Last updated: April 5, 2026 · Reviewed by Daniel Ashford

Gemini 2.5 Ultra vs GPT-4o

Head-to-head across 6 dimensions · by Daniel Ashford

DIMENSION
Gemini 2.5 Ultra
Google
GPT-4o
OpenAI
🎯 Accuracy95 👑91
🧠 Reasoning93 👑90
🛡️ Safety94 👑91
💻 Coding9192 👑
Creativity92 👑89
📋 Instruction9393
Overall Index™93.0 👑91.0
Try on Google AI →Try on OpenAI →

Summary

Gemini 2.5 Ultra leads overall with an Index of 93.0 vs 91.0. Gemini 2.5 Ultra wins on accuracy, reasoning, safety, creativity. GPT-4o wins on coding. On pricing, GPT-4o is more affordable.

❓ Frequently Asked Questions

Is Gemini 2.5 Ultra better than GPT-4o?

Based on the LLM Judge Index™, Gemini 2.5 Ultra scores higher overall (93.0 vs 91.0). Gemini 2.5 Ultra leads on accuracy, reasoning, safety, creativity, while GPT-4o leads on coding.

Which is cheaper, Gemini 2.5 Ultra or GPT-4o?

GPT-4o is more affordable at $2.5/M tokens.

Which is better for coding?

GPT-4o scores higher on coding (92 vs 91).

Which model is safer?

Gemini 2.5 Ultra has a higher safety score (94 vs 91).

Related Comparisons

Claude Opus 4 vs Gemini 2.5 UltraClaude Opus 4 vs GPT-4oGPT-5.3 Codex vs Gemini 2.5 UltraGPT-5.3 Codex vs GPT-4oGemini 2.5 Ultra vs Claude Sonnet 4Gemini 2.5 Ultra vs Llama 4 405B