Head to head / Harness
Grok Build vs jcode
Grok Build: xAI's terminal coding agent, with plan mode, parallel subagents, and MCP. jcode: Rust coding agent built for running many parallel sessions in one repository.
| Fact | Harness | Harness |
|---|---|---|
| Kind | Harness | Harness |
| Status | Active | Active |
| Source | Open source | Open source |
| License | Apache-2.0 | MIT |
| Pricing | Freemium · Free · Plus $8/mo · Premium $30/mo · Super $100/mo · Ultra $200/mo | Freemium · Free · $10 $10/mo · $20 $20/mo · $50 $50/mo · $100 $100/mo · $200 $200/mo · $500 $500/mo · $1,000 $1,000/mo |
| Model access | Your subscription, Your API key | Your subscription, Your API key, Vendor credits |
| Platforms | macOS, Linux, Windows | macOS, Linux, Windows |
| Interfaces | CLI, TUI | CLI, TUI, Desktop |
| Install | curl -fsSL https://x.ai/cli/install.sh | bash | curl -fsSL https://jcode.sh/install | bash |
| GitHub | ★ 27.4k · checked 2026-10-18 | ★ 21.0k · checked 2026-10-18 |
| Last verified | 2026-10-18 | 2026-10-18 |
| Worktrees | ? | ? |
| Parallel agents | ✓ | ✓ |
| Subagents | ✓ | ✓ |
| MCP | ✓ | ? |
| Remote access | ? | ? |
| Cloud sandbox | ✗ | ✓ |
| Diff review | ✓ | ? |
| Plan mode | ✓ | ? |
✓ yes ✗ no ? not verified yet
How we check facts More head to heads