CodeAltavsvix
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
CodeAlta
Alexandre Mutel · Terminal agent
#114OSSMCP
Panel
6.30 spec wins
- Reliability
- 5.8
- Usefulness
- 6.2
- Cost
- 7.5
- Longevity
- 5.7
“Attach files with an at sign and GitHub issues with a hash, so your prompt now has the same syntax as a social media post.”
vix
vix · Terminal agent
#137OSSMCP
Panel
6.32 spec wins
- Reliability
- 5.5
- Usefulness
- 6.3
- Cost
- 7.8
- Longevity
- 5.7
“It has stem agents that maximise cache reuse, the first time anyone has made prompt caching sound botanical.”
Spec by spec
| Spec | CodeAlta | vix |
|---|---|---|
| Architecture | ||
| Category | Terminal agent | Terminal agent |
| Runs | local | local |
| Platforms | macos, linux, windows | macos, linux |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | Yes | Yes |
| MCP server | No | No |
| Capabilities | ||
| Runs terminal commands | YesHost tools execute the agent's tool calls, and an in-session "alta" live tool automates local workflows. | Yes |
| Multi-file edits | Yes | Yes |
| Git operations | No | No |
| Browser control | No | No |
| Sandboxed execution | No | YesThe README lists sandboxed execution among the agent features without naming the isolation mechanism. |
| Multi-agent orchestration | YesDelegated work and plugin orchestration adapters run through the same session runtime; different sessions execute concurrently. | Yes |
| Headless / CI mode | No | No |
| Models | ||
| Backbone | Codex, GitHub Copilot, xAI Grok, OpenAI, Azure OpenAI, Alibaba, Anthropic, Gemini, Vertex | Anthropic, OpenAI, OpenRouter, AWS Bedrock |
| Bring your own model | Yes | Yes |
| Local models | No | 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 | BSD-2-Clause | AGPL-3.0 |
| GitHub stars | 227 | 280 |
Which one would each critic pick
| Critic | CodeAlta | vix | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 6.0 | 6.8 | vix — Pick it if you review plans better than you review diffs; pick something quieter if a voice walkthrough sounds like a meeting you did not schedule. |
| El Crítico | 5.5 | 6.3 | vix — The agent reads and edits minified code through a virtual filesystem, so every change has to be mapped back to the real file, and that mapping can fail. |
| El Profesor | 7.0 | 6.3 | CodeAlta — A session actor per conversation serialises prompts, compacts long histories and journals every step, which places conversation state in the runtime rather than the provider. |
| La Inversora | 5.8 | 6.0 | vix — Five distinct product ideas in one repository with 274 stars is more surface than a small team can defend for long. |
| La Jefa | 6.0 | 5.5 | CodeAlta — Zero licence cost, and it installs as a global tool through the package manager my Windows fleet already runs, against Copilot and Codex subscriptions finance already pays. |
| El Hacker | 7.5 | 7.3 | CodeAlta — BSD-2-Clause, MCP servers wired from a documented config, plus local plugins and skill folders that follow the Agent Skills layout so my existing ones drop straight in. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.