Omibox

GPT-4oVSGemini 1.5 Pro

GPT-4o

GPT-4o

GPT-4o AI Model

Read Full Review
VS
Gemini 1.5 Pro

Gemini 1.5 Pro

Gemini 1.5 Pro AI Model

Read Full Review

Select Your Role for Personalized Verdict

casual Verdict

Overall, [GPT-4o](/lab?model=openai/gpt-4o) is the current industry leader (Elo: 1287). It generally provides more accurate and faster responses than [Gemini](/lab?model=google/gemini-flash-1.5) 1.5 Pro.
Data Verified from Authority Sources

Benchmarks including **LMSYS Chatbot Arena Elo** and **HumanEval Pass@1** are sourced from public leaderboards as of **2025/2026**. These metrics are indicative and may change as models are updated by providers.

LMSYS Leaderboard HumanEval Benchmark

Scores based on normalized benchmarks (0-100 scale)

Feature Comparison

FeatureGPT-4oGemini 1.5 Pro
ProviderOpenAIGoogle
Release Date2024-052024-04
Context Window1280002000000
Pricing (Input)5 / per 1M tokens3.5 / per 1M tokens
Pricing (Output)15 / per 1M tokens10.5 / per 1M tokens
Pros
  • Industry-leading multimodal capabilities (Audio/Vision)
  • Extremely fast inference speed compared to GPT-4 Turbo
  • Native capability to understand emotion in voice
  • Unmatched 2 Million token context window
  • Deep integration with Google Workspace ecosystem
  • Excellent at retrieving needle-in-a-haystack data
Cons
  • Can be 'lazy' in coding tasks requiring complex scaffolding
  • Strict safety filters can trigger false refusals
  • Can suffer from hallucinations in short-context logic
  • More aggressive safety filters than competitors

Methodology

We compared GPT-4o and Gemini 1.5 Pro based on real-world usage tests, official technical benchmarks, and community feedback. Our scoring system evaluates speed, reasoning capabilities (MMLU benchmarks), and coding proficiency.

Last updated: 1/17/2026