Source: https://seerepo.com/compare/exo-explore/exo/vs/vllm-project/vllm
Markdown source: https://seerepo.com/compare/exo-explore/exo/vs/vllm-project/vllm.md
Description: exo and vllm share 11 technologies: FastAPI, Hugging Face, Tokio, AIOHTTP, datasets, tiktoken, transformers, jinja2, Pydantic, msgspec, and psutil. Both are written in Python.

# exo vs vllm

exo and vllm share 11 technologies: FastAPI, Hugging Face, Tokio, AIOHTTP, datasets, tiktoken, transformers, jinja2, Pydantic, msgspec, and psutil. Both are written in Python.

- [exo-explore/exo](https://seerepo.com/r/exo-explore/exo): Run frontier AI locally.
- [vllm-project/vllm](https://seerepo.com/r/vllm-project/vllm): A high-throughput and memory-efficient inference and serving engine for LLMs

## What they share and what sets them apart

- In common: FastAPI, Hugging Face, Tokio, AIOHTTP, datasets, tiktoken, transformers, jinja2, Pydantic, msgspec, psutil
- Only in exo: anyio, hypercorn, Tailwind CSS, lm-eval, math-verify, openai-harmony, python-daemon, loguru, log, env_logger, pyo3-log
- Only in vllm: axum, gitdb, pyzmq, starlette, Ray, tower, mkdocs-material, indicatif, NVIDIA, OpenAI, peft, quack-kernels, sentencepiece, torch, einops, safetensors, triton, torchvision, torchaudio, MCP, tokenizers, markdown, markupsafe, pymdown-extensions, pillow, image, jsonschema, pydantic-core, opentelemetry-api, python-json-logger, tracing, prometheus-client, tracing-subscriber, OpenTelemetry, opentelemetry-sdk, prometheus-fastapi-instrumentator

## Side by side

| | exo | vllm |
|---|---|---|
| Size | 161,527 lines written, 386 code files | 2,375,117 lines written, 3,289 code files |
| Who writes it | 12% of its commits signed by AI. With Claude Code, Cursor, and Jules | 12.8% of its commits signed by AI. With Claude Code, Codex, Gemini CLI, Cursor, GitHub Copilot, Devin, Mistral Vibe, CodeRabbit, Factory, and Qwen Code |
| Activity | Last push November 5, 2026, 2,248 commits, 48,204 stars | Last push November 4, 2026, 24,593 commits, 96,302 stars |
| Tests | 290 test files. 51.6% of its code files have a test that imports them | 2,419 test files. 60.2% 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, exo or vllm?

vllm, with 2,375,117 lines written; exo has 161,527.

The proof: [vllm-project/vllm's code at commit 75f6761](https://github.com/vllm-project/vllm/tree/75f67614971a44050140e3422c1a65fe5004a72b)

### Which has more GitHub stars, exo or vllm?

vllm, with 96,302 stars; exo has 48,204.

The proof: [vllm-project/vllm on GitHub](https://github.com/vllm-project/vllm)

### Which has more tests, exo or vllm?

vllm, with 2,419 test files; exo has 290.

The proof: [vllm-project/vllm's code at commit 75f6761](https://github.com/vllm-project/vllm/tree/75f67614971a44050140e3422c1a65fe5004a72b)

### Which was updated more recently, exo or vllm?

exo: its last push was on November 5, 2026, and vllm's on November 4, 2026.

The proof: [exo-explore/exo's commits on GitHub](https://github.com/exo-explore/exo/commits)

### Which has more commits signed by AI, exo or vllm?

vllm: an AI signed 12.8% of its commits, with Claude Code, Codex, Gemini CLI, Cursor, GitHub Copilot, Devin, Mistral Vibe, CodeRabbit, Factory, and Qwen Code; in exo, 12%.

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

## Sources

- exo-explore/exo: Read on November 5, 2026, at commit 1d72c2a (https://github.com/exo-explore/exo/tree/1d72c2a7154929d87f20ba11829601c6c7a937ef)
- vllm-project/vllm: Read on November 4, 2026, at commit 75f6761 (https://github.com/vllm-project/vllm/tree/75f67614971a44050140e3422c1a65fe5004a72b)

## 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.