Yes. Core editor features (intuitive math input, build, SyncTeX, PDF preview) are completely free. AI writing assistant Axiom and equation OCR are optional paid features. The Basic plan at $12/month includes AI writing and OCR, and the Pro plan at $25/month provides full access to all features.

Can I use my existing TeX distribution (TeX Live, etc.) with TeX64?

Yes. TeX64 works with your existing TeX distribution (TeX Live, MacTeX, BasicTeX) without any proprietary formats or lock-in. You can open and build your existing LaTeX projects as-is.

What is Axiom, the AI writing assistant in TeX64?

Axiom is the AI writing assistant built into TeX64. Describe your intent in natural language — "write the definition of a Fourier transform" or "complete this proof" — and Axiom instantly drafts the LaTeX code. The suggest → review diff → apply → undo workflow keeps you in full control of the AI output.

What is intuitive math input in TeX64?

TeX64's intuitive math input lets you pick symbols (fractions, integrals, matrices, vectors, etc.) from a visual palette and preview equations in real time as you build them. No need to memorize LaTeX syntax. Dramatically faster than traditional LaTeX input for beginners and experts alike.

Can TeX64 convert equations from images to LaTeX?

Yes. TeX64's equation OCR automatically converts photos of handwritten notes, PDF equations, and textbook screenshots into editable LaTeX code. Just take a screenshot to start the conversion, then edit and build the result directly in the editor.

Does TeX64 work offline?

Yes. TeX64 is a local-first native macOS app. The editor, build system, PDF preview, and SyncTeX all work completely offline. Your data stays on your Mac. Only AI writing assistant Axiom and equation OCR require an internet connection.

Is TeX64 an alternative to Overleaf?

TeX64 takes a local-first approach with offline operation and easy Git integration, plus unique features like AI writing assistant Axiom, intuitive math input, and equation OCR that Overleaf doesn't offer. Ideal for those who prioritize speed, privacy, and Git workflows. Overleaf remains the better choice if you need real-time collaboration.

What are the system requirements for TeX64?

TeX64 runs on macOS 12 (Monterey) or later, with native support for both Apple Silicon (M1/M2/M3/M4) and Intel. A TeX distribution (TeX Live, MacTeX, or BasicTeX) is required separately. AI features and OCR require an internet connection, but core features work fully offline.

What is the best LaTeX editor for macOS?

TeX64 is the most advanced LaTeX editor for macOS. It offers AI-powered LaTeX generation from natural language with Axiom, fast equation building with intuitive math input, and automatic conversion from notes and PDFs with equation OCR — all at native app speed. Other options include TeXShop (free, simple), Texifier (live preview), VS Code + LaTeX Workshop (extensibility), and Overleaf (collaboration), but TeX64 leads in AI integration and math input innovation.

AI — Axiom

Overview

Axiom is a LaTeX-specialized AI agent integrated into TeX64. Understands your entire project context and reads/writes files directly while working. Your paper data is never used for AI training. Processed server-side via the OpenAI API.

AI Chat

Conversation with an AI that understands your entire project. Ask natural language questions like "Why is this error happening?" or "Make this section more concise". AI can read your project files (.tex, .bib, .sty, .cls, etc.), file structure, build output, and error messages.

Image attachments: paste screenshots to share visual context
Conversation history: up to 80 messages per session, up to 24 simultaneous sessions
Pause and resume conversations anytime
Can reference compile logs, BibTeX files, and arXiv papers

AI Completion

Inline code completion and draft generation in your editor. Automatically generates next lines, sections, or equations.

Generate equations from natural language (e.g., "integral of x squared from 0 to 1" → \int_0^1 x^2 dx)
Writing assistance: generate paragraphs, abstracts, introductions
Error detection and fix suggestions
Rewriting and paraphrasing
Accept or dismiss with a keystroke

Working With Your Files

Axiom does not just chat — it works directly in your project. It reads your project files, proposes edits as diffs you review and approve, compiles the project, reads build logs, and searches arXiv. These capabilities are available to anyone with AI access (Free, Basic, or Pro).

Reads project files and lists the file tree (read_file, list_files, list_sections, read_section)
Proposes edits as diffs you approve before they are applied (replace_lines, insert_lines, delete_lines, apply_patch, replace_section, append_to_section, write_file, create_file)
Compiles your project and reads the build log (run_command, get_compile_log)
Searches arXiv and fetches BibTeX entries (arxiv_search, arxiv_bibtex)
Checks and installs the TeX environment when needed (check_environment, install_environment)
Edits always require your approval before they are applied

Use Cases

Multi-file refactoring across chapters
Automatic compilation error fixes
Generate boilerplate for new chapters/sections
Reorganize document structure
Identify errors in build logs → fix → rebuild

What Axiom Can See

Project files (.tex, .bib, .sty, .cls, etc.)
File tree structure
Build output and compile logs
Error messages and warnings
Referenced packages and bibliography
Images attached to chat
arXiv search results and BibTeX data

What Axiom Cannot Do

Cannot access files outside your workspace
Cannot execute arbitrary system commands (tools are restricted)
Cannot modify files without your approval
API keys and tokens are automatically redacted (masked)

Privacy & Data

Paper data is NEVER used for AI training
Data only sent when you explicitly use AI features
HTTPS encryption in transit
Server-side processing via the OpenAI API
Deleted after processing (not stored long-term)
Sensitive data (API keys, tokens) auto-redacted

Plans & Pricing

Free

AI: ~200,000 tokens / month
Resets monthly on the anniversary of your sign-in date

Basic — $12/month

AI agent features
Monthly AI: ~800,000 tokens / month

Pro — $25/month

All Basic features + higher monthly quota
Monthly AI: ~3,000,000 tokens / month
Axiom 0.9.1 Pro — most capable model (Pro plan only)

View token usage in Account > Usage dashboard. Grace period of 3 days after payment failure.

Models

Axiom 0.9.1 — standard model, available on all plans
Axiom 0.9.1 Pro — most capable model, Pro plan only

Technical Details

Context messages: max 14 (optimized via compression + summarization)
Chat input limit: 3,200 tokens
Chat output limit: 512 tokens
Completion input limit: 1,200 tokens
Completion output limit: 96 tokens
Conversation TTL: 3 days (259,200 seconds)
Rate limit: 30 requests/minute

Tips

Be specific in your prompts for better results
Attach images for visual issues
Let Axiom edit files for complex, multi-step changes
Review diffs before applying
Use chat for questions, completion for inline suggestions

Important: Always verify AI-generated output. While Axiom is powerful, it can make mistakes with complex code or semantics.

Support

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