Gemini 2.5 Pro vs Gemini 3.1 Pro: Pricing Comparison
Compare pricing, capabilities, and costs for your LLM workloads.
Gemini 2.5 Pro
Pricing (per 1M tokens)
Input$1.25
Output$10.00
Cached Input$0.1250
Batch Input$0.6250
Batch Output$5.00
Context & Output
Context Window1M tokens
Max Output65.5K tokens
Capabilities
Categoryflagship
Multimodaltext + image + audio
Fine-tuningNo
StreamingYes
Gemini 3.1 Pro
Pricing (per 1M tokens)
Input$2.00
Output$12.00
Cached Input$0.2000
Batch Input$1.00
Batch Output$6.00
Context & Output
Context Window1M tokens
Max Output65.5K tokens
Capabilities
Categoryflagship
Multimodaltext + image + audio
Fine-tuningNo
StreamingYes
Quick Verdict
Cheaper Input Price
Gemini 2.5 Pro
37.5% cheaper
Cheaper Output Price
Gemini 2.5 Pro
16.7% cheaper
Larger Context Window
Gemini 3.1 Pro
+0 tokens
Cost Comparison
Sample workload: 1,000,000 input tokens + 1,000,000 output tokens
Gemini 2.5 Pro
$11.25
$1.25/1M input + $10.00/1M output
Gemini 3.1 Pro
$14.00
$2.00/1M input + $12.00/1M output
Gemini 2.5 Pro is 19.6% cheaper for this workload.
Frequently Asked Questions
Which is cheaper, Gemini 2.5 Pro or Gemini 3.1 Pro?
For input tokens, Gemini 2.5 Pro is cheaper at $1.25 per 1M tokens. For output tokens, Gemini 2.5 Pro is cheaper at $10.00 per 1M tokens. The overall cost depends on your workload's input/output ratio.
What is the context window size of Gemini 2.5 Pro vs Gemini 3.1 Pro?
Gemini 2.5 Pro has a context window of 1M tokens, while Gemini 3.1 Pro has 1M tokens. Gemini 2.5 Pro supports a larger context window of 1M tokens, which is beneficial for processing longer documents.
How do Gemini 2.5 Pro and Gemini 3.1 Pro compare for batch processing?
Both models support batch processing with discounted rates. Gemini 2.5 Pro offers a better batch rate at $0.6250 per 1M input tokens. Batch processing is ideal for non-time-sensitive workloads where you can wait for processing.
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