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New TIL: Using Codex CLI with gpt-oss:120b on an NVIDIA DGX Spark via Tailscale til.simonwillison.net/llms/codex-s...

til.simonwillison.netUsing Codex CLI with gpt-oss:120b on an NVIDIA DGX Spark via TailscaleI've written about the DGX Spark before. Here's how I got OpenAI's Codex CLI to run on my Mac against a gpt-oss:120b model running on the DGX Spark via a Tailscale network.

7/11/25, 7:23 am1 repost26 likes

Antonio Zugaldia

@zugaldia.com

7 Nov 2025

This is exactly my setup but with a more modest model and a Jetson Thor dev kit. I also set up Riva with Whisper for local speech recognition (I'm surprised Ollama does not support audio input yet).