What is Gemini's two-tier pricing?

Gemini 1.5 Pro charges a lower rate for prompts under 128K tokens and a higher rate for prompts over 128K tokens. For most document processing use cases, prompts stay under the 128K threshold and benefit from the lower rate.

Is Gemini 1.5 Flash good enough for production?

For classification, extraction, summarization, and translation tasks, yes. Flash performs comparably to Pro on structured tasks while being significantly cheaper. Use Pro for tasks requiring complex reasoning, nuanced creative writing, or strong instruction following.

Does Google offer a free tier?

Yes. The Gemini API free tier provides 1,500 requests per day with Gemini 1.5 Flash at no cost. Rate limits apply. The free tier is intended for development and testing; production applications should use the paid tier.

Estimate Gemini API Cost for a Document Pipeline

Google Gemini pricing has a tiered structure based on prompt length: requests under 128K tokens are priced at a lower rate than requests over 128K tokens for Gemini 1.5 Pro. This makes Gemini 1.5 Pro competitive for long-context processing even compared to Gemini 1.5 Flash for very long documents, since the per-token cost is the same in both pricing tiers. This example models a document processing pipeline and shows how prompt length affects total cost. Gemini 1.5 Flash is the most cost-effective model for high-volume processing of moderate-length documents. At $0.075 per million input tokens for prompts under 128K tokens, it is significantly cheaper than GPT-4o-mini and comparable to Claude 3.5 Haiku. For tasks that do not require the full capability of Pro — summarization, classification, extraction — Flash delivers excellent results at Flash prices. Google also offers a free tier with generous rate limits for testing and low-volume applications. The free tier uses Gemini 1.5 Flash and allows 1,500 requests per day at no cost. For production applications, the paid tier removes rate limits and adds SLA guarantees. Always test your pipeline on the free tier before committing to paid production usage.

Example

Pipeline: document classification and extraction
Model options: gemini-1.5-pro, gemini-1.5-flash
Documents per day: 2000
Average input tokens per document: 6500
Average output tokens per document: 400
Prompt length: under 128K threshold: yes

[ open in Gemini API Cost Calculator → ]

FAQ

What is Gemini's two-tier pricing?: Gemini 1.5 Pro charges a lower rate for prompts under 128K tokens and a higher rate for prompts over 128K tokens. For most document processing use cases, prompts stay under the 128K threshold and benefit from the lower rate.
Is Gemini 1.5 Flash good enough for production?: For classification, extraction, summarization, and translation tasks, yes. Flash performs comparably to Pro on structured tasks while being significantly cheaper. Use Pro for tasks requiring complex reasoning, nuanced creative writing, or strong instruction following.
Does Google offer a free tier?: Yes. The Gemini API free tier provides 1,500 requests per day with Gemini 1.5 Flash at no cost. Rate limits apply. The free tier is intended for development and testing; production applications should use the paid tier.

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