Gemini 2.5 Pro is Google’s state-of-the-art AI model designed for advanced reasoning, coding, mathematics, and scientific tasks. It employs “thinking” capabilities, enabling it to reason through responses with enhanced accuracy...
Model details →Google: Gemini 2.5 Pro Preview 05-06 vs Google: Gemini 3.8 Flash
Google: Gemini 3.8 Flash wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
Gemini 3.8 Flash is Google's most intelligent Flash model with significant gains from 3.7 Flash across software engineering, agentic tasks, and multi-step reasoning.
Model details →Side-by-side comparison
| Capability | Google: Gemini 2.5 Pro Preview 05-06 | Google: Gemini 3.8 Flash | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1.0M | 1.0M | Tie |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $1.25 | $0.75 | 🏆 Google: Gemini 3.8 Flash |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $10.00 | $3.75 | 🏆 Google: Gemini 3.8 Flash |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | Yes | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is Google: Gemini 2.5 Pro Preview 05-06 better than Google: Gemini 3.8 Flash?
Google: Gemini 3.8 Flash wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Google: Gemini 2.5 Pro Preview 05-06 and Google: Gemini 3.8 Flash?
Input: $1.25 vs $0.75 per 1M tokens. Output: $10.00 vs $3.75 per 1M tokens.
What context windows do Google: Gemini 2.5 Pro Preview 05-06 and Google: Gemini 3.8 Flash support?
Google: Gemini 2.5 Pro Preview 05-06 supports up to 1.0M tokens. Google: Gemini 3.8 Flash supports up to 1.0M tokens.
Do both Google: Gemini 2.5 Pro Preview 05-06 and Google: Gemini 3.8 Flash support tool calling?
Google: Gemini 2.5 Pro Preview 05-06: yes. Google: Gemini 3.8 Flash: yes.