Source: https://seerepo.com/compare/Aider-AI/aider/vs/run-llama/llama_index
Markdown source: https://seerepo.com/compare/Aider-AI/aider/vs/run-llama/llama_index.md
Description: aider and llama_index share 37 technologies: aiosqlite, pyarrow, SQLite, AIOHTTP, anyio, starlette, tornado, soupsieve, matplotlib, Rich, prompt-toolkit, SQLAlchemy, cryptography, Google, nltk, OpenAI, scikit-learn, sentence-transformers, tiktoken, tokenizers, torch, transformers, litellm, llama-index-core, filetype, jinja2, markupsafe, tinytag, pillow, beautifulsoup4, annotated-types, jsonschema-specifications, marshmallow, Pydantic, referencing, jsonschema, and psutil. Both are written in Python.

# aider vs llama_index

aider and llama_index share 37 technologies: aiosqlite, pyarrow, SQLite, AIOHTTP, anyio, starlette, tornado, soupsieve, matplotlib, Rich, prompt-toolkit, SQLAlchemy, cryptography, Google, nltk, OpenAI, scikit-learn, sentence-transformers, tiktoken, tokenizers, torch, transformers, litellm, llama-index-core, filetype, jinja2, markupsafe, tinytag, pillow, beautifulsoup4, annotated-types, jsonschema-specifications, marshmallow, Pydantic, referencing, jsonschema, and psutil. Both are written in Python.

- [Aider-AI/aider](https://seerepo.com/r/Aider-AI/aider): aider is AI pair programming in your terminal
- [run-llama/llama_index](https://seerepo.com/r/run-llama/llama_index): LlamaIndex is the document processing platform for AI

## What they share and what sets them apart

- In common: aiosqlite, pyarrow, SQLite, AIOHTTP, anyio, starlette, tornado, soupsieve, matplotlib, Rich, prompt-toolkit, SQLAlchemy, cryptography, Google, nltk, OpenAI, scikit-learn, sentence-transformers, tiktoken, tokenizers, torch, transformers, litellm, llama-index-core, filetype, jinja2, markupsafe, tinytag, pillow, beautifulsoup4, annotated-types, jsonschema-specifications, marshmallow, Pydantic, referencing, jsonschema, psutil
- Only in aider: gitdb, google-cloud-core, diskcache, PostHog, asgiref, FastAPI, Streamlit, cycler, fonttools, contourpy, llama-index-instrumentation, llama-index-workflows, safetensors, llama-index-embeddings-huggingface, markdown-it-py, mdurl, pypandoc
- Only in llama_index: aiomysql, async-lru, asyncpg, azure-search-documents, azure-storage-blob, ibm-db, pgvecto-rs, pgvector, psycopg, psycopg2-binary, pyzmq, Redis, weaviate-client, lancedb, oracledb, DuckDB, pymilvus, tablestore, chromadb, falkordb, MySQL, pinecone, clickhouse-connect, gcsfs, pyiceberg, pymochow, pymysql, pyobvector, s3fs, tcvectordb, typesense, ElevenLabs, graphql-core, Ray, tinycss2, ipywidgets, matplotlib-inline, argon2-cffi, azure-identity, google-auth-httplib2, google-auth-oauthlib, pyjwt, msal, einops, firecrawl-py, guardrails-ai, mem0ai, opencv-python, PaddlePaddle, tavily-python, ibm-watsonx-ai, cohere, LangChain, MCP, dashscope, fastembed, flagembedding, sentencepiece, ModelScope, Ollama, openvino, tritonclient, vLLM, datasets, exa-py, flashrank, hnswlib, langfuse, mlx, mlx-lm, nomic, optimum, paddleocr, peft, presidio-analyzer, bleach, mistune, nbformat, newspaper3k, xlrd, bs4, html2text, unstructured, defusedxml, lxml, pymupdf, docx2txt, markdownify, docling, lxml-html-clean, markitdown, nbconvert, pdf2image, pdfplumber, pypdf, pypdf2, youtube-transcript-api, rfc3339-validator, docling-core, pydantic-core, opentelemetry-api, opentelemetry-semantic-conventions, prometheus-client, python-json-logger, boto3, docker, Alibaba Cloud, OpenTelemetry

## Side by side

| | aider | llama_index |
|---|---|---|
| Size | 40,345 lines written, 80 code files | 473,236 lines written, 2,055 code files |
| Who writes it | 89.5% of its commits signed by AI. With Aider, Gemini CLI, Codex, and Claude Code | 0.2% of its commits signed by AI. With Claude Code, Cursor, and GitHub Copilot |
| Activity | Last push May 22, 2026, 12,461 commits, 49,968 stars | Last push November 5, 2026, 7,963 commits, 52,820 stars |
| Tests | 57 test files. 42.5% of its code files have a test that imports them | 1,607 test files. 46.5% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, aider or llama_index?

llama_index, with 473,236 lines written; aider has 40,345.

The proof: [run-llama/llama_index's code at commit 444fdf0](https://github.com/run-llama/llama_index/tree/444fdf0684707de62ebb447d658dba137dd9cb99)

### Which has more GitHub stars, aider or llama_index?

llama_index, with 52,820 stars; aider has 49,968.

The proof: [run-llama/llama_index on GitHub](https://github.com/run-llama/llama_index)

### Which has more tests, aider or llama_index?

llama_index, with 1,607 test files; aider has 57.

The proof: [run-llama/llama_index's code at commit 444fdf0](https://github.com/run-llama/llama_index/tree/444fdf0684707de62ebb447d658dba137dd9cb99)

### Which was updated more recently, aider or llama_index?

llama_index: its last push was on November 5, 2026, and aider's on May 22, 2026.

The proof: [run-llama/llama_index's commits on GitHub](https://github.com/run-llama/llama_index/commits)

### Which has more commits signed by AI, aider or llama_index?

aider: an AI signed 89.5% of its commits, with Aider, Gemini CLI, Codex, and Claude Code; in llama_index, 0.2%.

The proof: [the commits each tool signed in Aider-AI/aider](https://seerepo.com/r/Aider-AI/aider/ai)

## Sources

- Aider-AI/aider: Read on November 5, 2026, at commit 5dc9490 (https://github.com/Aider-AI/aider/tree/5dc9490bb35f9729ef2c95d00a19ccd30c26339c)
- run-llama/llama_index: Read on November 5, 2026, at commit 444fdf0 (https://github.com/run-llama/llama_index/tree/444fdf0684707de62ebb447d658dba137dd9cb99)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.