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Gemini 4 Argon API pricing doubles on 1 December

Google has put an end date on the introductory rate for its flagship model: standard pricing takes over in three weeks, at twice the cost per million tokens.

Source: Google AI for Developers

Google’s pricing page for Gemini 4 Argon now carries an end date on the introductory rate it launched with last month. From 1 December, input moves from $2.00 to $4.00 per million tokens, output from $10.00 to $20.00, and context caching from $0.10 to $0.20 per million tokens. The original general-availability announcement in October gave the discounted rate but no expiry date; this one has now been added.

Argon is Standard-tier only, with implicit caching but not explicit caching, and is not available on the Free tier.

Why it matters: anyone who prototyped or shipped against Argon’s launch pricing is building on a number that stops applying in three weeks. Re-run your cost estimates against the $4/$20 rate before committing to it for anything beyond December, and check whether a cheaper model now covers the same job at the old price.

The caveat: Google has not said whether the doubled rate is itself permanent, only that it takes effect from 1 December.

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