Gemini 1.5 Pro vs Gemini 2.5 Flash
| Gemini 1.5 Pro | Gemini 2.5 Flash | |
|---|---|---|
| Provider | ||
| Context Window | 2,000,000 | 1,048,576 |
| Release Date | 2024-02-15 | 2025-06-17 |
| Input Price | $1.25/ 1M tokens | $0.30/ 1M tokens |
| Output Price | $5.00/ 1M tokens | $2.50/ 1M tokens |
| Best for | multimodal · long-context analysis · chatbot · document processing | fast inference · multimodal · high volume · edge tasks |
Capabilities
| Gemini 1.5 Pro | Gemini 2.5 Flash | |
|---|---|---|
| Vision | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Coding | ✓ | ✓ |
| Audio | ✓ | ✓ |
| Tools | ✓ | ✓ |
| Long Context | ✓ | ✓ |
Ranking Comparison
| Gemini 1.5 Pro | Gemini 2.5 Flash | |
|---|---|---|
| Overall | 76.9 | 47.5 |
| Benchmark | 70.8 | 0 |
| Capability | 100 | 100 |
| Price Efficiency | 100 | 100 |
| Context | 100 | 100 |
Overall = Benchmark 50% + Capability 20% + Price Efficiency 20% + Context 10%.
Benchmark Comparison
| Gemini 1.5 Pro | Gemini 2.5 Flash | |
|---|---|---|
| Coding | — | — |
| Reasoning | — | — |
| Math | — | — |
| Vision | — | — |
Price History
Gemini 1.5 Pro
| Date | Input | Output |
|---|---|---|
| 2026-08-11 | $1.25 | $5.00 |
/ 1M tokens
Gemini 2.5 Flash
| Date | Input | Output |
|---|---|---|
| 2026-08-11 | $0.30 | $2.50 |
/ 1M tokens
Gemini 1.5 Pro
Google's long-context multimodal model supporting up to 2M tokens.
Gemini 2.5 Flash
Fast, cost-effective Gemini model with strong multimodal capabilities.
Gemini 1.5 Pro
Data Reliability
Benchmark · VerifiedOfficial · Verified
Data confidence: 90%
Gemini 2.5 Flash
Data Reliability
Benchmark · ExperimentalOfficial · Verified
Data confidence: 95%
Why compare these models?
These models are compared because:
- • Same capability category
Choose Gemini 1.5 Pro if:
- • Higher overall score
Choose Gemini 2.5 Flash if:
- • Lower input price
Frequently Asked Questions
Which model is better: Gemini 1.5 Pro or Gemini 2.5 Flash?
Based on overall scores, Gemini 1.5 Pro ranks higher (76.9 vs 47.5). See the comparison table for a full breakdown.
Which model is cheaper: Gemini 1.5 Pro or Gemini 2.5 Flash?
Gemini 2.5 Flash is cheaper: $0.3 vs $1.25 per 1M input tokens.
What are the capability differences between Gemini 1.5 Pro and Gemini 2.5 Flash?
Gemini 1.5 Pro and Gemini 2.5 Flash support the same set of capabilities.