Gemini 3 Flash Preview vs Sonar Pro Search (Comparative Analysis)
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Comparative Analysis: Gemini 3 Flash Preview vs. Sonar Pro Search
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Overview
Sonar Pro Search was released 1 month before Gemini 3 Flash Preview.
 Gemini 3 Flash Preview |  Sonar Pro Search | |
|---|---|---|
Model Provider The organization behind this AI's development | Google | Perplexity |
Input Context Window Maximum input tokens this model can process at once | 1M tokens | 200K tokens |
Output Token Limit Maximum output tokens this model can generate at once | 65.5K tokens | 8K tokens |
Release Date When this model first became publicly available | December 17, 2025 7 months ago December 17th, 2025 | October 30, 2025 8 months ago October 30th, 2025 |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
Gemini 3 Flash Preview | Sonar Pro Search | |
|---|---|---|
Input Types Supported input formats | 📝Text🖼️Image📁File🎵Audio🎬Video | 📝Text🖼️Image |
Reasoning Controls Defaults and configurable reasoning effort | OptionalEffort: High, Medium, Low, MinimalDefault: Medium | Always enabled |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | Gemini | Other |
Key Features Advanced capabilities | ✓Function Calling✓Structured Output✓Reasoning ModeContent Moderation | Function Calling✓Structured Output✓Reasoning ModeContent Moderation |
Pricing
Gemini 3 Flash Preview is roughly 0.2x less expensive compared to Sonar Pro Search for input tokens and roughly 0.2x less expensive for output tokens.
| Gemini 3 Flash Preview | Sonar Pro Search | |
|---|---|---|
Input Token Cost Cost per million input tokens | $0.50 per million tokens | $3.00 per million tokens |
Output Token Cost Cost per million output tokens | $3.00 per million tokens | $15.00 per million tokens |
Web Search Cost Additional cost for each web search operation | $0.014 per search | $0.018 per search |
Cache Read Cost Cost to reuse cached input tokens | $0.05 per million tokens | Not specified |
Cache Write Cost Cost to write input tokens to the cache | $0.08 per million tokens | Not specified |
Reasoning Token Cost Cost for internal reasoning tokens | $3.00 per million tokens | Not specified |
Image Input Cost Additional cost for each image input | $0.0000005 per image | Not specified |
Audio Input Cost Additional cost for audio input | $0.000001 per unit | Not specified |
Audio Cache Cost Cost to reuse cached audio input tokens | $0.10 per million tokens | Not specified |
Benchmarks
Compare relevant benchmarks between Gemini 3 Flash Preview and Sonar Pro Search.
| Gemini 3 Flash Preview | Sonar Pro Search | |
|---|---|---|
Best Design Arena Score Highest human-preference Elo score across design arenas | 1,243 Elo (#36 in 3D (62.7% win rate)) | Benchmark not available. |
At a Glance
Quick overview of what makes Gemini 3 Flash Preview and Sonar Pro Search unique.
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.Sonar Pro Search by Perplexity understands both text and images, offers advanced reasoning, generates structured data. It can handle standard conversations with its 200K token context window. Premium pricing at $3.00/M input and $15.00/M output tokens. Released October 30th, 2025.Explore More Comparisons
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