A agentindex
Comparison

OpenAI Codex vs Void

A like-for-like, spec-level comparison. Both entries are verified against their docs and repo.

OpenAI Codex

OpenAI's open-source agentic coding CLI.

  • + Open-source CLI
  • + Sandboxed command execution
  • − OpenAI models only
  • − Newer, less battle-tested than incumbents

Void

An open-source Cursor alternative.

  • + Open-source Cursor-like UX
  • + Privacy-first with BYOK
  • − Young project
  • − Smaller plugin ecosystem
Spec OpenAI Codex Void
Category coding-agent coding-agent
License Apache-2.0 Apache-2.0
Open source Yes Yes
Self-hostable No No
MCP support Yes Yes
Pricing usage free
Starting price Pay per token (OpenAI API) BYOK usage cost
Models gpt claude, gpt, local, byok
Languages multi typescript
GitHub stars 93.6k 28.8k
Last activity 2026-06-25 2026-06-02