Use Case Recommendations

Code Generation

• Best: Claude 4
• Runner-up: GPT-5
• Budget: Gemini 2.5 Flash

Code Review

• Best: Claude 4
• Why: Deep understanding of code patterns

Bug Fixing

• Best: Claude 4
• Runner-up: GPT-4o

Writing / Content

• Best: GPT-5
• Runner-up: Claude 4

Data Analysis

• Best: GPT-5
• Why: Best Excel/Python code generation

Long Document Summary

• Best: Claude 4
• Why: 200K context, excellent comprehension

Agents / Tool Use

• Best: GPT-5
• Why: Best tool calling, function execution

Fast Prototyping

• Best: Gemini 2.5 Flash
• Why: Fastest, cheapest

Open Source / Self-Hosted

• Best: DeepSeek R1
• Runner-up: Qwen 2.5

Math / Science

• Best: OpenAI o1
• Why: Specialized reasoning

Customer Support

• Best: Gemini 2.5 Flash
• Why: Fast, cheap, good enough

API / Integrations

• Best: GPT-4o
• Why: Best balance

Quick Decision Tree

1. Need code? → Claude 4
2. Need speed + low cost? → Gemini Flash
3. Need best overall? → GPT-5
4. Need self-hosted? → DeepSeek R1