Gemini 4 Argon launch price: $2 per million tokens, until November 30

The Gemini 4 Argon launch price is $2.00 per million input tokens and $10.00 per million output tokens, and it only lasts until November 30, 2026. From December 1 the same usage costs double: $4.00 in and $20.00 out. If you are budgeting an app on Google's newest model, plan with the December number, not today's.

What Google announced about Gemini 4 Argon

On October 13, 2026, Google made Gemini 4 Argon available to developers and enterprises through the Gemini API. It runs on the paid tier: there is no free tier for Argon in the API, not even with a Google AI Pro subscription.

Gemini 4 Argon launch price and what changes on December 1

| | Until Nov 30, 2026 | From Dec 1, 2026 | |---|---|---| | Input, per 1M tokens | $2.00 | $4.00 | | Output, per 1M tokens | $10.00 | $20.00 | | Cached input, per 1M tokens | $0.10 | $0.20 |

Context caching is the one place to look twice: the cached rate is $0.10 per million tokens during the introductory period and $0.20 afterward. Argon only supports implicit caching.

What you get for that price

• A 1 million token limit per API request, counting input and output together.
• First place on the Vals Index, a benchmark covering finance, code, legal and tax tasks. This is a figure Google cites, not an independent test of ours.
• Prompt injection resistance: Google reports a 0.7% attack success rate over 15 adaptive attempts in the Gray Swan IPI evaluation. Again, vendor data.

Want the context-window details? Read the full breakdown of Gemini 4 Argon's 1 million tokens in a single response.

How to apply it in your business?

Do the math now, not in December. Say a workflow sends 10 million input tokens a month: that is $20 under the launch price and $40 from December 1, before output tokens and before caching discounts. Take your real monthly token count from your usage dashboard, multiply it by the December rates, and decide whether the project still makes sense. If the numbers only work at $2, you are building on a price that expires.

Two practical habits help: turn on context caching for repeated prompts, and keep prompts short enough that you are not paying for tokens the model never needed.

Frequently asked questions

How much does Gemini 4 Argon cost?

$2.00 per million input tokens and $10.00 per million output tokens until November 30, 2026. From December 1 it is $4.00 and $20.00.

Is there a free tier for Gemini 4 Argon?

No. Argon is available on the paid API tier only, and there is no free access for it in the API.

When does the launch price end?

On November 30, 2026. The new pricing starts December 1, 2026.

Does context caching make it cheaper?

Yes. Cached input is $0.10 per million tokens during the launch period and $0.20 after it, with implicit caching only.

Conclusion

The Gemini 4 Argon launch price is a deadline, not a permanent rate. Calculate your monthly token usage at the December prices before you commit, and treat the Vals Index and Gray Swan figures as Google's own claims.

Sources: Google, Introducing Gemini 4 Argon · Gemini API pricing