Agent TARSvsCodeMachine
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
Agent TARS
ByteDance · Agent harness
OSSMCP
Panel
5.84 spec wins
- Reliability
- 5.5
- Usefulness
- 6.2
- Cost
- 6.8
- Longevity
- 4.8
“Its own showcase hands it a $5,000 budget and a Ritz-Carlton booking, which is one way to find out whether an agent stops.”
CodeMachine
CodeMachine · Agent harness
OSS
Panel
5.82 spec wins
- Reliability
- 5.3
- Usefulness
- 6.3
- Cost
- 6.0
- Longevity
- 5.3
“Its selling point is doing the thinking you were already supposed to be holding in your head.”
Spec by spec
| Spec | Agent TARS | CodeMachine |
|---|---|---|
| Architecture | ||
| Category | Agent harness | Agent harness |
| Runs | local | local |
| Platforms | macos, windows | macos, linux, windows |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | Yes | No |
| MCP server | No | No |
| Capabilities | ||
| Runs terminal commands | Yes | Yes |
| Multi-file edits | No | Yes |
| Git operations | No | No |
| Browser control | Yes | No |
| Sandboxed execution | No | No |
| Multi-agent orchestration | No | Yes |
| Headless / CI mode | Yes | YesIt drives the headless scripting mode that Claude Code, Codex, Cursor and other engines expose, rather than running unattended itself. |
| Models | ||
| Backbone | Claude, Doubao, Seed-VL, UI-TARS | Claude Code, Codex, Cursor |
| Bring your own model | Yes | Yes |
| Local models | Yes | No |
| Cost | ||
| Pricing model | byok | byok |
| Starts at | $0/mo | $0/mo |
| Free tier | Yes | Yes |
| Bring your own key | Yes | Yes |
| Openness | ||
| Open source | Yes | Yes |
| License | Apache-2.0 | Apache-2.0 |
| GitHub stars | 39,180 | 2,512 |
Which one would each critic pick
| Critic | Agent TARS | CodeMachine | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 6.3 | 6.0 | Agent TARS — Pick Agent TARS if the thing you need automated has no API and lives in a desktop app; pick Browser Use if it lives in a tab and you write Python. |
| El Crítico | 5.5 | 5.3 | Agent TARS — The README's newest entry is dated 2025-11-05 and the quick start still pins claude-3-7-sonnet-latest; two products share one repository and the cadence has slowed to a stop. |
| El Profesor | 6.0 | 6.0 | no preference |
| La Inversora | 5.3 | 5.0 | Agent TARS — A ByteDance research project: no pricing, free remote operators, weights on Hugging Face and ModelScope, and the business is Doubao tokens on Volcengine; strategic projects get shelved, not sold. |
| La Jefa | 5.0 | 4.8 | Agent TARS — Free, no SSO or audit trail anywhere, macOS and Windows only, so it cannot run on the Linux CI fleet, and support is a Discord server; a research release, not a vendor. |
| El Hacker | 7.0 | 7.5 | CodeMachine — Apache-2.0, one global npm install, and the workflow is a file I own rather than a hosted definition, which is the whole reason to use a layer like this. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.