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MemOS vs llama_index

MemOS and llama_index share 41 technologies: psycopg2-binary, pymysql, Redis, SQLite, Neo4j, pymilvus, OpenAI, Alibaba Cloud, anyio, starlette, MCP, soupsieve, Rich, SQLAlchemy, cryptography, pyjwt, nltk, tavily-python, tokenizers, scikit-learn, torch, transformers, LangChain, Ollama, chonkie, sentence-transformers, beautifulsoup4, defusedxml, jinja2, lxml, markdownify, markupsafe, xlrd, markitdown, pillow, annotated-types, jsonschema, jsonschema-specifications, referencing, Pydantic, and prometheus-client. MemOS is written in TypeScript and llama_index in Python.

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What they share and what sets them apart

MemTensor

MemOS

Self-evolving memory OS for LLM & AI Agents: ultra-persistent memory, hybrid-retrieval, and cross-task skill reuse, with 35.24% token savings and DeepSeek Harness support.

TypeScript12.4kRead on November 11, 2026, at commit 3a16e5f What is MemOS built with?

Only in MemOS

In common

run-llama

llama_index

LlamaIndex is the document processing platform for AI

Python52.9kRead on November 10, 2026, at commit fe107aa What is llama_index built with?

Only in llama_index

Side by side

MemOSllama_index

SizeLines written by people and agents, without generated ones; code files, without tests.

MemOS447,484 lines written898 code files

llama_index473,236 lines written2,055 code files

Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.

MemOS10.8% of its commits signed by AIWith Cursor, Claude Code, and GitHub Copilot

llama_index0.2% of its commits signed by AIWith Claude Code, Cursor, and GitHub Copilot

ActivityFrom GitHub and its history, on the day SeeRepo read it.

MemOSLast push November 11, 20261,631 commits12,352 stars

llama_indexLast push November 8, 20267,964 commits52,863 stars

TestsThe files that test the code, and the share of code files a test imports.

MemOS480 test files46.1% of its code files have a test that imports them

llama_index1,607 test files46.5% of its code files have a test that imports them

Frequently asked questions

Which is bigger, MemOS or llama_index?

llama_index, with 473,236 lines written; MemOS has 447,484.

The proof: run-llama/llama_index's code at commit fe107aa

Which has more GitHub stars, MemOS or llama_index?

llama_index, with 52,863 stars; MemOS has 12,352.

The proof: run-llama/llama_index on GitHub

Which has more tests, MemOS or llama_index?

llama_index, with 1,607 test files; MemOS has 480.

The proof: run-llama/llama_index's code at commit fe107aa

Which was updated more recently, MemOS or llama_index?

MemOS: its last push was on November 11, 2026, and llama_index's on November 8, 2026.

The proof: MemTensor/MemOS's commits on GitHub

Which has more commits signed by AI, MemOS or llama_index?

MemOS: an AI signed 10.8% of its commits, with Cursor, Claude Code, and GitHub Copilot; in llama_index, 0.2%.

The proof: the commits each tool signed in MemTensor/MemOS

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