API price comparison · Updated
Gemini 4 Argon costs $2.00 per million input tokens and $10.00 per million output tokens; Gemini 3.1 Pro Preview costs $2.00 and $12.00. For an agent task (80,000 input tokens, 60,000 of them cached, and 6,000 output), Gemini 4 Argon costs $0.106 and Gemini 3.1 Pro Preview $0.124: Gemini 4 Argon costs 15% less. Gemini 4 Argon's price changes on Dec 1, 2026 to $4.00 input and $20.00 output per million tokens.
Gemini 4 Argon costs 8% less for this workload. Excludes cache writes, tools and taxes.
| Price | Gemini 4 Argon | Gemini 3.1 Pro Preview |
|---|---|---|
| Model ID | gemini-4-argon | gemini-3.1-pro-preview |
| Input | $2.00 | $2.00 |
| Cache read | $0.10 | $0.20 |
| Cache write | Storage billed per hour | Storage billed per hour |
| Output | $10.00 | $12.00 |
| Batch in / out | $1.00 / $5.00 | $1.00 / $6.00 |
| Long prompts | Same rate | Over 200,000: $4.00 / $18.00 |
| Scheduled change | From Dec 1, 2026: $4.00 / $20.00 | None announced |
| Status | Paid tier only | Preview |
Prices for each provider’s own API, from Google Gemini’s pricing page. The lower price in each row is highlighted. Ganivra uses these same rates to price Gemini 4 Argon and Gemini 3.1 Pro Preview calls.
Worked out from the prices above at standard rates, with no Batch discount. Long-prompt rates apply where a model has them.
| Request | Gemini 4 Argon | Gemini 3.1 Pro Preview | Per 1,000 requests | Difference |
|---|---|---|---|---|
| Chat reply3,000 input tokens, 500 output | $0.011 | $0.012 | $11.00 / $12.00 | Gemini 4 Argon costs 8% less |
| Document summary30,000 input tokens, 1,500 output | $0.075 | $0.078 | $75.00 / $78.00 | Gemini 4 Argon costs 4% less |
| Agent task80,000 input tokens (60,000 cached), 6,000 output | $0.106 | $0.124 | $106 / $124 | Gemini 4 Argon costs 15% less |
| Long document300,000 input tokens, 2,000 output | $0.620 | $1.24 | $620 / $1,236 | Gemini 4 Argon costs 50% less |
Ganivra prices every Gemini 4 Argon and Gemini 3.1 Pro Preview call you make and adds it up by customer, feature and workflow, next to what each customer pays. Switch a workflow and see what it did to each customer’s margin.
Per million tokens, Gemini 4 Argon costs $2.00 input and $10.00 output, and Gemini 3.1 Pro Preview $2.00 input and $12.00 output. For an agent task (80,000 input tokens, 60,000 of them cached, and 6,000 output), Gemini 4 Argon costs 15% less: $106 against $124 per 1,000 tasks.
$2.00 input and $10.00 output per million tokens on Google Gemini's API, with cached input at $0.10 and Batch at $1.00 input and $5.00 output. The rate is the same at any prompt length.
$2.00 input and $12.00 output per million tokens on Google Gemini's API, with cached input at $0.20 and Batch at $1.00 input and $6.00 output. Prompts over 200,000 tokens cost $4.00 input and $18.00 output.
For a 300,000 input tokens, 2,000 output request, Gemini 4 Argon costs $0.620 and Gemini 3.1 Pro Preview $1.24: Gemini 4 Argon costs 50% less. On Gemini 4 Argon, one rate at any prompt length; on Gemini 3.1 Pro Preview, prompts over 200,000 tokens cost $4.00 input and $18.00 output for the whole request.
Yes. On Dec 1, 2026, Gemini 4 Argon goes from $2.00 input and $10.00 output to $4.00 input and $20.00 output per million tokens. After the change, the agent task costs $0.212 on Gemini 4 Argon against $0.124 on Gemini 3.1 Pro Preview.
Record what each call actually used, then price the same usage on both models. Ganivra does this from your recorded calls: it shows what each customer, feature and workflow would cost on Gemini 4 Argon and on Gemini 3.1 Pro Preview, next to what each customer pays you.
Every model on one page: Gemini 4 Argon pricing · all model price comparisons · all supported models.