Gemini 2.5 Pro vs Gemini 3.1 Pro: API Price & Benchmark Comparison (INR)
Side-by-side pricing
| Gemini 2.5 Pro | Gemini 3.1 Pro | |
|---|---|---|
| Input price / 1M tokens | ₹128.96 | ₹206.33 |
| Output price / 1M tokens | ₹1,032 | ₹1,238 |
| Context window | 1,048,576 | 1,048,576 |
| Provider |
Velona effective INR prices, refreshed every 6 hours (last: 2026-07-28T17:32:59Z).
When to pick which
Gemini 3.1 Pro is the newer frontier model at $2/$12 per million versus 2.5 Pro's $1.25/$10, roughly 60% more on input, with the same 1M-token context window. The 3.1 generation reasons noticeably better on hard coding, maths, and multimodal tasks. But 3.1 Pro is still a preview: expect occasional behavioural changes and less production stability. Use 2.5 Pro for stable, cost-sensitive production workloads where it is already good enough. Use 3.1 Pro when task difficulty is the bottleneck and you can tolerate preview-stage churn for frontier quality.
Benchmarks
Gemini 2.5 Pro
Benchmarks
Independent scores from Artificial Analysis.
Gemini 3.1 Pro
Benchmarks
Independent scores from Artificial Analysis.
Cost calculator for both models
Frequently asked questions
Which is cheaper: Gemini 2.5 Pro or Gemini 3.1 Pro?
On input tokens, Gemini 2.5 Pro costs ₹128.96/1M and Gemini 3.1 Pro costs ₹206.33/1M through Velona. Output tokens: ₹1,032 vs ₹1,238 per 1M.
Can I switch between Gemini 2.5 Pro and Gemini 3.1 Pro without changing code?
Yes. Both are behind Velona's single gateway API. Change the model id in your request body and everything else stays the same, including your INR wallet.
Are these prices current?
Prices are regenerated every 6 hours from live provider pricing and the current USD→INR rate, so the figures on this page track what you'd actually be billed.
Velona is India's INR-native AI API gateway with 300+ models behind one API key, UPI top-up from ₹10, no foreign card needed.