Gemini 4 Argon and Pro API pricing · Updated
Gemini 4 Argon costs $2.00 per million input tokens and $10.00 per million output tokens on the Gemini API until November 30, 2026, then $4.00 and $20.00 from December 1. Gemini 3.1 Pro Preview costs $2.00 and $12.00, and Gemini 2.5 Pro $1.25 and $10.00, with higher rates for prompts over 200,000 tokens.
| Model | Input | Cache read | Output | Batch in / out | Status |
|---|---|---|---|---|---|
Gemini 4 Argongemini-4-argonFrom Dec 1, 2026: $4.00 in / $20.00 out | $2.00 | $0.10 | $10.00 | $1.00 / $5.00 | Current |
Gemini 3.1 Pro Previewgemini-3.1-pro-previewPrompts over 200,000 tokens: $4.00 in / $18.00 out | $2.00 | $0.20 | $12.00 | $1.00 / $6.00 | Available |
Gemini 2.5 Progemini-2.5-proPrompts over 200,000 tokens: $2.50 in / $15.00 out | $1.25 | $0.125 | $10.00 | $0.625 / $5.00 | Available |
Prices from Google Gemini’s pricing page and deprecation schedule, for Google Gemini’s own API. Ganivra uses these same rates to price Gemini 4 Argon and Pro calls. Upcoming changes across providers are on the price change and shutdown tracker.
Worked out from the prices above, at standard rates with no Batch discount.
| Request | Gemini 4 Argon | Gemini 3.1 Pro Preview | Per 1,000 on Gemini 4 Argon |
|---|---|---|---|
| Chat reply3,000 input tokens, 500 output | $0.011 | $0.012 | $11.00 |
| Document summary30,000 input tokens, 1,500 output | $0.075 | $0.078 | $75.00 |
| Agent task80,000 input tokens (60,000 cached), 6,000 output | $0.106 | $0.124 | $106 |
The same agent task (80,000 input tokens (60,000 cached), 6,000 output) on other models, per 1,000 requests. Quality differs between models, so test on your own prompts before switching.
| Model | Input / output per 1M | Agent task per 1,000 | vs Gemini 4 Argon |
|---|---|---|---|
| Gemini 3.8 Flash | $0.75 / $3.75 | $42.00 | −60% |
| Gemini 4 Argon | $2.00 / $10.00 | $106 | — |
| GPT-6.1 Sol | $2.00 / $10.00 | $106 | Same price |
| Claude Sonnet 5.5 | $2.00 / $10.00 | $106 | Same price |
| Claude Opus 5.5 | $4.00 / $20.00 | $212 | +100% |
| GPT-5.6 Sol | $4.00 / $20.00 | $224 | +111% |
To see what your own calls would cost on each of these, Ganivra reprices your recorded usage in model comparison.
Head-to-head price comparisons: Claude Sonnet 5.5 vs Gemini 4 Argon · Claude Opus 5.5 vs Gemini 4 Argon · GPT-6.1 Sol vs Gemini 4 Argon · GPT-6 Astra vs Gemini 4 Argon · Gemini 4 Argon vs Gemini 3.8 Flash · Gemini 4 Argon vs Gemini 3.1 Pro Preview · all comparisons.
Ganivra prices every Gemini 4 Argon and Pro call at these rates and adds it up by customer, feature and workflow, next to what each customer pays. You see who is profitable on Gemini 4 Argon and Pro and who isn’t.
$2.00 input and $10.00 output per million tokens until November 30, 2026, and $4.00 input and $20.00 output from December 1, 2026. Cached input costs $0.10 per million, rising to $0.20. Argon has one rate at any prompt length.
On December 1, 2026 every Argon price doubles. An agent task of 80,000 input tokens (60,000 cached) and 6,000 output goes from $0.106 to $0.212, or from $106 to $212 per 1,000 tasks. Calls before December 1 keep the old price.
Gemini 3.1 Pro Preview costs $2.00 input and $12.00 output per million tokens for prompts up to 200,000 tokens and $4.00 input and $18.00 output above that. It is a preview model, and its custom-tools endpoint costs the same.
$1.25 input and $10.00 output per million tokens for prompts up to 200,000 tokens and $2.50 input and $15.00 output above that. Grounding with Google Search on 2.5 Pro costs $35 per 1,000 grounded prompts after 1,500 free a day.
On Gemini 4 Argon, Batch and Flex cost $1.00 input and $5.00 output per million tokens until December 1 and $2.00 input and $10.00 output after. Priority costs 1.8×: $3.60 input and $18.00 output today. On the Pro models, Batch and Flex leave cache reads at the Standard rate.
Until December 1 it costs the same per token as GPT-6.1 Sol ($2.00 input and $10.00 output) and Claude Sonnet 5.5 ($2.00 input and $10.00 output). From December 1 it matches GPT-5.6 Sol ($4.00 input and $20.00 output) and Claude Opus 5.5 ($4.00 input and $20.00 output).
No. Gemini 4 Argon is available on the paid tier only. The prices on this page are Google's paid-tier prices for the Gemini Developer API.
Tag each Gemini call with the customer it served, then price it at the rate in effect that day and add it up by customer. Ganivra does this automatically, including Batch, Flex and Priority calls and the December 1 price change, and shows each customer's Gemini cost next to what they pay you.
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