Gemini 3.1 Pro Pricing & Token Economics
Google's production frontier flagship with 2M native multimodal context, complex audio/video reasoning, and state-of-the-art benchmark results.
Normalized Token Pricing Matrix
Real-time input, completion, and cache rates normalized to $/1M tokens.
Cost for prompts, instructions, document retrieval, and system context sent into the model.
Cost for generated text, code, tool calls, and structured JSON responses returned by the model.
Massive 75% savings on repeated context, documents, and system instructions.
Standard industry benchmark assuming 75% prompt reads and 25% completion generation.
Gemini 3.1 Pro Monthly Bill Estimator
Estimated monthly costs across four standardized enterprise and developer workloads.
| Workload Scenario | Monthly Token Volume | Standard Bill | With Prompt Caching |
|---|---|---|---|
| Customer Support Chatbot 10M prompt tokens + 2.5M output tokens per month | 12.5M tokens (10M in / 2.5M out) | $25.00/mo | $18.44/mo -26% |
| Document Analysis & RAG 30M prompt tokens (PDFs/context) + 3M output summaries | 33.0M tokens (30M in / 3M out) | $52.50/mo | $32.81/mo -38% |
| Coding Agent / IDE Swarm 60M prompt tokens (repo context) + 15M code completions | 75.0M tokens (60M in / 15M out) | $150.00/mo | $110.63/mo -26% |
| Enterprise Agentic Workflow 120M prompt tokens (reasoning loops) + 30M output actions | 150.0M tokens (120M in / 30M out) | $300.00/mo | $221.25/mo -26% |
Need custom token inputs or prompt volumes?
Use our interactive multi-model token calculator to test exact prompt and completion sliders.
Architecture & Capabilities
Technical parameters, supported modalities, and optimal developer use cases.
🎯 Recommended Use Cases
Massive 2M token codebase analysis, hour-long video reasoning, complex multi-document synthesis
Supported Modalities
📐 Context & Output Limits
- Maximum Context Window: 2,097,152 tokens (2.1M)
- Maximum Output Length: 65,536 tokens
- Speed / Latency Tier: Fast
- Official Provider: Google Cloud / AI Studio
Frequently Asked Questions
Everything you need to know about Gemini 3.1 Pro API pricing and token calculations.
How much does Gemini 3.1 Pro cost per 1M tokens?
Gemini 3.1 Pro charges $1.25 per 1M input tokens and $5.00 per 1M output tokens. For standard balanced workloads (3:1 input:output ratio), the effective blended rate is $2.188/1M tokens.
Does Gemini 3.1 Pro support prompt caching?
Yes. Cached prompt reads are billed at $0.3125 per 1M tokens, saving you up to 75% on repeated context, RAG documents, and system instructions.
What is Gemini 3.1 Pro's maximum context window?
Gemini 3.1 Pro supports up to 2,097,152 tokens (2.1M) in its context window, allowing you to ingest large files and multi-turn chat history with up to 65,536 tokens generated per response.
How does Gemini 3.1 Pro compare to other models?
With a CostRatio rating of A+, Gemini 3.1 Pro provides competitive token economics for frontier flagship tasks. Review the peer comparison table above to compare input and completion rates directly against alternative models.
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