Claude Sonnet 4 vs Gemini 3 Flash Preview (Comparative Analysis)
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Comparative Analysis: Claude Sonnet 4 vs. Gemini 3 Flash Preview
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Overview
Claude Sonnet 4 was released 6 months before Gemini 3 Flash Preview.
 Claude Sonnet 4 |  Gemini 3 Flash Preview | |
|---|---|---|
Model Provider The organization behind this AI's development | Anthropic | 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 | 64K tokens | 65.5K tokens |
Release Date When this model first became publicly available | May 22, 2025 1 year ago May 22nd, 2025 | December 17, 2025 7 months ago December 17th, 2025 |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
Claude Sonnet 4 | Gemini 3 Flash Preview | |
|---|---|---|
Input Types Supported input formats | 🖼️Image📝Text📁File | 📝Text🖼️Image📁File🎵Audio🎬Video |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | Claude | Gemini |
Key Features Advanced capabilities | ✓Function CallingStructured Output✓Reasoning ModeContent Moderation | ✓Function Calling✓Structured Output✓Reasoning ModeContent Moderation |
Pricing
Claude Sonnet 4 is roughly 6.0x more expensive compared to Gemini 3 Flash Preview for input tokens and roughly 5.0x more expensive for output tokens.
| Claude Sonnet 4 | Gemini 3 Flash Preview | |
|---|---|---|
Input Token Cost Cost per million input tokens | $3.00 per million tokens | $0.50 per million tokens |
Output Token Cost Cost per million outut tokens | $15.00 per million tokens | $3.00 per million tokens |
Benchmarks
Compare relevant benchmarks between Claude Sonnet 4 and Gemini 3 Flash Preview.
| Claude Sonnet 4 | Gemini 3 Flash Preview | |
|---|---|---|
MMLU Measures knowledge across 57 subjects like law, math, history, and science | Benchmark not available. | Benchmark not available. |
MMMU Measures understanding of combined text and images across various domains | Benchmark not available. | Benchmark not available. |
HellaSwag Measures common sense reasoning by having models complete sentences about everyday situations | Benchmark not available. | Benchmark not available. |
At a Glance
Quick overview of what makes Claude Sonnet 4 and Gemini 3 Flash Preview unique.
Claude Sonnet 4 by Anthropic understands both text and images, can use external tools and APIs, offers advanced reasoning. It can handle standard conversations with its 1M token context window. Premium pricing at $3.00/M input and $15.00/M output tokens. Released May 22nd, 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
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Compare Gemini 3 Flash Preview with:
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Best models for coding and development
🎨Creative & Roleplay
Models optimized for creative writing
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💻Technology
Technical analysis and explanations
🔬Science
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