Gemini 2.5 Pro
Gemini 2.5 Pro — Google's flagship model with a 2M token context window.
| Type | Price / 1M tokens | Notes |
|---|---|---|
| Input | $1.25 | Per 1M input tokens |
| Output | $10.00 | Per 1M output tokens |
| Cache read | $0.31 | Cached prefix read-back |
At $1.25/M input and $10/M output, Gemini 2.5 Pro offers frontier capability with the longest standard context window of any major model.
Best for
- Long-document analysis (entire codebases, books)
- Video understanding
- Tasks requiring deep contextual reasoning
- Multimodal workflows
Not ideal for
- Simple high-volume inference — Flash is 4× cheaper
- Workloads where Anthropic's ecosystem is required
Real cost scenarios
| Scenario | Est. monthly cost | Breakdown |
|---|---|---|
| Full codebase review — 500k token codebase | $3,750 | $625 input + $3,125 output per review at scale |
| Long-form document Q&A — 10k queries/day | $4,875 | 50k context per query |
Estimates with typical token distributions. Use the Prompt Cost Calculator for your exact workload.
How to cut costs on Gemini 2.5 Pro
- Use Gemini's context caching — charged per token-hour, effective for static documents queried multiple times.
- Route simple queries to Gemini 2.5 Flash — same 2M context at 15× lower price.
Calculate your Gemini 2.5 Pro costs
Other Google models
Compare Gemini 2.5 Pro
Frequently Asked Questions
What makes the 2M context window useful?
Most LLMs require chunking documents that don't fit in context, which loses cross-document relationships. With 2M tokens, you can load entire codebases (average production codebase: 200-500K tokens), full legal cases, or multi-book research corpora in a single context window without retrieval.
How does Google's context caching work vs Anthropic's?
Google charges per token-hour for cached content (ongoing storage cost), while Anthropic charges a write fee then a lower per-call read fee. For documents queried many times per hour: Google's approach can be cheaper. For documents with lower query frequency: Anthropic's model is simpler. Calculate based on your query frequency.
Pricing verified 2026-08-19 from Google official pricing. All prices in USD per 1M tokens. See methodology and price changelog.