All tasks / Tools
Xum (formerly Mux)
Open-source desktop and browser app from Coder for running parallel coding agents in isolated workspaces with any provider.
- Coder
- Local or cloud
- Free, open source
Where it ranks
- –CodingCoding agents · Local · no rated model available here yetWith cloud models: tier S (via Claude Opus 5.5)
Ranked by its own benchmark result where it has one; otherwise by the best model it offers.
Facts
- Vendor
- Coder
- Approach
- Coding agents
- Where it runs
- Runs fully on your hardware with local models; cloud models optional
- Interface
- Desktop app, Web app
- Skill level
- Intermediate: some setup or configuration
- Price
- Free, open source
- Pricing notes
- Open source (AGPL-3.0); bring your own provider keys or Ollama local models; optional Xum Gateway evaluation credits.
- Source code
- Open source (AGPL-3.0)
- GitHub stars
- 2.1k (19 Oct 2026)
- Last verified
- 19 Oct 2026
Price from xum.cdr.dev, 19 Oct 2026.
Models it gives you
- SClaude Opus 5.5Anthropic · closed
- SGPT-6 AstraOpenAI · closed
- SClaude Sonnet 5.5Anthropic · closed
- BGrok 4.7xAI · closed
- CGPT-6 LunaOpenAI · closed
Its own benchmark results
| Benchmark | Result | Entry on the leaderboard | As of | Source |
|---|---|---|---|---|
| Terminal-Bench 2.0 | 74.6% | Mux + GPT-5.3-Codexlisted as 'Mux' (agent org Coder; the product was renamed Xum); rank 18 of 142 entries; raw accuracy 74.61 ± 2.51; entry date 2026-02-05; not verified; read via the site's leaderboard-read API (page is client-rendered) | 19 Oct 2026 | tbench.ai |