Gemini 2.5 Pro vs Gemini 3 Flash Preview (Comparative Analysis)
Loading comparison form...
Comparative Analysis: Gemini 2.5 Pro vs. Gemini 3 Flash Preview
Want to try out these models side by side?Try Magica for free
Overview
Gemini 2.5 Pro was released 6 months before Gemini 3 Flash Preview.
 Gemini 2.5 Pro | Gemini 3 Flash Preview | |
|---|---|---|
Model Provider The organization behind this AI's development | Google | Google |
Input Context Window Maximum input tokens this model can process at once | 1M tokens | 1M tokens |
Output Token Limit Maximum output tokens this model can generate at once | 65.5K tokens | 65.5K tokens |
Release Date When this model first became publicly available | June 17, 2025 1 year ago June 17th, 2025 | December 17, 2025 7 months ago December 17th, 2025 |
Knowledge Cutoff Latest training-data date reported by the provider | January 31, 2025 | Not reported |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
Gemini 2.5 Pro | Gemini 3 Flash Preview | |
|---|---|---|
Input Types Supported input formats | 📝Text🖼️Image📁File🎵Audio🎬Video | 📝Text🖼️Image📁File🎵Audio🎬Video |
Reasoning Controls Defaults and configurable reasoning effort | Always enabled | OptionalEffort: High, Medium, Low, MinimalDefault: Medium |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | Gemini | Gemini |
Key Features Advanced capabilities | ✓Function Calling✓Structured Output✓Reasoning ModeContent Moderation | ✓Function Calling✓Structured Output✓Reasoning ModeContent Moderation |
Pricing
Gemini 2.5 Pro is roughly 2.5x more expensive compared to Gemini 3 Flash Preview for input tokens and roughly 3.3x more expensive for output tokens.
| Gemini 2.5 Pro | Gemini 3 Flash Preview | |
|---|---|---|
Short Context Pricing Base rates before a long-context threshold applies | ||
Input Token Cost Cost per million input tokens | $1.25 per million tokens | $0.50 per million tokens |
Output Token Cost Cost per million output tokens | $10.00 per million tokens | $3.00 per million tokens |
Web Search Cost Additional cost for each web search operation | $0.014 per search | $0.014 per search |
Cache Read Cost Cost to reuse cached input tokens | $0.13 per million tokens | $0.05 per million tokens |
Cache Write Cost Cost to write input tokens to the cache | $0.38 per million tokens | $0.08 per million tokens |
Reasoning Token Cost Cost for internal reasoning tokens | $10.00 per million tokens | $3.00 per million tokens |
Image Input Cost Additional cost for each image input | $0.00000125 per image | $0.0000005 per image |
Audio Input Cost Additional cost for audio input | $0.00000125 per unit | $0.000001 per unit |
Audio Cache Cost Cost to reuse cached audio input tokens | $0.13 per million tokens | $0.10 per million tokens |
Long Context Pricing Rates for prompts with 200,000 or more tokens | ||
Input Token Cost Long-context input cost per million tokens | $2.50 per million tokens | Not specified |
Output Token Cost Long-context output cost per million tokens | $15.00 per million tokens | Not specified |
Cache Read Cost Long-context cache read cost per million tokens | $0.25 per million tokens | Not specified |
Benchmarks
Compare relevant benchmarks between Gemini 2.5 Pro and Gemini 3 Flash Preview.
| Gemini 2.5 Pro | Gemini 3 Flash Preview | |
|---|---|---|
Intelligence Index Overall model quality across independent evaluations | 25.8 (Artificial Analysis index; higher is better) | Benchmark not available. |
Coding Index Programming performance across independent evaluations | 33.3 (Artificial Analysis index; higher is better) | Benchmark not available. |
Agentic Index Ability to complete multi-step agentic tasks | 7.1 (Artificial Analysis index; higher is better) | Benchmark not available. |
Best Design Arena Score Highest human-preference Elo score across design arenas | 1,279 Elo (#19 in Data Viz (71.8% win rate)) | 1,241 Elo (#36 in 3D (62.7% win rate)) |
At a Glance
Quick overview of what makes Gemini 2.5 Pro and Gemini 3 Flash Preview unique.
Gemini 2.5 Pro by Google understands both text and images, handles audio, analyzes video, can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 1M token context window. Reasonably priced at $1.25/M input and $10.00/M output tokens. Released June 17th, 2025.Gemini 3 Flash Preview by Google understands both text and images, handles audio, analyzes video, can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 1M token context window. Reasonably priced at $0.50/M input and $3.00/M output tokens. Released December 17th, 2025.Explore More Comparisons
Compare your models with top performers across different categories
Compare Gemini 2.5 Pro with:
🚀Programming
Best models for coding and development
🎨Creative & Roleplay
Models optimized for creative writing
📢Marketing
Content creation and marketing tasks
💻Technology
Technical analysis and explanations
🔬Science
Scientific research and analysis
🌐Translation
Multilingual translation tasks
Compare Gemini 3 Flash Preview with:
🚀Programming
Best models for coding and development
🎨Creative & Roleplay
Models optimized for creative writing
📢Marketing
Content creation and marketing tasks
💻Technology
Technical analysis and explanations
🔬Science
Scientific research and analysis
🌐Translation
Multilingual translation tasks