Source: https://seerepo.com/compare/chroma-core/chroma/vs/vllm-project/vllm
Markdown source: https://seerepo.com/compare/chroma-core/chroma/vs/vllm-project/vllm.md
Description: chroma and vllm share 15 technologies: axum, FastAPI, Tokio, tower, OpenAI, indicatif, tokenizers, Pydantic, jsonschema, opentelemetry-api, tracing, OpenTelemetry, tracing-subscriber, psutil, and Hugging Face. chroma is written in Rust and vllm in Python.

# chroma vs vllm

chroma and vllm share 15 technologies: axum, FastAPI, Tokio, tower, OpenAI, indicatif, tokenizers, Pydantic, jsonschema, opentelemetry-api, tracing, OpenTelemetry, tracing-subscriber, psutil, and Hugging Face. chroma is written in Rust and vllm in Python.

- [chroma-core/chroma](https://seerepo.com/r/chroma-core/chroma): Search infrastructure for AI
- [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: axum, FastAPI, Tokio, tower, OpenAI, indicatif, tokenizers, Pydantic, jsonschema, opentelemetry-api, tracing, OpenTelemetry, tracing-subscriber, psutil, Hugging Face
- Only in chroma: aws-sdk-s3, pgx, pq, s3, sqlx-postgres, sqlx-sqlite, arrow, sqlx, foyer, Postgres, object_store, SQLite, usearch, uvicorn, Rich, Ratatui, crossterm, dialoguer, utoipa-swagger-ui, gorm.io/gorm, pypika, sea-query, bcrypt, github.com/aws/aws-sdk-go-v2/credentials, hf-hub, onnxruntime, rmcp, parquet, tree-sitter-md, validator, schemars, k8s-openapi, opentelemetry-exporter-otlp-proto-grpc, opentelemetry-instrumentation-fastapi, github.com/pingcap/log, go.uber.org/zap, tracing-opentelemetry, github.com/rs/zerolog, google-cloud-googleapis, boto3, go.opentelemetry.io/otel, go.opentelemetry.io/otel/metric, github.com/aws/aws-sdk-go-v2, github.com/aws/aws-sdk-go-v2/config, go.opentelemetry.io/contrib/instrumentation/github.com/aws/aws-sdk-go-v2/otelaws, go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc, go.opentelemetry.io/otel/exporters/otlp/otlptrace, go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc, go.opentelemetry.io/otel/sdk, go.opentelemetry.io/otel/sdk/metric, go.opentelemetry.io/otel/trace, kube, kubernetes, opentelemetry-otlp, @xenova/transformers, cohere-ai, ollama, Ajv, together-ai
- Only in vllm: gitdb, pyzmq, starlette, Ray, AIOHTTP, mkdocs-material, NVIDIA, peft, quack-kernels, sentencepiece, torch, transformers, einops, safetensors, triton, torchvision, datasets, torchaudio, MCP, tiktoken, markdown, markupsafe, pymdown-extensions, pillow, image, jinja2, msgspec, pydantic-core, python-json-logger, prometheus-client, opentelemetry-sdk, prometheus-fastapi-instrumentator

## Side by side

| | chroma | vllm |
|---|---|---|
| Size | 474,465 lines written, 886 code files | 2,375,117 lines written, 3,289 code files |
| Who writes it | 1.5% of its commits signed by AI. With Claude Code, Cursor, and Sweep | 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 7, 2026, 4,542 commits, 29,650 stars | Last push November 4, 2026, 24,593 commits, 96,302 stars |
| Tests | 345 test files. 31% 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, chroma or vllm?

vllm, with 2,375,117 lines written; chroma has 474,465.

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

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

vllm, with 96,302 stars; chroma has 29,650.

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

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

vllm, with 2,419 test files; chroma has 345.

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

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

chroma: its last push was on November 7, 2026, and vllm's on November 4, 2026.

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

### Which has more commits signed by AI, chroma 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 chroma, 1.5%.

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

## Sources

- chroma-core/chroma: Read on November 8, 2026, at commit 1a3ac2c (https://github.com/chroma-core/chroma/tree/1a3ac2c7c623adbd03ed2508dc27b98cdf26016d)
- 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.