Source: https://seerepo.com/compare/garrytan/gbrain/vs/linshenkx/prompt-optimizer
Markdown source: https://seerepo.com/compare/garrytan/gbrain/vs/linshenkx/prompt-optimizer.md
Description: gbrain and prompt-optimizer share 5 technologies: Vite, Express, MCP, Anthropic, and OpenAI. Both are written in TypeScript.

# gbrain vs prompt-optimizer

gbrain and prompt-optimizer share 5 technologies: Vite, Express, MCP, Anthropic, and OpenAI. Both are written in TypeScript.

- [garrytan/gbrain](https://seerepo.com/r/garrytan/gbrain): Garry's Opinionated OpenClaw/Hermes Agent Brain
- [linshenkx/prompt-optimizer](https://seerepo.com/r/linshenkx/prompt-optimizer): An AI prompt optimizer for writing better prompts and getting better AI results.

## What they share and what sets them apart

- In common: Vite, Express, MCP, Anthropic, OpenAI
- Only in gbrain: React
- Only in prompt-optimizer: Vue

## Side by side

| | gbrain | prompt-optimizer |
|---|---|---|
| Size | 1,909,212 lines written, 3,295 code files | 309,080 lines written, 784 code files |
| Who writes it | 7.6% of its commits signed by AI. With Claude Code, Codex, Devin, and Warp | 0.8% of its commits signed by AI. With Claude Code and Jules |
| Activity | Last push November 2, 2026, 9,177 commits, 31,432 stars | Last push October 30, 2026, 990 commits, 40,112 stars |
| Tests | 6,325 test files. 71.5% of its code files have a test that imports them | 476 test files. 47.3% 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, gbrain or prompt-optimizer?

gbrain, with 1,909,212 lines written in 3,295 code files; prompt-optimizer has 309,080 in 784.

The proof: [garrytan/gbrain's code at commit ca1281a](https://github.com/garrytan/gbrain/tree/ca1281a2ed3236ac45adddb2d08e84423769c321)

### Which has more GitHub stars, gbrain or prompt-optimizer?

prompt-optimizer, with 40,112 stars; gbrain has 31,432.

The proof: [linshenkx/prompt-optimizer on GitHub](https://github.com/linshenkx/prompt-optimizer)

### Which has more tests, gbrain or prompt-optimizer?

gbrain, with 6,325 test files; prompt-optimizer has 476.

The proof: [garrytan/gbrain's code at commit ca1281a](https://github.com/garrytan/gbrain/tree/ca1281a2ed3236ac45adddb2d08e84423769c321)

### Which was updated more recently, gbrain or prompt-optimizer?

gbrain: its last push was on November 2, 2026, and prompt-optimizer's on October 30, 2026.

The proof: [garrytan/gbrain's commits on GitHub](https://github.com/garrytan/gbrain/commits)

### Which has more commits signed by AI, gbrain or prompt-optimizer?

gbrain: an AI signed 7.6% of its commits, with Claude Code, Codex, Devin, and Warp; in prompt-optimizer, 0.8%.

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

## Sources

- garrytan/gbrain: Read on November 2, 2026, at commit ca1281a (https://github.com/garrytan/gbrain/tree/ca1281a2ed3236ac45adddb2d08e84423769c321)
- linshenkx/prompt-optimizer: Read on October 31, 2026, at commit 5951bd4 (https://github.com/linshenkx/prompt-optimizer/tree/5951bd427ee51f273415f1f63a87fc6620e47210)

## 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.