LLM PricesModelsChangelog
Prices in USD per 1M tokens, text only. Each price shows where it came from and when it was last verified. Prices marked unverified come from models.dev (community-maintained) until we read them from the provider directly.
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Gemini 3.1 Pro Preview Custom Tools

Same model, served by 2 providers.

googleClosed1M contextReleased 2026-02-19google/gemini-3.1-pro-preview-customtools

Providers

Show flex / batch / priority tiersFull precision only
ProviderTheir model idServingInputOutputCached inBlended 3:1Source
Google Gemini API
Original creator
gemini-3.1-pro-preview-customtools
standardQuantization not disclosed
$2.0$12.0$0.20$4.5
Unverified (via models.dev)
Verified 5h ago · Changed 5h ago
More prices
  • cache read (prompts > 200k): $0.40
  • input (prompts > 200k): $4.0
  • output (prompts > 200k): $18.0
Google Vertex AI
gemini-3.1-pro-preview-customtools
standardQuantization not disclosed
$2.0$12.0$0.20$4.5
Unverified (via models.dev)
Verified 5h ago · Changed 5h ago
More prices
  • cache read (prompts > 200k): $0.40
  • input (prompts > 200k): $4.0
  • output (prompts > 200k): $18.0

Same weights don't always mean identical outputs: quantization, context limits and serving stacks can change quality, especially for tool calling. Prices are USD per 1M tokens; hyperscaler prices are for the reference region shown.

Monthly cost estimate

Google Gemini API $440/mo
Google Vertex AI $440/mo

Cache hits use each provider's cached-input price where it has one. Cache write costs aren't included.