Run OpenAI Codex Command Line Interface in Just 50 Lines of C# Code on Claude, Gemini, or Llama
agents anthropic claude gemini gpt-4 gpt-5 llama openai
| Source: Dev.to | Original article
Run OpenAI Codex on alternative models like Claude or Llama using Cadenza.Agent.
Developers can now run OpenAI Codex CLI on alternative models like Claude, Gemini, or Llama, thanks to a new solution called Cadenza.Agent. This breakthrough allows users to bypass the Responses API lock and route Codex through OpenRouter, effectively choosing their preferred model as the brain. As we reported on the limitations of AI models, including OpenAI's admission of mathematically inevitable hallucinations, this development is significant.
The ability to switch between models like Claude Opus 4.6, Gemini, or Llama, and even upcoming models like GPT-5.3-Codex, opens up new possibilities for developers. This move also intensifies the competition between OpenAI and Anthropic, as evident from the simultaneous release of Claude Opus 4.6 and GPT-5.3-Codex. With Cadenza.Agent, developers can leverage the strengths of different models, potentially leading to more accurate and reliable results.
As the AI landscape continues to evolve, it will be interesting to watch how this development impacts the adoption of various models. Will developers flock to Claude, Gemini, or Llama, or will OpenAI's GPT-5.3-Codex remain the top choice? The availability of libraries like MukundaKatta's claude-workspace and the Python mcp Projects on LibHunt will also play a crucial role in shaping the future of AI development.
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