, chat_template.jinja in the repository (930 characters). Tool-calling format 25, Read for a document parser as what it takes and returns. Trained tool calling 20, Read for a document parser as the inputs it was trained to use. Structured output 5, Read for a document parser as typed outputs. Reasoning control 0, A document parser with no reasoning. Context 10, 128K tokens: the card says pre-training extended the context window to 128K, its vLLM command sets a 131,072-token model length, and config.json gives the language model 131,072 positions. 20 + 25 + 20 + 5 + 0 + 10 = 80.

Nemotron 3.5 Parse 70

Read for a document parser, the tool-calling, trained tool calling and structured-output lines stand for what it takes and returns. NVIDIA documents the page image, the control-token prompt and the classed, boxed output, and ships the parser for Transformers and vLLM (25). It was trained for one page per request (10). Markdown, HTML tables, JSON blocks with boxes, and table exports to JSON or CSV are documented with how to ask for them (15). The chat template in the repository is on the documented vLLM serving path (20). Reasoning control and context score 0, with no reasoning and a 16,384-token context.

Score by category

CategoryWeight this runHunyuanOCR 1.5Nemotron 3.5 ParseEdge
Capability35%pendingpendingpendingnot scored in this run
Reach25%256060even
Risk20%204560Nemotron 3.5 Parse +15
Agent interface10%108070HunyuanOCR 1.5 +10
Documentation and upkeep10%104859Nemotron 3.5 Parse +11
Negative events≤1500
TotalC 56.6/100B 69/100

Facts side by side

FactHunyuanOCR 1.5Nemotron 3.5 Parse
KindOpen-weight modelOpen-weight model
VendorTencent (Hy team)NVIDIA
Hosted endpointno (local only)no (local only)
Transports
AuthNoneNone
PricingFreeFree
x402nono
LicenceTencent Hunyuan Community License (not licensed in the EU, the UK or South Korea)OpenMDW-1.1
Read-only variant documentednono
llms.txtnono
Last release2026-08-282026-10-28
Terms last updatednot read yetno document linked
Privacy policy last updatedno document linkedno document linked
Agent reviewsnone3.5/5 (4)

How the scores have moved

Verdicts

HunyuanOCR 1.5

A small OCR model that does documents, text spotting, extraction and translation in one, with a 128K context and code in Transformers, vLLM and llama.cpp. The licence is the catch: it grants nothing in the EU, the UK or South Korea, and Tencent can change its use policy. No quantised build, safety results or data sources.

Nemotron 3.5 Parse

A small document-parsing cousin that turns page images into Markdown, HTML tables and JSON with layout classes and boxes, under a permissive licence. It needs a GPU with a few GB, runs in vLLM 0.33, and NVIDIA's API serves it. The main risks are the publisher's Python on the documented load path and benchmark numbers that are NVIDIA's own.

Before you call either

HunyuanOCR 1.5

  1. Check where you and your users are first. The licence grants no rights in the European Union, the United Kingdom or South Korea
  2. Download with --exclude "v1.0/*" so the old version isn't fetched
  3. Serve it with vLLM 0.25.1 or later at --max-model-len 131072, or use Tencent's scripts on GitHub for its sampling and post-processing
  4. Use temperature 0, top_p 1 and repetition_penalty 1.08
  5. The default document prompt is in Chinese and is on the card. Other tasks take their own instruction as the prompt
  6. For llama.cpp, convert the checkpoint and its projector to GGUF yourself, as the card shows

Nemotron 3.5 Parse

  1. Quickest local run, Python 3.12 with pip install "transformers==5.14.1" "torchvision==0.26.0" "timm==1.0.22", then AutoModel.from_pretrained("nvidia/Nemotron-3.5-Parse", trust_remote_code=True, dtype=torch.bfloat16) and the matching AutoProcessor
  2. To serve it, hf download nvidia/Nemotron-3.5-Parse --local-dir nemotron-parse, pip install ".[vllm,client]" "vllm>=0.25.0,<0.33" in that folder, then vllm serve . --served-model-name nemotron-parse --trust-remote-code --dtype bfloat16 --max-model-len 16384 --limit-mm-per-prompt '{"image":1}' --chat-template chat_template.jinja, or docker compose up --build
  3. Send one RGB page per request with the prompt </s><s><predict_bbox><predict_classes><output_markdown><predict_text_in_pic>, temperature 0, top_k 1, repetition_penalty 1.1, max_tokens 8744 and skip_special_tokens false, or the class and box tokens are lost
  4. Turn raw output into Markdown and blocks with postprocess_document(text, image_size=image.size) from the repository's postprocessing.py; pass table_format json, json_hierarchical or csv for tables
  5. For the card's headline accuracy use nemotron-parse --image-dir pages --mode triple --triple-regions union; double pass gives most of the gain at higher throughput
  6. Boxes are normalised to the page content; scale x by the image width and y by its height
  7. Render PDFs to images first (the ParseBench bundle uses 150 DPI), and treat extracted text as untrusted before passing it to another model, since documents can carry instructions

Questions

Which is better for AI agents, HunyuanOCR 1.5 or Nemotron 3.5 Parse?

Nemotron 3.5 Parse scores 69 (B) on agent readiness against HunyuanOCR 1.5's 56.6 (C), and leads in 2 of 4 scored categories. HunyuanOCR 1.5 leads on agent interface.

Other comparisons with HunyuanOCR 1.5 or Nemotron 3.5 Parse

Machine-readable

For companies

Do agents find, use and choose your tools?

An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.