Gemini 2.5 Pro Cost Calculator
Estimate cost for Gemini 2.5 Pro — Google's flagship multimodal model. Input $1.25/1M, output $10/1M. 1M-token context window for very long prompts.
Gemini 2.5 Pro pricing (per 1M tokens)
Google's flagship Gemini model. 1M-token context, multimodal, competitive pricing.
| Model | Input | Output | Context |
|---|---|---|---|
| Gemini 2.5 Pro | $1.25 | $10.00 | 1M |
What you'll use this for
Forecasting AI spend is the difference between a sustainable feature and an unexpected invoice. Pre-flight every prompt.
Budget planning
Forecast monthly and annual costs based on expected call volume and prompt size.
Model selection
Compare model size variants side-by-side to pick the right cost/quality tradeoff.
Cost optimization
See how prompt caching, shorter outputs, and smaller models slash bills.
Pricing transparency
All rates visible up front — no surprises after the invoice arrives.
How to estimate GPT costs
Paste your prompt
Drop a representative prompt into the left editor. Tokens are estimated at ~4 chars/token.
Set expected output tokens
How long do you expect the response to be? Default 500 covers a paragraph or two.
Set calls per day
How often does this prompt run? 100 = trial-scale, 10000+ = production-scale.
Read the forecast
Per-call, per-day, per-month, per-year totals update live as you tweak inputs.
Frequently asked questions
We use ~4 chars/token, accurate to about ±20%. For exact counts use the model-specific token counter such as the OpenAI token counter.
OpenAI's public pricing pages as of 2026. Subject to change — always confirm at openai.com/pricing before signing contracts.
Yes. Completely free, no signup, runs entirely in your browser.
Toggle "Cached input" for a 90% input discount — this is approximate and varies by provider. OpenAI's prompt caching kicks in for repeated prefixes ≥ 1024 tokens.
Provider tokenizers can differ slightly from our estimate; system prompts and tool definitions also count toward input; rates change over time. Treat this as a planning tool, not a billing replica.
About Gemini 2.5 Pro API pricing
Gemini 2.5 Pro is Google's flagship — natively multimodal (text, image, audio, video) with a 1M-token context window. At $1.25/1M input it's about half the price of GPT-4o, and the giant context unlocks workflows that simply don't fit elsewhere.
When Gemini 2.5 Pro is the right pick
- You need to feed entire books, codebases, or hours of video into one prompt.
- Multimodal reasoning across image / audio / video.
- You want competitive quality at lower price than GPT-4o or Claude Opus.
Cost notes
- Output bills 8x input — keep responses bounded.
- Long-context calls can multiply input cost fast — every 1M tokens at $1.25 is one full context.
- Context caching available; check Google's pricing page for current discounts.