Google Gemini 1.5 Flash API Token Cost Calculator
Simulate high-speed multimodal application costs on Gemini 1.5 Flash ($0.075 prompt / $0.30 completion per 1M).
Parameters & Config
Pre-configured official API pricing for this specific model tier
Prompt payload size including system prompt, user prompt, and chat history
Generated output tokens returned by the model
Total API requests processed per day across all users
Cost per 1,000,000 incoming prompt tokens
Cost per 1,000,000 generated completion tokens
Estimated 30-day cloud billing based on current traffic and model selection
Average daily API infrastructure expenditure incurred
Key Metrics & Sub-Totals
3 itemsCalculation Summary & Unit Breakdown
| Metric | Calculated Value | Notes / Logic |
|---|---|---|
| Active Model Configuration | Gemini 1.5 Flash (Google Fast Legacy • $0.075 / $0.30) | - |
| Daily Request Volume | 20,000 | queries/day |
| Tokens per Request | 2,000 | Prompt: 1,500 / Output: 500 |
| Daily Token Burn | 40,000,000 | tokens/day |
| Monthly Total Tokens | 1,200,000,000 | 30-day projection |
| Daily Average Infrastructure Cost | $5.25 | USD |
| Monthly Prompt (Input) Token Cost | $67.50 | USD |
| Monthly Completion (Output) Token Cost | $90.00 | USD |
| Total Projected Monthly Cloud Bill | $157.50 | USD |
Overview & Methodology
Google Gemini 1.5 Flash is engineered for ultra-fast, high-volume tasks with a 1,000,000 token context window. At $0.075 per 1M input tokens and $0.30 per 1M output tokens, it is one of the cheapest frontier models in the world.
Mathematical Formulation
Single Cost = (Input / 1M × 0.075) + (Output / 1M × 0.30). Monthly = Single Cost × Daily Requests × 30.Optimization Best Practices
Google offers a 100% free tier for Gemini 1.5 Flash (up to 15 requests per minute and 1,500 requests per day) in Google AI Studio.
Use Gemini 1.5 Flash for high-frequency video transcript extraction and audio speech-to-text.
Context caching drops input costs further down to $0.01875/1M tokens.
Frequently Asked Questions
Q.How much does 100,000 requests cost on Gemini 1.5 Flash?
At 1.5k input / 500 output tokens, 100,000 calls cost $11.25 input + $15.00 output = $26.25 ($0.00026 per call).
Q.Is Gemini 1.5 Flash free to use?
Yes. Google provides a generous free tier of up to 15 RPM and 1,500 requests/day for prototyping.
Q.What is the context window for Gemini 1.5 Flash?
Gemini 1.5 Flash supports a 1,000,000 token context window.