Best Python libraries for PowerPoint files (buyer asking for advice)

Requested by a visitor · October 25, 2026

We asked 10 models: I'm a Python developer and need a library to create and edit PowerPoint files from my code. Which would you recommend? 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: 68%
Same model, run twice: 73%
Different picks: 52

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

This question was also asked with web search on. See which products change when the models look things up first.

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	python-pptx	10/10	1	1	1	1	1	1	1	1	1	1
Claude Haiku 5.5 (#1) The standard Python library for creating and editing .pptx files; mature and well documented. GPT-6 Luna (#1) Best fit: mature Python library for creating and editing .pptx files programmatically. Gemini 4 Argon (#1) The standard, free open-source library for creating and modifying PowerPoint files without dependencies. Qwen 3.8 Flash (#1) De facto standard, pure Python, mature API for creating and editing decks. DeepSeek V4 Pro (#1) The de facto standard, mature, well-documented, and actively maintained. GLM-5.3 (#1) The de facto standard: full create/edit control of PPTX, actively maintained. Kimi K3 (#1) The standard open-source Python library for creating and editing PowerPoint files natively. MiniMax M3 (#1) Most popular, well-maintained library for creating/editing PPTX files. Mistral Large 4 (#1) The standard choice: free, open-source, designed specifically for creating/editing .pptx files programmatically. Nemotron 3 Ultra (#1) Standard, mature, pure-Python, full feature coverage
2	Aspose.Slides	10/10	2	2	2	3	2	2	2	2	2	2
Claude Haiku 5.5 (#2) Commercial library with broad format support and strong rendering features, though it is paid. GPT-6 Luna (#2) Powerful commercial API with broad PowerPoint editing, rendering, and conversion support. Gemini 4 Argon (#2) Enterprise-grade commercial library offering comprehensive editing, rendering, and conversion without needing Office installed. DeepSeek V4 Pro (#2) Powerful enterprise-grade features, high-fidelity rendering, but requires a license. GLM-5.3 (#2) Commercial, feature-complete library with conversions and rendering. Kimi K3 (#2) Powerful commercial library with comprehensive PowerPoint manipulation and conversion features. MiniMax M3 (#2) Commercial feature-rich library with extensive PowerPoint format support. Mistral Large 4 (#2) Most powerful commercial option with extensive format support and advanced features beyond basic editing. Nemotron 3 Ultra (#2) Commercial, high-fidelity rendering, enterprise support Qwen 3.8 Flash (#3) Powerful conversion and rendering via .NET or Python via .NET.
3	Spire.Presentation	10/10	3	3	3	2	3	3	5	3	3	3
Qwen 3.8 Flash (#2) Commercial Free Spire supports rich editing beyond python-pptx's limits. Claude Haiku 5.5 (#3) Commercial Python package for PowerPoint manipulation with a free tier with limits. GPT-6 Luna (#3) Commercial Python API for generating and modifying presentations, with conversion features. Gemini 4 Argon (#3) Feature-rich commercial library with a free tier for full PowerPoint manipulation and conversion. DeepSeek V4 Pro (#3) Rich feature set, supports charts and images well, free tier available. GLM-5.3 (#3) Commercial API for creating, editing, and converting presentations. MiniMax M3 (#3) Commercial library offering strong conversion and editing capabilities. Mistral Large 4 (#3) Solid feature set, good documentation, and reliable rendering for complex presentations. Nemotron 3 Ultra (#3) Commercial, .NET-based, good format fidelity
4	PptxGenJS	4/10		4					3	4	7
Kimi K3 (#3) JavaScript-based but usable via Python bridges; excellent for generating slides programmatically. GPT-6 Luna (#4) Strong presentation-generation library, usable from Python through a Node.js integration. MiniMax M3 (#4) JavaScript library but usable from Python via subprocess for simple slides.
5	PyWin32	3/10			4			5			8
Gemini 4 Argon (#4) Provides complete control over PowerPoint via Windows COM automation when Office is installed. Mistral Large 4 (#8) Direct access to PowerPoint's full object model on Windows for maximum control.
6	Apache POI	4/10	8	5			6	10
GPT-6 Luna (#5) Comprehensive Java PowerPoint API, accessible from Python through JVM interop. Claude Haiku 5.5 (#8) Java library with strong Office support, but usable from Python only via a bridge.
7	PyUNO	4/10			6		7	6			10
Gemini 4 Argon (#6) Enables full creation and editing of presentations by scripting LibreOffice Impress headlessly. GLM-5.3 (#6) Powerful Python automation via headless LibreOffice, steeper learning curve. DeepSeek V4 Pro (#7) Full programmatic control via LibreOffice, free but complex setup. Mistral Large 4 (#10) Headless manipulation alternative when you need server-side Linux compatibility.
8	Pandoc	2/10						4				5
GLM-5.3 (#4) Best for generating slideshows from Markdown; limited fine-grained editing. Nemotron 3 Ultra (#5) Universal converter, markdown to PPTX via templates
9	python-pptx-interface	2/10	5						4
Kimi K3 (#4) Simplified wrapper around python-pptx for easier slide and shape creation. Claude Haiku 5.5 (#5) Command-line and interface layer built on python-pptx for simpler scripted slide editing.
10	Unoconv	3/10	9					8				4
Nemotron 3 Ultra (#4) LibreOffice CLI, converts/edits via headless office GLM-5.3 (#8) Leverages LibreOffice to convert documents including PPTX output.
11	ReportLab	2/10					5				5
DeepSeek V4 Pro (#5) Generates PDFs but can embed slides; great for data-heavy automated reports. Mistral Large 4 (#5) Indirect option when you need to generate presentations from PDF-style layouts.
12	LibreOffice	2/10		7								6
Nemotron 3 Ultra (#6) Headless LibreOffice API for full fidelity editing
13	python-docx	2/10					4		10
DeepSeek V4 Pro (#4) Word-focused but often paired with pptx workflows for document automation.
14	pptx-automizer	1/10				4
No reasons recorded.
15	pptx-template	1/10	4
No reasons recorded.

37 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#5 for GPT-6 Luna #10 for GLM-5.3
PptxGenJS#3 for Kimi K3 #7 for Mistral Large 4
PyUNO#6 for Gemini 4 Argon #10 for Mistral Large 4

Hot takes

Picks that appear on only one ballot

pptx-template at #4, only Claude Haiku 5.5
pptx-automizer at #4, only Qwen 3.8 Flash
Pyro at #4, only Mistral Large 4
comtypes at #5, only Gemini 4 Argon
Slidev at #5, only Qwen 3.8 Flash
Officegen at #5, only MiniMax M3
GroupDocs.Conversion for Python via .NET at #6, only GPT-6 Luna
GroupDocs.Slides at #6, only Kimi K3
pptx-tools at #6, only MiniMax M3
PyAutoGUI at #6, only Mistral Large 4
Pyppeteer at #7, only Claude Haiku 5.5
GroupDocs.Merger for Python at #7, only Gemini 4 Argon

Every ballot

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

Claude Haiku 5.5

python-pptx
Aspose.Slides
Spire.Presentation
pptx-template
python-pptx-interface
Pptx2Html
Pyppeteer
Apache POI
Unoconv
Marp

75% with consensus · 72% self-consistent

GPT-6 Luna

python-pptx
Aspose.Slides
Spire.Presentation
PptxGenJS
Apache POI
GroupDocs.Conversion for Python via .NET
LibreOffice
Open XML SDK
Pandas
unoserver

86% with consensus · 83% self-consistent

Gemini 4 Argon

python-pptx
Aspose.Slides
Spire.Presentation
PyWin32
comtypes
PyUNO
GroupDocs.Merger for Python
IronPython
xwPPTX
GroupDocs.Editor for Python

81% with consensus · 83% self-consistent

Qwen 3.8 Flash

python-pptx
Spire.Presentation
Aspose.Slides
pptx-automizer
Slidev
Marp
PresentationSDK
OfficeParser SDK
Reveal.js
InetSoft Power Presentation

64% with consensus · 60% self-consistent

DeepSeek V4 Pro

python-pptx
Aspose.Slides
Spire.Presentation
python-docx
ReportLab
Apache POI
PyUNO
OpenPyXL
Pillow
FPDF

79% with consensus · 80% self-consistent

GLM-5.3

python-pptx
Aspose.Slides
Spire.Presentation
Pandoc
PyWin32
PyUNO
python-pptx-templater
Unoconv
Redlines
Apache POI

85% with consensus · 72% self-consistent

Kimi K3

python-pptx
Aspose.Slides
PptxGenJS
python-pptx-interface
Spire.Presentation
GroupDocs.Slides
GemBox.Presentation
python-docx2pptx
python-pptx-shapes
python-docx

75% with consensus · 62% self-consistent

MiniMax M3

python-pptx
Aspose.Slides
Spire.Presentation
PptxGenJS
Officegen
pptx-tools
pyppt
python-pptx-templates
python-pptx-ng
Pptx2Html

81% with consensus · 66% self-consistent

Mistral Large 4

python-pptx
Aspose.Slides
Spire.Presentation
Pyro
ReportLab
PyAutoGUI
PptxGenJS
PyWin32
xlwings
PyUNO

77% with consensus · 64% self-consistent

Nemotron 3 Ultra

python-pptx
Aspose.Slides
Spire.Presentation
Unoconv
Pandoc
LibreOffice
OfficeOpenXml
OpenPyXL
python-pptx-template
pptx-mail-merge

74% with consensus · 84% self-consistent

Who agrees with whom

Overlap between two models' lists, weighted toward the top · 100 means identical · Color runs from 57 (lightest) to 83 (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		73	71	65	73	73	71	71	71	72
GPT-6 Luna	73		71	64	76	71	74	81	74	74
Gemini 4 Argon	71	71		64	74	83	64	71	74	71
Qwen 3.8 Flash	65	64	64		64	64	57	64	64	64
DeepSeek V4 Pro	73	76	74	64		75	65	71	78	73
GLM-5.3	73	71	83	64	75		64	71	74	80
Kimi K3	71	74	64	57	65	64		74	67	64
MiniMax M3	71	81	71	64	71	71	74		74	71
Mistral Large 4	71	74	74	64	78	74	67	74		71
Nemotron 3 Ultra	72	74	71	64	73	80	64	71	71