Source: https://seerepo.com/compare/microsoft/semantic-kernel/vs/run-llama/llama_index
Markdown source: https://seerepo.com/compare/microsoft/semantic-kernel/vs/run-llama/llama_index.md
Description: semantic-kernel and llama_index share 11 technologies: OpenAI, AIOHTTP, azure-identity, azure-ai-agents, azure-ai-projects, MCP, defusedxml, jinja2, Pydantic, opentelemetry-api, and OpenTelemetry. semantic-kernel is written in C# and llama_index in Python.

# semantic-kernel vs llama_index

semantic-kernel and llama_index share 11 technologies: OpenAI, AIOHTTP, azure-identity, azure-ai-agents, azure-ai-projects, MCP, defusedxml, jinja2, Pydantic, opentelemetry-api, and OpenTelemetry. semantic-kernel is written in C# and llama_index in Python.

- [microsoft/semantic-kernel](https://seerepo.com/r/microsoft/semantic-kernel): Integrate cutting-edge LLM technology quickly and easily into your apps
- [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: OpenAI, AIOHTTP, azure-identity, azure-ai-agents, azure-ai-projects, MCP, defusedxml, jinja2, Pydantic, opentelemetry-api, OpenTelemetry
- Only in semantic-kernel: Npgsql, Microsoft.Extensions.Hosting, EntityFramework, System.IdentityModel.Tokens.Jwt, Azure.AI.OpenAI, Microsoft.Extensions.AI.AzureAIInference, Microsoft.Extensions.AI.OpenAI, Microsoft.Extensions.AI, Microsoft.ML.OnnxRuntime, Handlebars.Net, YamlDotNet, DocumentFormat.OpenXml, Markdig, JsonSchema.Net, JsonSchema.Net.Generation, Microsoft.OpenApi, openapi-core, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Abstractions
- Only in llama_index: starlette, aiomysql, aiosqlite, async-lru, asyncpg, azure-cosmos, azure-data-tables, azure-search-documents, azure-storage-blob, ibm-db, nebula3-python, oss2, pgml, pgvecto-rs, pgvector, pickleshare, psycopg, psycopg2-binary, pyathena, pydrive, pylance, pymongo, python-arango, pyvespa, pyzmq, Redis, snowflake-sqlalchemy, tantivy, weaviate-client, Neo4j, aioboto3, pyarrow, lancedb, oracledb, DuckDB, pymilvus, pysolr, SQLite, tablestore, aperturedb, astrapy, chromadb, dashvector, falkordb, jaguardb-http-client, MySQL, pinecone, clickhouse-connect, couchdb3, gcsfs, opendal, pyairtable, pyiceberg, pymochow, pymysql, pyobvector, s3fs, tcvectordb, typesense, ElevenLabs, anyio, graphql-core, jupyter-core, jupyterlab-server, tornado, Ray, jupyterlab-pygments, soupsieve, tinycss2, ipywidgets, jupyter-server-terminals, jupyterlab-widgets, matplotlib-inline, prompt-toolkit, widgetsnbextension, matplotlib, Rich, SQLAlchemy, argon2-cffi, argon2-cffi-bindings, Google, google-auth-httplib2, google-auth-oauthlib, cryptography, pyjwt, msal, argilla, azure-ai-inference, contextual-client, diff-cover, einops, firecrawl-py, friendli-client, guardrails-ai, llama-cpp-python, llama-index-core, llama-index-embeddings-dashscope, llama-index-embeddings-huggingface, llama-index-embeddings-openai, llama-index-llms-anthropic, llama-index-llms-azure-openai, llama-index-llms-huggingface, llama-index-llms-llama-cpp, llama-index-llms-openai, llama-index-llms-openai-like, llama-index-node-parser-dashscope, llama-index-program-guidance, llama-index-readers-dashscope, llama-index-readers-database, llama-index-readers-remote, llama-index-readers-upstage, llama-index-readers-web, llama-index-response-synthesizers-google, llama-index-utils-azure, llama-index-utils-huggingface, llama-index-utils-qianfan, llama-index-vector-stores-google, llama-index-workflows, mem0ai, ms-swift, open-clip-torch, opencv-python, openinference-instrumentation-llama-index, openvino-tokenizers, PaddlePaddle, portkey-ai, reka-api, tavily-python, torch, llama-index-instrumentation, transformers, ibm-watsonx-ai, cohere, LangChain, tiktoken, sentence-transformers, dashscope, fastembed, flagembedding, llama-cloud, nltk, optimum-intel, sentencepiece, ai21, aleph-alpha-client, chonkie, gigachat, guidance, igptai, konko, litellm, mixedbread, ModelScope, octoai, Ollama, openvino, openvino-genai, premai, scikit-learn, tritonclient, vLLM, voyageai, zep-python, zhipuai, agent-search, aimon, argilla-llama-index, assemblyai, bm25s, browserbase, cleanlab-tlm, cognee, colpali-engine, datasets, exa-py, flashrank, hnswlib, honeyhive, instructorembedding, isaacus, langfuse, llmlingua, llmsherpa, marvin, mlx, mlx-lm, nomic, notdiamond, optimum, optimum-habana, paddleocr, peft, presidio-analyzer, presidio-anonymizer, promptlayer, psychicapi, pydi-client, rank-llm, span-marker, superlinked, tokenizers, uptrain, vectorize-client, videodb, beautifulsoup4, bleach, camelot-py, ghostscript, llama-index-readers-file, llama-index-readers-youtube-transcript, maincontentextractor, marker-pdf, markupsafe, mistune, nbformat, newspaper3k, nougat-ocr, pandocfilters, webencodings, xlrd, pillow, bs4, html2text, unstructured, lxml, pymupdf, filetype, bagel, docx2txt, markdownify, olefile, pytesseract, dgml-utils, docling, layoutir, llama-parse, lxml-html-clean, markitdown, nbconvert, pdf2image, pdfplumber, pypdf, pypdf2, striprtf, svglib, tika, tinytag, youtube-transcript-api, fastjsonschema, fqdn, jsonschema-specifications, marshmallow, referencing, rfc3339-validator, rfc3986-validator, docling-core, annotated-types, jsonschema, pydantic-core, opentelemetry-semantic-conventions, prometheus-client, psutil, python-json-logger, boto3, docker, Alibaba Cloud, oci

## Side by side

| | semantic-kernel | llama_index |
|---|---|---|
| Size | 538,799 lines written, 1,588 code files | 473,236 lines written, 2,055 code files |
| Who writes it | 2.5% of its commits signed by AI. With GitHub Copilot, Claude Code, and Cursor | 0.2% of its commits signed by AI. With Claude Code, Cursor, and GitHub Copilot |
| Activity | Last push November 7, 2026, 5,136 commits, 28,745 stars | Last push November 8, 2026, 7,964 commits, 52,863 stars |
| Tests | 1,025 test files. 64.6% 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, semantic-kernel or llama_index?

semantic-kernel, with 538,799 lines written; llama_index has 473,236.

The proof: [microsoft/semantic-kernel's code at commit df1cb33](https://github.com/microsoft/semantic-kernel/tree/df1cb33d0d32699c8d6a2e5b3ea7e5f8990d86d5)

### Which has more GitHub stars, semantic-kernel or llama_index?

llama_index, with 52,863 stars; semantic-kernel has 28,745.

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

### Which has more tests, semantic-kernel or llama_index?

llama_index, with 1,607 test files; semantic-kernel has 1,025.

The proof: [run-llama/llama_index's code at commit fe107aa](https://github.com/run-llama/llama_index/tree/fe107aab65e46d1d07c80663182691970417bbd9)

### Which was updated more recently, semantic-kernel or llama_index?

llama_index: its last push was on November 8, 2026, and semantic-kernel's on November 7, 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, semantic-kernel or llama_index?

semantic-kernel: an AI signed 2.5% of its commits, with GitHub Copilot, Claude Code, and Cursor; in llama_index, 0.2%.

The proof: [the commits each tool signed in microsoft/semantic-kernel](https://seerepo.com/r/microsoft/semantic-kernel/ai)

## Sources

- microsoft/semantic-kernel: Read on November 8, 2026, at commit df1cb33 (https://github.com/microsoft/semantic-kernel/tree/df1cb33d0d32699c8d6a2e5b3ea7e5f8990d86d5)
- run-llama/llama_index: Read on November 10, 2026, at commit fe107aa (https://github.com/run-llama/llama_index/tree/fe107aab65e46d1d07c80663182691970417bbd9)

## 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.