Best SDKs for AI agents that handle Office and PDF files (search query)

Requested by a visitor · October 25, 2026

We asked 10 models: best sdk for ai agents reading writing office and pdf files Each named its own top 10.

Asked 4 ways: List request · Buyer asking for advice · Search query · Worth paying for?. Share of voice pools every wording.

Agreement between models: 15%
Same model, run twice: 43%
Different picks: 49

When agreement between models is well below a model's agreement with itself, the split reflects real differences in taste rather than randomness.

The consensus

Each cell is the position that model gave the pick; blank means it left the pick off. Click a row for each model's reasoning.

#	Pick	Listed by	Claude Haiku 5.5	GPT-6 Luna	Gemini 4 Argon	Qwen 3.8 Flash	DeepSeek V4 Pro	GLM-5.3	Kimi K3	MiniMax M3	Mistral Large 4	Nemotron 3 Ultra
1	Unstructured	8/10	9	9	3	8	1	2	1		2
DeepSeek V4 Pro (#1) Purpose-built for document ingestion, excels at parsing PDFs, Office files, and complex layouts for AI pipelines. Kimi K3 (#1) Open-source standard for chunking Office/PDF files into LLM-ready formats. GLM-5.3 (#2) Broadest format coverage and mature pipelines for RAG and agent ingestion. Mistral Large 4 (#2) Best-in-class parsing for PDFs, Office docs, and messy files into LLM-ready data. Gemini 4 Argon (#3) Purpose-built for AI agents to parse and extract clean data from complex Office and PDFs. Claude Haiku 5.5 (#9) Purpose-built document parsing for LLM agents across PDFs and Office formats GPT-6 Luna (#9) Strong document ingestion and parsing for extracting structured content for AI.
2	Aspose.Total	5/10		1	4		5			5		1
GPT-6 Luna (#1) Broad SDK coverage for reading, writing, converting, and manipulating Office and PDF formats. Nemotron 3 Ultra (#1) Mature, feature-rich APIs for Word, Excel, PPT, PDF across platforms. Gemini 4 Argon (#4) Unmatched format coverage for programmatically creating, editing, and converting Office and PDF documents. MiniMax M3 (#5) Commercial cross-format SDK covering Office, PDF in many languages
3	LlamaParse	6/10	10		10	5		1	7		1
GLM-5.3 (#1) Best-in-class parsing of PDFs, tables, and layouts into agent-ready markdown. Mistral Large 4 (#1) LlamaIndex's purpose-built document parser, excellent for structured extraction and RAG. Kimi K3 (#7) Best-in-class PDF-to-Markdown conversion for agentic RAG pipelines. Claude Haiku 5.5 (#10) Strong LLM-oriented PDF parsing that handles complex layouts and tables Gemini 4 Argon (#10) Leading AI-native parser for converting complex PDFs and Office files into LLM-ready markdown.
4	Apache POI	5/10	1			9		8		2		7
Claude Haiku 5.5 (#1) Mature Java library for reading and writing Word, Excel, and PowerPoint files MiniMax M3 (#2) Mature Java SDK for Word, Excel, PowerPoint read/write Nemotron 3 Ultra (#7) Battle-tested Java library for Microsoft Office formats.
5	python-docx	4/10	3						9	3		3
Claude Haiku 5.5 (#3) Simple, reliable Python library for creating and editing Word documents MiniMax M3 (#3) Simple, reliable Python library for Word document manipulation Nemotron 3 Ultra (#3) Clean API for creating and modifying Word .docx files in Python. Kimi K3 (#9) Lightweight, reliable programmatic writing of Word documents for agent outputs.
6	Apryse SDK	3/10		3	1		4
Gemini 4 Argon (#1) Comprehensive read, write, and conversion capabilities across PDF and Office formats without external dependencies. GPT-6 Luna (#3) Strong document SDK for PDF and Office workflows, with mature rendering and editing capabilities.
7	Docling	4/10			6	4		6			6
Gemini 4 Argon (#6) Powerful open-source toolkit by IBM for parsing PDFs and Office documents into structured formats. GLM-5.3 (#6) Open-source, accurate document-to-markdown conversion purpose-built for LLM apps. Mistral Large 4 (#6) IBM's open-source toolkit, great local/offline conversion of PDFs and Office files.
8	LlamaIndex	3/10			5		2		5
DeepSeek V4 Pro (#2) Best overall data framework with deep Office/PDF connectors and strong agent abstraction layer.
9	pdfplumber	3/10	4							6		2
Nemotron 3 Ultra (#2) Best Python library for extracting tables and text from PDFs. Claude Haiku 5.5 (#4) Accurate table and text extraction from PDFs, ideal for agent pipelines MiniMax M3 (#6) Excellent Python PDF text and table extraction for agents
10	PyMuPDF	5/10	2					5		8	9	10
Claude Haiku 5.5 (#2) Fast PDF text extraction, rendering, and editing with a clean Python API GLM-5.3 (#5) The go-to Python library for programmatic PDF reading and writing. MiniMax M3 (#8) Fast, rich PDF parsing with images, text, and metadata support Mistral Large 4 (#9) Fast, free, and precise PDF text and layout extraction, a developer favorite.
11	LangChain	3/10			8		3		2
DeepSeek V4 Pro (#3) Most mature agent framework with extensive document loaders for PDF, Word, Excel, and PowerPoint.
12	openpyxl	3/10	6							4		4
MiniMax M3 (#4) Best Python SDK for reading and writing modern Excel files Nemotron 3 Ultra (#4) Standard Python library for reading and writing Excel .xlsx files. Claude Haiku 5.5 (#6) Go-to Python library for reading and writing Excel spreadsheets
13	Azure AI Document Intelligence	2/10						3			3
GLM-5.3 (#3) Production-grade OCR and layout analysis backed by Azure AI. Mistral Large 4 (#3) Microsoft's enterprise-grade OCR and form parsing with strong table extraction.
14	Microsoft Graph SDK	2/10						7		1
MiniMax M3 (#1) Native Office 365, OneDrive, SharePoint integration with strong auth
15	Microsoft Graph API	2/10		2					6
GPT-6 Luna (#2) Best for agents working with Microsoft 365 files stored in OneDrive or SharePoint. Kimi K3 (#6) Native SDK access to Word, Excel, PowerPoint files in enterprise environments.

34 lower-scoring picks are not shown; every ballot below lists them in full.

Most divisive

Picks most models listed, at very different positions

LlamaParse#1 for GLM-5.3 #10 for Gemini 4 Argon
Unstructured#1 for DeepSeek V4 Pro #9 for GPT-6 Luna
Apache POI#1 for Claude Haiku 5.5 #9 for Qwen 3.8 Flash

Hot takes

Picks that appear on only one ballot

Microsoft Office Interop at #1, only Qwen 3.8 Flash
PSPDFKit at #2, only Gemini 4 Argon
Microsoft Office SDK at #2, only Qwen 3.8 Flash
Mistral Document AI at #3, only Kimi K3
Syncfusion Document Processing at #4, only GPT-6 Luna
LandingAI Agentic Document Extraction at #4, only Kimi K3
Google Document AI at #4, only Mistral Large 4
Aspose at #5, only Claude Haiku 5.5
GroupDocs.Total at #5, only GPT-6 Luna
Amazon Textract at #5, only Mistral Large 4
Syncfusion Essential Studio at #5, only Nemotron 3 Ultra
PDFsharp at #6, only Qwen 3.8 Flash

Every ballot

Hover a pick to find it on the other ballots. Marked picks appear on no other ballot.

Claude Haiku 5.5

Apache POI
PyMuPDF
python-docx
pdfplumber
Aspose
openpyxl
iText
Docmosis
Unstructured
LlamaParse

21% with consensus · 42% self-consistent

GPT-6 Luna

Aspose.Total
Microsoft Graph API
Apryse SDK
Syncfusion Document Processing
GroupDocs.Total
Adobe PDF Services
Google Drive API
LibreOffice
Unstructured
ONLYOFFICE Docs API

27% with consensus · 51% self-consistent

Gemini 4 Argon

Apryse SDK
PSPDFKit
Unstructured
Aspose.Total
LlamaIndex
Docling
Adobe PDF Services
LangChain
Foxit PDF SDK
LlamaParse

35% with consensus · 27% self-consistent

Qwen 3.8 Flash

Microsoft Office Interop
Microsoft Office SDK
Aspose.Words
Docling
LlamaParse
PDFsharp
iText
Unstructured
Apache POI
Docxtemplater

14% with consensus · 0% self-consistent

DeepSeek V4 Pro

Unstructured
LlamaIndex
LangChain
Apryse SDK
Aspose.Total
CrewAI
PDF.co
AutoGen
Apache Tika
Semantic Kernel

50% with consensus · 28% self-consistent

GLM-5.3

LlamaParse
Unstructured
Azure AI Document Intelligence
MarkItDown
PyMuPDF
Docling
Microsoft Graph SDK
Apache POI
Marker
Apache Tika

41% with consensus · 61% self-consistent

Kimi K3

Unstructured
LangChain
Mistral Document AI
LandingAI Agentic Document Extraction
LlamaIndex
Microsoft Graph API
LlamaParse
PyPDF
python-docx
Aspose.Words

43% with consensus · 17% self-consistent

MiniMax M3

Microsoft Graph SDK
Apache POI
python-docx
openpyxl
Aspose.Total
pdfplumber
PDFBox
PyMuPDF
Adobe PDF Services
iText

26% with consensus · 83% self-consistent

Mistral Large 4

LlamaParse
Unstructured
Azure AI Document Intelligence
Google Document AI
Amazon Textract
Docling
MarkItDown
Marker
PyMuPDF
Surya

39% with consensus · 78% self-consistent

Nemotron 3 Ultra

Aspose.Total
pdfplumber
python-docx
openpyxl
Syncfusion Essential Studio
IronPDF
Apache POI
IronXL
IronWord
PyMuPDF

33% with consensus · 48% self-consistent

Who agrees with whom

Overlap between two models' lists, weighted toward the top · 100 means identical · Color runs from 1 (lightest) to 82 (darkest)

	Claude Haiku 5.5	GPT-6 Luna	Gemini 4 Argon	Qwen 3.8 Flash	DeepSeek V4 Pro	GLM-5.3	Kimi K3	MiniMax M3	Mistral Large 4	Nemotron 3 Ultra
Claude Haiku 5.5		1	2	7	1	11	3	47	3	33
GPT-6 Luna	1		28	1	18	1	6	8	1	36
Gemini 4 Argon	2	28		8	40	19	24	8	19	10
Qwen 3.8 Flash	7	1	8		2	15	6	2	14	1
DeepSeek V4 Pro	1	18	40	2		21	57	7	21	7
GLM-5.3	11	1	19	15	21		24	8	82	3
Kimi K3	3	6	24	6	57	24		1	24	1
MiniMax M3	47	8	8	2	7	8	1		1	40
Mistral Large 4	3	1	19	14	21	82	24	1		1
Nemotron 3 Ultra	33	36	10	1	7	3	1	40	1