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My first Vibe RL experience | sriraam

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A log of how I used Prime Intellect and Codex to Vibe RL and got Qwen3-4B to beat GPT 4.1 mini by ~2x at drawing ASCII diagrams.

March 5, 2026•Sriraam Raja A log of how I used Prime Intellect and Codex to Vibe RL and got Qwen3-4B to beat GPT 4.1 mini by ~2x at ASCII diagrams. Before we dive in, I want to clarify what I mean by Vibe RL and how it is different from Vibe Coding as defined by Karpathy Sensei. Vibe RL obviously involves Vibe Coding, but the key distinctions are: The agent interacts with experiment tools in realtime and makes decisions without much prompting. Proposes concrete hypotheses with verifiable steps to analyze the results. Builds custom interfaces for collaborating with humans.…

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