Summary & Key Takeaways ​

• llm-gemini 0.35 adds support for the new Gemini 4 Argon model.
• Gemini 4 Argon is available via the Gemini API and a $100/month subscription.
• Initial pricing is $2/million input and $10/million output, doubling on December 1st.
• The article provides benchmark cost comparisons, showing Argon as competitive.
• Gemini models are noted for producing excellent SVGs, including pelican illustrations.

Our Commentary ​

Gemini 4 Argon is here, and Simon Willison is on it with llm-gemini support. The pricing details are always the most interesting part for me. That price doubling on December 1st is a bit of a curveball, making it align with Opus 5.5. It really drives home that raw token cost isn't the only metric; what matters is how efficiently a model achieves a goal within an agentic workflow. The benchmark comparisons are super valuable for anyone trying to pick the right model.