The llm-gemini 0.35 plugin adds support for Gemini 4 Argon
Simon Willison released llm-gemini 0.35 with support for Gemini 4 Argon. The model is available via Gemini API. Introductory prices are 2 USD per million input tokens and 10 USD per million output tokens; they are set to double from 1 December.
Simon Willison released version 0.35 of the llm-gemini plugin, which adds support for Gemini 4 Argon. According to his article, the model is available via Gemini API and also to customers on the 100 USD per month subscription.
Willison lists introductory pricing of 2 USD per million input tokens and 10 USD per million output tokens. Both rates are set to double from 1 December. He also notes that the price per token alone is not enough to compare costs: the number of tokens the model consumes to complete a specific task also matters.
Why it matters
Support in the plugin allows its users to try Gemini 4 Argon within their existing workflow. For API cost planning, it matters that the introductory rates are set to apply only until the announced price increase; budgets must also account for actual input and output token usage.
Release card
Gemini 4 Argon
- Inputs
- The model creates illustrations in SVG format.
- Price
- Introductory pricing is 2 USD per million input tokens and 10 USD per million output tokens. Both rates are set to double from 1 December.
- Availability
- The model is available via Gemini API and to customers on the 100 USD per month subscription. It is also supported by the llm-gemini 0.35 plugin.
- Creating illustrations in SVG format.
According to the article, the introductory token rates are the same as for GPT-6 Sol, half those for Claude Opus 5.5 and one fifth those for Claude Fable 5.1 and GPT-6 Astra. Simon Willison notes that the cost of completing a task also depends on the number of tokens consumed.
The card summarizes information from the article and any dated corrections, with a link to the original source. It is not our assessment of the model. It does not yet have a dedicated editorial profile. Model selection and other announcements →
Two audiences, two different impacts
What this means
For individuals
If you use the llm-gemini plugin, version 0.35 gives you access to another model to try on your tasks.
For a business
Teams using Gemini 4 Argon via the API must account for the announced doubling of input and output rates from 1 December when budgeting for operating costs.
DevelopmentCheck the original
Event sources
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