Source: https://seerepo.com/compare/foundry-rs/foundry/vs/xai-org/grok-build
Markdown source: https://seerepo.com/compare/foundry-rs/foundry/vs/xai-org/grok-build.md
Description: foundry and grok-build share 10 technologies: axum, Tokio, tower, anstyle, indicatif, crossterm, Ratatui, schemars, tracing, and tracing-subscriber. Both are written in Rust.

# foundry vs grok-build

foundry and grok-build share 10 technologies: axum, Tokio, tower, anstyle, indicatif, crossterm, Ratatui, schemars, tracing, and tracing-subscriber. Both are written in Rust.

- [foundry-rs/foundry](https://seerepo.com/r/foundry-rs/foundry): Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.
- [xai-org/grok-build](https://seerepo.com/r/xai-org/grok-build): SpaceXAI's coding agent harness and TUI. Fullscreen, mouse interactive, extensible.

## What they share and what sets them apart

- In common: axum, Tokio, tower, anstyle, indicatif, crossterm, Ratatui, schemars, tracing, tracing-subscriber
- Only in foundry: alloy-trie, comfy-table, dialoguer, hkdf, rpassword, markdown, tracing-tracy
- Only in grok-build: aws-sdk-s3, rusqlite, SQLite, moka, sqlite-vec, OpenAI, Sentry, axum-server, fontdb, alacritty_terminal, ansi-to-tui, ratatui-core, tiny-skia, jsonwebtoken, oauth2, hmac, async-openai, agent-client-protocol, rmcp, bm25, kamadak-exif, image, minijinja, pulldown-cmark, infer, linkify, zip, htmd, html-escape, pdf_oxide, quick-xml, resvg, scraper, jsonschema, prometheus, OpenTelemetry, tracing-appender, tracing-opentelemetry, log, opentelemetry-otlp, fastrace-opentelemetry, opentelemetry-http, env_logger, prometheus-parse, tracing-chrome

## Side by side

| | foundry | grok-build |
|---|---|---|
| Size | 613,747 lines written, 714 code files | 1,982,128 lines written, 2,511 code files |
| Who writes it | 4% of its commits signed by AI. With Amp, Claude Code, Cursor, and GitHub Copilot | 0% of its commits signed by AI |
| Activity | Last push November 13, 2026, 9,510 commits, 10,772 stars | Last push September 29, 2026, 51 commits, 27,712 stars |
| Tests | 251 test files. 14.6% of its code files have a test that imports them | 1,077 test files. 52.1% 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, foundry or grok-build?

grok-build, with 1,982,128 lines written; foundry has 613,747.

The proof: [xai-org/grok-build's code at commit 2bdd1d6](https://github.com/xai-org/grok-build/tree/2bdd1d6a6369de0e8c68132ea4539e9abd9e14a8)

### Which has more GitHub stars, foundry or grok-build?

grok-build, with 27,712 stars; foundry has 10,772.

The proof: [xai-org/grok-build on GitHub](https://github.com/xai-org/grok-build)

### Which has more tests, foundry or grok-build?

grok-build, with 1,077 test files; foundry has 251.

The proof: [xai-org/grok-build's code at commit 2bdd1d6](https://github.com/xai-org/grok-build/tree/2bdd1d6a6369de0e8c68132ea4539e9abd9e14a8)

### Which was updated more recently, foundry or grok-build?

foundry: its last push was on November 13, 2026, and grok-build's on September 29, 2026.

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

### Which has more commits signed by AI, foundry or grok-build?

foundry: an AI signed 4% of its commits, with Amp, Claude Code, Cursor, and GitHub Copilot.

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

## Sources

- foundry-rs/foundry: Read on November 13, 2026, at commit b59c7b3 (https://github.com/foundry-rs/foundry/tree/b59c7b37745178b4201e261e1bc6b911133aa1ea)
- xai-org/grok-build: Read on November 8, 2026, at commit 2bdd1d6 (https://github.com/xai-org/grok-build/tree/2bdd1d6a6369de0e8c68132ea4539e9abd9e14a8)

## 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.