Google launches Gemini Decisions API, reporting nearly 5x lower benchmark costs

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Need classification scores without generating an answer? Gemini Decisions API scores candidate options in one forward pass and is available through the Gemini API in Google AI Studio, with a no-cost tier for prototyping.

Here's what you get:

• Input costs $0.10 per million tokens, with $0 output-token charges. Shared input is billed once per request, while question instructions and criteria add token costs.
• Responses include probabilities and confidence scores. Google reports 150-250 ms end-to-end latency.
• Requests accept text, images, audio, video, and PDFs, with up to 1,000 questions and 256K input tokens.
• Google says the API is nearly five times cheaper than Gemini 3.5 Flash-Lite with the Interactions API across its shared benchmark suite.

One catch: The nearly flat latency result covers up to 100 questions and 16K-token contexts. Google Cloud support is coming soon.

Try it: Get an API key in Google AI Studio and use gemini-decision-1 with the Decisions API.

Sources: blog.google