Gemini 4 Argon Pricing Guide: $2 Now, $4 From Dec 1

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Gemini 4 Argon costs $2 per million input tokens and $10 per million output tokens through November 30, 2026. From December 1, 2026, the price doubles to $4 input and $20 output. Here is a quick cost guide based on Google's October 13 launch posts.

Full story: Gemini 4 Argon: who can use it, model ID, benchmarks and FAQ

Gemini 4 Argon API prices

  • Until Nov 30, 2026 (introductory): $2 / 1M input tokens, $10 / 1M output tokens.
  • From Dec 1, 2026: $4 / 1M input tokens, $20 / 1M output tokens. Google's footnote says this applies to the Argon model intended for public access.
  • Cached input: 95% off the input price.
  • Token limit: 1M unified input-output token limit in the Gemini API.

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What you need to pay for access

  • Developers: the paid tier of the Gemini API (model ID gemini-4-argon). There is no free API tier listed.
  • Gemini app and AI Mode: a Google AI Pro or Ultra subscription.
  • Google Antigravity: Google AI Ultra subscribers.

Budget tip

If you are testing Argon now, plan for your token bill to double on December 1 at the same usage. Heavy reuse of the same prompt context benefits most from the 95% cached-input discount.

Read next: our complete Gemini 4 Argon guide.

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