Omibox

Gemini 1.5 ProVSDeepSeek V2.5

Gemini 1.5 Pro

Gemini 1.5 Pro

Gemini 1.5 Pro AI Model

Read Full Review
VS
DeepSeek V2.5

DeepSeek V2.5

DeepSeek V2.5 AI Model

Read Full Review

Select Your Role for Personalized Verdict

casual Verdict

These two are neck-and-neck industry leaders. [Gemini](/lab?model=google/gemini-flash-1.5) 1.5 Pro (Elo 1261) and [DeepSeek](/lab?model=deepseek/deepseek-chat) V2.5 (Elo 1250) are practically indistinguishable in daily tasks.
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

FeatureGemini 1.5 ProDeepSeek V2.5
ProviderGoogleDeepSeek
Release Date2024-042024-09
Context Window2000000128000
Pricing (Input)3.5 / per 1M tokens0.14 / per 1M tokens
Pricing (Output)10.5 / per 1M tokens0.28 / per 1M tokens
Pros
  • Unmatched 2 Million token context window
  • Deep integration with Google Workspace ecosystem
  • Excellent at retrieving needle-in-a-haystack data
  • Insanely cheap API pricing
  • Coding performance rivals Claude 3.5 Sonnet
  • Extremely efficient caching
Cons
  • Can suffer from hallucinations in short-context logic
  • More aggressive safety filters than competitors
  • Weaker in creative writing and English nuance
  • Server stability can be variable

Methodology

We compared Gemini 1.5 Pro and DeepSeek V2.5 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