Last updated: April 5, 2026 · Reviewed by Daniel Ashford
GPT-4o vs Claude Haiku 4.5
Head-to-head across 6 dimensions · by Daniel Ashford
Summary
GPT-4o leads overall with an Index of 91.0 vs 85.5. GPT-4o wins on accuracy, reasoning, coding, creativity, instruction. Claude Haiku 4.5 wins on safety. On pricing, Claude Haiku 4.5 is more affordable.
❓ Frequently Asked Questions
Is GPT-4o better than Claude Haiku 4.5?
Based on the LLM Judge Index™, GPT-4o scores higher overall (91.0 vs 85.5). GPT-4o leads on accuracy, reasoning, coding, creativity, instruction, while Claude Haiku 4.5 leads on safety.
Which is cheaper, GPT-4o or Claude Haiku 4.5?
Claude Haiku 4.5 is more affordable at $0.8/M tokens.
Which is better for coding?
GPT-4o scores higher on coding (92 vs 82).
Which model is safer?
Claude Haiku 4.5 has a higher safety score (92 vs 91).