Best SDKs for AI agents that handle Office and PDF files

Requested by a visitor · October 25, 2026

We asked 10 models: The best SDKs for AI agents that read and write 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: 16%
Same model, run twice: 35%
Different picks: 50

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	Microsoft Graph	6/10		3		1		2	8	1	3
Qwen 3.8 Flash (#1) Definitive API for Office files, enormous agent adoption MiniMax M3 (#1) Native, comprehensive API for Word, Excel, PowerPoint, and OneDrive files. GLM-5.3 (#2) Native cloud read/write of Word, Excel, PowerPoint where files live. GPT-6 Luna (#3) Practical cloud APIs for reading and writing Word, Excel, PowerPoint, and PDF-backed files. Mistral Large 4 (#3) Official API for reading/writing all Microsoft 365 files at scale with granular permissions. Kimi K3 (#8) Direct read/write of Office files in OneDrive/SharePoint/Office apps.
2	Apryse	6/10	5	2	1		2	4		9
Gemini 4 Argon (#1) Comprehensive enterprise SDK for reading, writing, and programmatically editing PDF and Office formats natively. GPT-6 Luna (#2) Strong document-processing toolkit spanning PDF and Office conversion, editing, rendering, and extraction. DeepSeek V4 Pro (#2) Formerly PDFTron; full read/write/edit control over PDF and Office formats. GLM-5.3 (#4) Best all-in-one PDF plus Office rendering, conversion, and editing for agents.
3	Apache POI	5/10	4			3		10		2	1
Mistral Large 4 (#1) Mature, free, battle-tested Java library for full programmatic control of Office formats. MiniMax M3 (#2) Mature Java library for reading/writing Word and Excel documents reliably. Claude Haiku 5.5 (#4) Widely used open-source Java library for Office formats, with strong community support.
4	Aspose.Total	6/10		1	9		5			7	9	2
GPT-6 Luna (#1) Broad, mature APIs for creating, editing, converting, and extracting content across Office and PDF formats. Nemotron 3 Ultra (#2) Mature .NET/Java/Cloud APIs covering Word, Excel, PowerPoint, PDF with high fidelity Gemini 4 Argon (#9) Unmatched breadth for programmatic creation, manipulation, and conversion across all Office and PDF formats.
5	Aspose.Words	4/10	1			6		1				9
Claude Haiku 5.5 (#1) Mature, comprehensive library for reading and writing Word, plus PDF and Excel support. GLM-5.3 (#1) Deepest programmatic DOCX/PDF manipulation without Office dependencies.
6	Unstructured	3/10			3		1		2
DeepSeek V4 Pro (#1) Purpose-built for agentic document parsing with chunking, OCR, and clean markdown output. Kimi K3 (#2) Purpose-built ingestion SDK; best Office/PDF parsing with element metadata. Gemini 4 Argon (#3) Industry standard for ingesting, chunking, and preprocessing Office and PDF files for agent workflows.
7	python-docx	4/10							1	8	8	1
Kimi K3 (#1) Simple, dependable Word document creation and editing for agents. Nemotron 3 Ultra (#1) Pythonic library for creating/updating Word .docx files programmatically MiniMax M3 (#8) Clean Python API for generating and editing Word documents programmatically. Mistral Large 4 (#8) Simple, widely adopted Python library for Word documents without Office dependencies.
8	PyMuPDF	7/10	10		7	10	6	6	9			7
DeepSeek V4 Pro (#6) Lightweight, fast Python library for reading and writing PDFs with strong agent compatibility. Gemini 4 Argon (#7) Blazingly fast Python library with dedicated LLM extensions for extracting structured PDF and document data. Nemotron 3 Ultra (#7) Fast Python binding to MuPDF for PDF text extraction, rendering, editing Claude Haiku 5.5 (#10) Fast Python library for PDF reading, extraction, and editing, popular in AI pipelines.
9	OpenPyXL	4/10							5	5	10	3
Kimi K3 (#5) Most practical Excel read/write SDK for agent automation. MiniMax M3 (#5) Go-to Python library for creating and modifying Excel xlsx files. Mistral Large 4 (#10) De facto Python standard for Excel read/write with solid performance and features.
10	LlamaParse	2/10			2		3
Gemini 4 Argon (#2) Purpose-built for AI agents to parse complex PDFs and Office documents into LLM-ready markdown. DeepSeek V4 Pro (#3) LlamaIndex-native parser that converts complex PDFs into agent-friendly structured text.
11	Adobe PDF Services API	4/10	6		5			9			7
Gemini 4 Argon (#5) Best-in-class cloud SDK for high-fidelity PDF generation, Office conversion, and AI-powered structure extraction. Claude Haiku 5.5 (#6) Adobe's API for extracting, generating, and transforming PDFs at enterprise scale. GLM-5.3 (#9) Authoritative PDF creation, extraction, and manipulation REST API.
12	Aspose.Cells	2/10				4		3
GLM-5.3 (#3) Powerful headless spreadsheet creation, formulas, and conversion. Qwen 3.8 Flash (#4) Deep Excel read/write trusted across enterprise agents
13	iText	3/10	7			9				3
MiniMax M3 (#3) Powerful Java/.NET SDK for advanced PDF generation and editing workflows. Claude Haiku 5.5 (#7) Powerful PDF generation and manipulation SDK with strong commercial support. Qwen 3.8 Flash (#9) Mature PDF library with strong programmatic control
14	Syncfusion	2/10	2	7
Claude Haiku 5.5 (#2) Broad suite covering Word, Excel, PowerPoint, and PDF across multiple languages.
15	Syncfusion Essential Studio	2/10		6								4
Nemotron 3 Ultra (#4) Comprehensive .NET/Blazor/Flutter components for Office/PDF creation, editing, conversion GPT-6 Luna (#6) Extensive .NET and JavaScript document libraries for manipulating Office files and PDFs.

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

Most divisive

Picks most models listed, at very different positions

Apache POI#1 for Mistral Large 4 #10 for GLM-5.3
Apryse#1 for Gemini 4 Argon #9 for MiniMax M3
Aspose.Total#1 for GPT-6 Luna #9 for Mistral Large 4

Hot takes

Picks that appear on only one ballot

Docxtemplater at #2, only Qwen 3.8 Flash
Microsoft Agent Framework (Copilot Studio) at #2, only Mistral Large 4
LlamaIndex at #3, only Kimi K3
GroupDocs at #4, only GPT-6 Luna
Foxit PDF SDK at #4, only Gemini 4 Argon
Adobe PDF Extract API at #4, only DeepSeek V4 Pro
python-pptx at #4, only Kimi K3
Open XML SDK at #4, only MiniMax M3
Adobe PDF Library at #5, only GPT-6 Luna
Spire.Doc at #5, only Qwen 3.8 Flash
ClosedXML at #5, only Mistral Large 4
pdfplumber at #5, only Nemotron 3 Ultra

Every ballot

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

Claude Haiku 5.5

Aspose.Words
Syncfusion
PDFBox
Apache POI
Apryse
Adobe PDF Services API
iText
CloudConvert
Docmosis
PyMuPDF

24% with consensus · 47% self-consistent

GPT-6 Luna

Aspose.Total
Apryse
Microsoft Graph
GroupDocs
Adobe PDF Library
Syncfusion Essential Studio
Syncfusion
Nutrient
Spire.Office
ONLYOFFICE Docs

44% with consensus · 68% self-consistent

Gemini 4 Argon

Apryse
LlamaParse
Unstructured
Foxit PDF SDK
Adobe PDF Services API
PSPDFKit
PyMuPDF
Docling
Aspose.Total
Nutrient

30% with consensus · 35% self-consistent

Qwen 3.8 Flash

Microsoft Graph
Docxtemplater
Apache POI
Aspose.Cells
Spire.Doc
Aspose.Words
LibreOffice
PSPDFKit
iText
PyMuPDF

56% with consensus · 45% self-consistent

DeepSeek V4 Pro

Unstructured
Apryse
LlamaParse
Adobe PDF Extract API
Aspose.Total
PyMuPDF
Aspose
PDF.co
Nanonets
Azure AI Document Intelligence

36% with consensus · 42% self-consistent

GLM-5.3

Aspose.Words
Microsoft Graph
Aspose.Cells
Apryse
Nutrient
PyMuPDF
SheetJS
Syncfusion File Formats
Adobe PDF Services API
Apache POI

40% with consensus · 39% self-consistent

Kimi K3

python-docx
Unstructured
LlamaIndex
python-pptx
OpenPyXL
pypdf
LangChain
Microsoft Graph
PyMuPDF
Google Workspace API

13% with consensus · 4% self-consistent

MiniMax M3

Microsoft Graph
Apache POI
iText
Open XML SDK
OpenPyXL
docx4j
Aspose.Total
python-docx
Apryse
PDFBox

58% with consensus · 62% self-consistent

Mistral Large 4

Apache POI
Microsoft Agent Framework (Copilot Studio)
Microsoft Graph
Azure AI Document Intelligence
ClosedXML
Google Workspace AI (Gemini for Workspace)
Adobe PDF Services API
python-docx
Aspose.Total
OpenPyXL

32% with consensus · 2% self-consistent

Nemotron 3 Ultra

python-docx
Aspose.Total
OpenPyXL
Syncfusion Essential Studio
pdfplumber
pdfRest API
PyMuPDF
IronPDF
Aspose.Words
DocuSign eSignature API

18% with consensus · 2% self-consistent

Who agrees with whom

Overlap between two models' lists, weighted toward the top · 100 means identical · Color runs from 1 (lightest) to 53 (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		10	13	17	8	46	1	15	13	2
GPT-6 Luna	10		23	14	28	26	2	19	15	26
Gemini 4 Argon	13	23		3	53	15	15	3	5	5
Qwen 3.8 Flash	17	14	3		1	37	3	51	28	2
DeepSeek V4 Pro	8	28	53	1		15	22	5	2	10
GLM-5.3	46	26	15	37	15		4	23	16	5
Kimi K3	1	2	15	3	22	4		11	5	44
MiniMax M3	15	19	3	51	5	23	11		39	13
Mistral Large 4	13	15	5	28	2	16	5	39		4
Nemotron 3 Ultra	2	26	5	2	10	5	44	13	4