GPT-5 vs Claude 4 vs Gemini 2: Head-to-Head Comparison

# GPT-5 vs Claude 4 vs Gemini 2: Head-to-Head Comparison

The AI arms race has a new chapter. We ran identical prompts through GPT-5, Claude 4, and Gemini 2 to see how they stack up.

Test 1: Complex Code Generation

**Task:** Build a REST API with authentication, rate limiting, and error handling.

| Model | Lines of Code | Bugs Found | Time | |-------|---------------|------------|------| | GPT-5 | 187 | 0 | 12s | | Claude 4 | 203 | 1 | 15s | | Gemini 2 | 165 | 2 | 18s |

**Winner:** GPT-5 — cleanest code, zero bugs

Test 2: Long-Form Writing

**Task:** Write a 2,000-word article on climate tech investments.

| Model | Word Count | Readability Score | Hallucinations | |-------|------------|-------------------|----------------| | Claude 4 | 2,047 | 8.2/10 | 0 | | GPT-5 | 1,892 | 7.8/10 | 1 | | Gemini 2 | 2,103 | 7.5/10 | 0 |

**Winner:** Claude 4 — most natural prose, best flow

Test 3: Document Analysis

**Task:** Summarize a 50-page financial report with key metrics.

| Model | Accuracy | Key Points Captured | Speed | |-------|----------|---------------------|-------| | Gemini 2 | 97% | 12/12 | 8s | | Claude 4 | 94% | 11/12 | 11s | | GPT-5 | 91% | 10/12 | 9s |

**Winner:** Gemini 2 — superior accuracy on long documents

The Verdict

There's no single winner. Each model excels in different areas:

• **GPT-5:** Code and technical tasks
• **Claude 4:** Writing and analysis
• **Gemini 2:** Long documents and research

Why Choose When You Can Have All Three?

ModelHub AI routes your request to the best model for the job automatically. Ask a coding question? GPT-5 handles it. Need a blog post? Claude 4 takes over. Analyzing a 100-page PDF? Gemini 2 steps in.

**One subscription. Best model every time.** That's the ModelHub advantage.