Verified 2026-10-07 · sourced from Google
Gemini 3.1 Pro Preview Token Calculator, Pricing & 100K/1M Cost
Check Google Gemini 3.1 Pro Preview pricing, estimate 100K and 1M token cost, and size a real API budget before you send a single request. Standard pricing is $2.00 per million input tokens and $12.00 per million output tokens with a 1M token context window.
Quick answer: Gemini 3.1 Pro Preview pricing per 1M tokens is $2.00 input and $12.00 output. Context window: 1,048,576 tokens · Cached input: $0.200 / 1M.
Best for searches like Gemini 3.1 Pro Preview token calculator, Gemini 3.1 Pro Preview pricing, Gemini 3.1 Pro Preview 100K tokens cost, Gemini 3.1 Pro Preview 1M token cost.
Reference rates: Preview · Developer API · ≤200K input
USD per million text tokens. Verified 2026-10-07 · Official source
| Mode / prompt size | Input | Cache read | Cache write | Output |
|---|---|---|---|---|
| Standard ≤200,000 input | $2 | $0.2 | Not estimated | $12 |
| Standard >200,000 input | $4 | $0.4 | Not estimated | $18 |
| Batch ≤200,000 input | $1 | $0.2 | Not estimated | $6 |
| Batch >200,000 input | $2 | $0.4 | Not estimated | $9 |
Cache storage: $4.5 per million tokens per hour, charged separately and excluded from the per-call estimate.
1,048,576 context tokens · max output 65,536. Local token counts are estimates; use the provider’s usage counts for an invoice estimate.
Google lists Gemini 3.1 Pro Preview with separate pricing for prompts above 200K tokens.
Batch mode halves input and output token prices while cache pricing remains listed at standard rates.
Developer API paid tier (not Vertex). Batch halves input/output, but cache reads remain $0.20/M up to 200K input and $0.40/M above 200K. Cache storage costs $4.50 per million token-hours and is separate. Output includes thinking tokens; tools cost extra.
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Context window
1,048,576 tokens
Input price
$2.00 / 1M
Output price
$12.00 / 1M
Cached input
$0.200 / 1M
Pricing modes and thresholds
Long-context pricing starts above 200,000 input tokens.
Usage scenarios
Compare standard and cached pricing (where available) across common workloads.
| Scenario | Tokens in | Tokens out | Total tokens | Standard cost | Cached cost |
|---|---|---|---|---|---|
Quick chat reply Single user question with a short assistant answer | 650 | 220 | 870 | $0.0039 | $0.0028 |
Coding assistant session Multi-turn pair programming exchange (≈6 turns) | 2,600 | 1,400 | 4,000 | $0.0220 | $0.0173 |
Knowledge base response Retrieval-augmented answer referencing multiple passages | 12,000 | 3,000 | 15,000 | $0.0600 | $0.0384 |
Near-max context run Large document processing approaching the 1M token limit | 983,040 | 65,536 | 1,048,576 | $5.11 | $1.57 |
Daily & monthly budgeting
Translate usage into predictable operating expenses across popular deployment sizes.
| Profile | Requests/day | Tokens/day | Daily cost | Monthly cost | Cached daily | Cached monthly |
|---|---|---|---|---|---|---|
| Team pilot | 25 | 75,000 | $0.400 | $12.00 | $0.310 | $9.30 |
| Product launch | 100 | 500,000 | $4.10 | $123.00 | $2.84 | $85.20 |
| Enterprise scale | 500 | 3,000,000 | $26.00 | $780.00 | $18.80 | $564.00 |
Pricing notes
- Google lists Gemini 3.1 Pro Preview with separate pricing for prompts above 200K tokens.
- Batch mode halves input and output token prices while cache pricing remains listed at standard rates.
- Developer API paid tier (not Vertex). Batch halves input/output, but cache reads remain $0.20/M up to 200K input and $0.40/M above 200K. Cache storage costs $4.50 per million token-hours and is separate. Output includes thinking tokens; tools cost extra.
Frequently asked questions
How much does Gemini 3.1 Pro Preview cost per 1,000 tokens?
At the published rates of $2.00 per million input tokens and $12.00 per million output tokens, a typical 1,000 token request (≈70% input, 30% output) costs about $0.0050.
Does Gemini 3.1 Pro Preview offer cached input discounts?
Gemini 3.1 Pro Preview drops input costs to $0.200 per million cached tokens. Using cached contexts, that same 1,000 token call totals $0.0037, a significant saving for chatbots and RAG systems.
What is the context window for Gemini 3.1 Pro Preview?
Gemini 3.1 Pro Preview supports up to 1,048,576 tokens (1M), allowing large prompts and retrieval-augmented payloads in a single call.
How fresh is the Gemini 3.1 Pro Preview pricing data?
Pricing is sourced from https://ai.google.dev/gemini-api/docs/pricing and was last verified on 2026-10-07. The calculator updates automatically when models.json is refreshed.