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Google
Google
vs
OpenAI
OpenAI

Gemini 1.5 Flash vs GPT-5.2-Codex

A detailed comparison of pricing, benchmarks, and capabilities

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Key Takeaways

Gemini 1.5 Flash wins:

  • Cheaper input tokens
  • Cheaper output tokens
  • Larger context window

GPT-5.2-Codex wins:

  • Faster response time
  • Higher intelligence benchmark
  • Better at coding
  • Has reasoning mode
Price Advantage
Gemini 1.5 Flash
Benchmark Advantage
GPT-5.2-Codex
Context Window
Gemini 1.5 Flash
Speed
GPT-5.2-Codex

Pricing Comparison

Benchmark Comparison

Context & Performance

Capabilities

Feature Comparison

FeatureGemini 1.5 FlashGPT-5.2-Codex
Vision (Image Input)
Tool/Function Calls
Reasoning Mode
Audio Input
Audio Output
PDF Input
Prompt Caching
Web Search

License & Release

PropertyGemini 1.5 FlashGPT-5.2-Codex
LicenseProprietaryProprietary
AuthorGoogleOpenAI
ReleasedUnknownJan 2026

Gemini 1.5 Flash Modalities

Input
Output

GPT-5.2-Codex Modalities

Input
textimage
Output
text

Frequently Asked Questions

Gemini 1.5 Flash has cheaper input pricing at $0.35/M tokens. Gemini 1.5 Flash has cheaper output pricing at $1.05/M tokens.
Gemini 1.5 Flash has a 1,048,576 token context window, while GPT-5.2-Codex has a 400,000 token context window.
Gemini 1.5 Flash supports vision. GPT-5.2-Codex supports vision.

Built by @aellman

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