Gemini 2.5 Flash vs Gemini 3.1 Pro
| Gemini 2.5 Flash | Gemini 3.1 Pro | |
|---|---|---|
| Provider | ||
| Context Window | 1,048,576 | 2,000,000 |
| Release Date | 2025-06-17 | — |
| Input Price | $0.30/ 1M tokens | $2.00/ 1M tokens |
| Output Price | $2.50/ 1M tokens | $12.00/ 1M tokens |
| Best for | fast inference · multimodal · high volume · edge tasks | complex reasoning · coding · long-context · multimodal |
Capabilities
| Gemini 2.5 Flash | Gemini 3.1 Pro | |
|---|---|---|
| Vision | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Coding | ✓ | ✓ |
| Audio | ✓ | ✓ |
| Tools | ✓ | ✓ |
| Long Context | ✓ | ✓ |
Ranking Comparison
| Gemini 2.5 Flash | Gemini 3.1 Pro | |
|---|---|---|
| Overall | 93.3 | 50 |
| Benchmark | 86.7 | 0 |
| Capability | 100 | 100 |
| Price Efficiency | 100 | 100 |
| Context | 100 | 100 |
Overall = Benchmark 50% + Capability 20% + Price Efficiency 20% + Context 10%.
Benchmark Comparison
| Gemini 2.5 Flash | Gemini 3.1 Pro | |
|---|---|---|
| Coding | — | — |
| Reasoning | — | — |
| Math | — | — |
| Vision | — | — |
Price History
Gemini 2.5 Flash
| Date | Input | Output |
|---|---|---|
| 2026-08-05 | $0.30 | $2.50 |
/ 1M tokens
Gemini 3.1 Pro
| Date | Input | Output |
|---|---|---|
| 2026-08-05 | $2.00 | $12.00 |
/ 1M tokens
Gemini 2.5 Flash
Fast, cost-effective Gemini model with strong multimodal capabilities.
Gemini 3.1 Pro
Google's newest flagship with a 2M context window and advanced reasoning (preview).
Frequently Asked Questions
Which model is better: Gemini 2.5 Flash or Gemini 3.1 Pro?
Based on overall scores, Gemini 2.5 Flash ranks higher (93.3 vs 50). See the comparison table for a full breakdown.
Which model is cheaper: Gemini 2.5 Flash or Gemini 3.1 Pro?
Gemini 2.5 Flash is cheaper: $0.3 vs $2 per 1M input tokens.
What are the capability differences between Gemini 2.5 Flash and Gemini 3.1 Pro?
Gemini 2.5 Flash and Gemini 3.1 Pro support the same set of capabilities.