Google AI · gemini-3.1-pro

Gemini 3.1 Pro pricing (October 2026)

Google AI lists Gemini 3.1 Pro at $2.00 per 1M input tokens and $12.00 per 1M output tokens.

On Crazyrouter the same model is $1.10 / $6.60 — 45% below list price.

That is $0.002 / $0.012 per 1K tokens. Gemini 3.1 Pro is the #25 cheapest of the 38 chat models we track, by input price. 2.7× the price of Gemini 3.8 Flash. Through Crazyrouter you save $0.90 on every 1M input tokens versus list.

Base-tier rates shown; longer requests can cost more. Monthly estimates assume every request stays in the first tier.

Call Gemini 3.1 Pro at $1.10 in / $6.60 out per 1M tokens. Same model, same API, no plan — pay per token.

Sign up → try this model with $2 Playground credit. For API calls, add funds and create an API key; Playground credit cannot pay for API calls.

Looking for the ChatGPT / Claude app subscription price? That is a separate consumer product sold by Google AI. This page is the developer API price per token.

Google AI · Token pricing tiers

USD / 1M tokens. Base-tier rates shown; longer requests can cost more. Monthly estimates assume every request stays in the first tier.

Input tokens per requestInputOutputCache readCache writeCache write (1h)
≤ 200,000$2.00$12.00$0.20——
> 200,000$4.00$18.00$0.40——

Gemini 3.1 Pro price by provider

USD per 1M tokens. Cloud prices are the base tier in the default region; the linked source is authoritative.

Base-tier rates shown; longer requests can cost more. Monthly estimates assume every request stays in the first tier.

ProviderInputCached inputOutputContextSource
Google AI$2.00$0.20$12.001.0MGoogle AI
AzureNo verified quote
AWS BedrockNo verified quote
Google Vertex AI$2.00$0.20$12.001.0MGoogle Vertex AI
OpenRouterNo verified quote
Crazyrouter$1.10$0.275$6.601.0Mcrazyrouter.com

per 1M tokens · Snapshot Oct 24, 2026

What Gemini 3.1 Pro costs per month

Three typical workloads, priced on each provider from the table above.

Base-tier rates shown; longer requests can cost more. Monthly estimates assume every request stays in the first tier.

WorkloadGoogle AIGoogle Vertex AICrazyrouter
Prototype: 10M in / 2M out$44.00$44.00$24.20
Product: 100M in / 20M out$440.00$440.00$242.00
Scale: 1B in / 200M out$4,400$4,400$2,420

Price changes

  • Mar 3, 2026 — OpenRouter started listing Gemini 3.1 Pro at $2.00 / $12.00 per 1M.
  • Feb 20, 2026 — Google Vertex AI started listing Gemini 3.1 Pro at $2.00 / $12.00 per 1M.
  • Feb 20, 2026 — Google AI started listing Gemini 3.1 Pro at $2.00 / $12.00 per 1M.

Alternatives to Gemini 3.1 Pro

Same-family models and cheaper options for similar tasks.

Gemini 3.1 Pro pricing FAQ

How much does Gemini 3.1 Pro cost?

Google AI charges $2.00 per 1M input tokens and $12.00 per 1M output tokens. Through Crazyrouter the same model is $1.10 / $6.60. Base-tier rates shown; longer requests can cost more. Monthly estimates assume every request stays in the first tier.

What is cached input pricing?

Tokens that repeat an earlier prompt prefix are billed at the cached rate ($0.20 per 1M when supported) instead of the full input price. Base-tier rates shown; longer requests can cost more. Monthly estimates assume every request stays in the first tier.

Is there a batch discount?

Yes. Google AI offers batch pricing at $1.00 in / $6.00 out per 1M tokens for asynchronous jobs. Base-tier rates shown; longer requests can cost more. Monthly estimates assume every request stays in the first tier.

Is Gemini 3.1 Pro cheaper on Azure, Bedrock or Vertex?

Cloud providers usually match the list price and add regional or provisioned tiers; see the table above for the base rate on each. Crazyrouter applies its discount on top of list. Base-tier rates shown; longer requests can cost more. Monthly estimates assume every request stays in the first tier.

Sources and method

Provider reference prices use LiteLLM data and maintained entries. Provider links are references, not proof of daily official verification. Snapshot: Oct 24, 2026. Crazyrouter rates come from our billing table; confirm current prices, region and terms with the provider before purchase.

Further reading