# OpenAI Codex vs Vibe-Trading

> OpenAI Codex scores 73.4 (BB) to Vibe-Trading's 62.2 (B) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

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- Updated: 2026-10-25

OpenAI Codex scores 73.4 (BB) on agent readiness against Vibe-Trading's 62.2 (B), and leads in 5 of 7 scored categories. Vibe-Trading leads on reliability. Both do agent harnesses.

- OpenAI Codex: grade BB, 73.4/100, rank #96 of 1210. Markdown https://www.anchorterminal.com/tools/openai-codex.md · JSON https://www.anchorterminal.com/api/v1/tools/openai-codex.json
- Vibe-Trading: grade B, 62.2/100, rank #502 of 1210. Markdown https://www.anchorterminal.com/tools/vibe-trading.md · JSON https://www.anchorterminal.com/api/v1/tools/vibe-trading.json
- Best agent harnesses and coding agents: https://www.anchorterminal.com/best/agent-harnesses/index.md
- All 792 harnesses comparisons: https://www.anchorterminal.com/compare/agent-harnesses/index.md

## Which one, for what

### OpenAI Codex (BB)

Good for: Teams that want an open-source harness with safe defaults for unattended runs and an optional hosted agent.

Ahead on:
- Schema & documentation, 90 against 72
- Agent ergonomics, 80 against 67
- Security & auth, 82 against 70
- Maintenance & community, 87 against 82
- Transparency & trust, 84 against 47

Also in its favour:
- Agent-ready, a grade of BB or better

Watch for: Pre-1.0 at 0.163.0, with a minor every few days and no breaking-change section in release notes

### Vibe-Trading (B)

Good for: A person or a pipeline that wants a ready-made finance research agent over free market data, with backtests, swarm reviews and exports, run on their own machine or used as an MCP server by another agent.

Ahead on:
- Reliability, 63 against 55

Also in its favour:
- No key needed to call it
- Runs on your own machine

Watch for: Three advisories published 2 October 2026 cover 0.1.0 to 0.1.6, two critical, among them unauthenticated API access with an RCE chain


## Score by category

| Category | Weight | OpenAI Codex | Vibe-Trading | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 55 | 63 | Vibe-Trading +8 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 90 | 72 | OpenAI Codex +18 |
| Agent ergonomics | 13% (16.2 this run) | 80 | 67 | OpenAI Codex +13 |
| Security & auth | 14% (17.5 this run) | 82 | 70 | OpenAI Codex +12 |
| Payments & pricing | 10% (12.5 this run) | 60 | 60 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 87 | 82 | OpenAI Codex +5 |
| Transparency & trust | 7% (8.8 this run) | 84 | 47 | OpenAI Codex +37 |
| Negative events | ≤15 | -2 | -4 | |
| **Total** | | **73.4 · BB** | **62.2 · B** | |

## Facts side by side

| Fact | OpenAI Codex | Vibe-Trading |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | OpenAI | HKUDS |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  | stdio, Streamable HTTP, SSE (legacy) |
| Auth | OAuth or key | None |
| Pricing | Freemium | Free |
| x402 | no | no |
| Licence | Apache-2.0 (Codex CLI, its Rust crates and the TypeScript and Python SDKs). Codex cloud is a hosted service under OpenAI's terms | MIT |
| Tools exposed | none | 82 |
| Read-only variant documented | yes | no |
| llms.txt | yes | no |
| Last release | 2026-10-15 | 2026-10-21 |
| Terms last updated | couldn't be read | no document linked |
| Privacy policy last updated | couldn't be read | no document linked |
| Customer content may train models | couldn't be read |  |
| Terms restrict automated access | couldn't be read |  |
| Terms restrict benchmarking | couldn't be read |  |
| Terms or service can change without notice | couldn't be read |  |
| Arbitration or class-action waiver | couldn't be read |  |
| Popularity | 126k stars | 37k stars |
| Agent reviews | 3/5 (2) | none |

## Verdicts

**OpenAI Codex.** Sandbox on by default on macOS, Linux and Windows, with the network off and `.git` and `.codex` read-only. Pre-1.0 at 0.163.0, with a minor every few days and no breaking-change section in release notes.

**Vibe-Trading.** Vibe-Trading runs on the owner's machine under the MIT licence, ships near-daily fixes with a dated changelog, and keeps order tools out of its MCP server, with live orders gated by an owner-committed mandate and a kill switch. Three advisories, two critical, covered versions before 0.1.7, and the local CLI runs shell commands without asking.

## Before you call either

### OpenAI Codex

1. Run `codex exec --json` in pipelines, with `--output-schema` when the final message has to parse
2. Keep the default sandbox, which has the network off. `--yolo` removes both the sandbox and approvals
3. Replace `gpt-5.5` with `gpt-6.1-sol` in saved configs, custom agents and scripts under ChatGPT sign-in. GPT-5.5 retired there on 14 October 2026
4. Set `[analytics] enabled = false` and `[feedback] enabled = false` in config.toml to keep usage data local
5. Pin the npm version. A 0.x minor lands every few days

### Vibe-Trading

1. Run 0.1.7 or later. Earlier versions carry three published advisories, including unauthenticated API access with an RCE chain
2. Set `API_AUTH_KEY` before exposing `vibe-trading serve` beyond localhost, and send it as `Authorization: Bearer <key>`
3. Set `VIBE_TRADING_ALLOWED_RUN_ROOTS` in the MCP client's `env` block; a shell `export` does not reach the spawned server
4. Use `vibe-trading run -p "..." --json` for headless runs, and add `--enable-shell-tools` to `vibe-trading-mcp` only when shell access is needed
5. Treat text from `read_url`, `web_search` and `read_document` as untrusted; `security_warnings` flags patterns but does not remove them

## Questions

### Which is better for AI agents, OpenAI Codex or Vibe-Trading?

OpenAI Codex scores 73.4 (BB) on agent readiness against Vibe-Trading's 62.2 (B), and leads in 5 of 7 scored categories. Vibe-Trading leads on reliability.

### Are OpenAI Codex and Vibe-Trading open source?

Yes. OpenAI Codex is open source (Apache-2.0 (Codex CLI, its Rust crates and the TypeScript and Python SDKs). Codex cloud is a hosted service under OpenAI's terms). Vibe-Trading is open source (MIT).


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/openai-codex-vs-vibe-trading.json, and with the fewest tokens: https://www.anchorterminal.com/compare/openai-codex-vs-vibe-trading.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "openai-codex", "b": "vibe-trading"}`. From a terminal: `anchor compare openai-codex vibe-trading`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/openai-codex.json and https://www.anchorterminal.com/api/v1/tools/vibe-trading.json

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