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Gemini Token Calculator: Estimate Google Gemini 2.5 Pro & Flash API Costs

Calculate your per-request, daily, and monthly Google Gemini API bill across Gemini 2.5 Pro, Gemini 2.5 Flash, and Gemini 2.0 Flash-Lite.

Estimated Monthly Gemini API Cost
$307.50 / month

How to Estimate Your Monthly Bill With This Gemini Token Calculator

Use the free Gemini Token Calculator above to see what your monthly bill will look like before you scale up traffic. Just pick your plan or model tier and type in your expected usage—the calculator updates your cost breakdown right away.

Want to bring that monthly bill down to $0? Check our free startup credit guide or browse ready-to-use accounts in our Pre-Approved Credit Marketplace.

1. 2026 Pricing & Rate Table

Plan / Item 2026 Rate & Included Quota
Gemini 2.5 Pro (Up to 128K tokens)$1.25 / 1M input tokens · $10.00 / 1M output tokens
Gemini 2.5 Pro (Over 128K tokens)$2.50 / 1M input tokens · $15.00 / 1M output tokens
Gemini 2.5 Flash$0.15 / 1M input tokens · $0.60 / 1M output tokens
Gemini Context CachingSaves up to 75% on repeated long input prompts

2. Easy Ways to Lower Your Monthly Cost

  • Try to keep individual requests under 128,000 tokens so you stay on the standard 1x pricing tier.
  • Gemini 2.5 Flash costs a fraction of Gemini Pro and works great for chat, extraction, and high-volume tasks.
  • Use Google Cloud startup credits on Vertex AI to run Gemini models at $0 out of pocket.
  • Use Context Caching whenever users ask multiple questions about the same uploaded PDF, video, or codebase.

Frequently Asked Questions — Gemini Token Calculator

Why does Gemini API pricing change after 128,000 tokens?

Google prices Gemini models in two context tiers: prompts up to 128K tokens pay the standard base rate ($1.25/1M on Gemini 2.5 Pro), while prompts exceeding 128K tokens up to 2M tokens are billed at the long-context rate ($2.50/1M).

Can I use Google Cloud startup credits for Gemini API?

Yes. When you call Gemini models through Google Cloud Vertex AI, 100% of your token usage is deducted from your Google Cloud startup credit balance.

How many tokens is a 1-hour video or 100-page PDF in Gemini?

In Gemini 2.5, 1 second of video is roughly 258 tokens (~928,000 tokens per hour), and 1 page of PDF text/layout is roughly 258 to 500 tokens.

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