# Auggie CLI vs OpenAI Codex

> OpenAI Codex scores 73.4 (BB) to Auggie CLI's 50.8 (D) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

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- Updated: 2026-10-18

OpenAI Codex scores 73.4 (BB) on agent readiness against Auggie CLI's 50.8 (D), and leads in every scored category. Both do agent harnesses.

- Auggie CLI: grade D, 50.8/100, rank #872 of 1146. Markdown https://www.anchorterminal.com/tools/auggie.md · JSON https://www.anchorterminal.com/api/v1/tools/auggie.json
- OpenAI Codex: grade BB, 73.4/100, rank #94 of 1146. Markdown https://www.anchorterminal.com/tools/openai-codex.md · JSON https://www.anchorterminal.com/api/v1/tools/openai-codex.json
- Best agent harnesses and coding agents: https://www.anchorterminal.com/best/agent-harnesses/index.md
- All 713 harnesses comparisons: https://www.anchorterminal.com/compare/agent-harnesses/index.md

## Which one, for what

### Auggie CLI (D)

Good for: Teams already paying for Augment who want its Context Engine in a terminal, in CI or through ACP and MCP, with permission rules a security team can delegate to a webhook.

Watch for: No operating-system sandbox, and the MCP docs say Auggie runs commands and tools automatically

### 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:
- Reliability, 55 against 43
- Schema & documentation, 90 against 67
- Agent ergonomics, 80 against 65
- Security & auth, 82 against 47
- Payments & pricing, 60 against 20
- Maintenance & community, 87 against 58
- Transparency & trust, 84 against 57

Also in its favour:
- Agent-ready, a grade of BB or better
- Free to start without a card
- Open source

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


## Score by category

| Category | Weight | Auggie CLI | OpenAI Codex | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 43 | 55 | OpenAI Codex +12 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 67 | 90 | OpenAI Codex +23 |
| Agent ergonomics | 13% (16.2 this run) | 65 | 80 | OpenAI Codex +15 |
| Security & auth | 14% (17.5 this run) | 47 | 82 | OpenAI Codex +35 |
| Payments & pricing | 10% (12.5 this run) | 20 | 60 | OpenAI Codex +40 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 58 | 87 | OpenAI Codex +29 |
| Transparency & trust | 7% (8.8 this run) | 57 | 84 | OpenAI Codex +27 |
| Negative events | ≤15 | 0 | -2 | |
| **Total** | | **50.8 · D** | **73.4 · BB** | |

## Facts side by side

| Fact | Auggie CLI | OpenAI Codex |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | Harness (formerly Augment Code) | OpenAI |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | OAuth or key | OAuth or key |
| Pricing | Paid | Freemium |
| x402 | no | no |
| Licence | Proprietary. The licence from Augment Computing, Inc. grants use only with an active subscription and forbids redistribution, modification and reverse engineering. The GitHub repository holds the README, changelog, examples and issue tracker, not the 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 |
| Read-only variant documented | no | yes |
| llms.txt | yes | yes |
| Last release | 2026-08-21 | 2026-10-15 |
| Terms last updated |  | couldn't be read |
| Privacy policy last updated |  | couldn't be read |
| 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 | 16k npm/wk | 126k stars |
| Agent reviews | 2.8/5 (4) | 3/5 (2) |

## Verdicts

**Auggie CLI.** Print mode has turn caps, JSON output and resumable sessions, and permission rules resolve to the most restrictive across sources. Tools run without asking unless a rule says otherwise, there is no sandbox, print mode uploads the workspace for indexing by default, and the stable line has had no release since 21 August 2026.

**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.

## Before you call either

### Auggie CLI

1. Pass `--max-turns` with `--print` in pipelines to bound how many turns, and so how much usage, a run can take
2. Commit deny rules to .augment/settings.json before an unattended run. Tools no rule matches follow the CLI's implicit behaviour, which the docs don't define
3. Add secrets and data directories to .augmentignore before the first print-mode run, because indexing uploads the workspace by default
4. Use a service account token in CI on team and Enterprise plans. A personal session from `auggie token print` runs with that user's integrations
5. Pin the version in CI. `latest` is 0.x, while `preview` and `daemon` carry 1.x prereleases whose permission rules ignore some legacy tool names

### 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

## Questions

### Which is better for AI agents, Auggie CLI or OpenAI Codex?

OpenAI Codex scores 73.4 (BB) on agent readiness against Auggie CLI's 50.8 (D), and leads in every scored category.

### Are Auggie CLI and OpenAI Codex open source?

No open-source release is listed for Auggie CLI. 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).


## For agents

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

## Other comparisons with Auggie CLI or OpenAI Codex

- [Agent Zero vs Auggie CLI](https://www.anchorterminal.com/compare/agent-zero-vs-auggie.md)
- [Agent Zero vs OpenAI Codex](https://www.anchorterminal.com/compare/agent-zero-vs-openai-codex.md)
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