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GPT-4 Turbo Preview vs Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image)

How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for GPT-4 Turbo Preview and Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image).

OpenAI

GPT-4 Turbo Preview

The preview GPT-4 model with improved instruction following, JSON mode, reproducible outputs, parallel function calling, and more. Training data: up to Dec 2023. **Note:** heavily rate limited by OpenAI while...

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Google

Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image)

Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) is Google's fastest, most cost-efficient Gemini image model, built for high-velocity developer pipelines and rapid-fire visual exploration. It delivers text-to-image generation...

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Technical Specifications

SpecificationGPT-4 Turbo PreviewNano Banana 2 Lite (Gemini 3.1 Flash Lite Image)
ProviderOpenAIGoogle
Context Window128,000 tokens65,536 tokens
Agent SuitabilityN/AN/A
Time to First Token (TTFT)N/AN/A
Deployment Modelmanaged apimanaged api
Production Stabilitystablestable
API AvailableYesYes
Released Date2024-01-252026-06-30

API Pricing Comparison

Input Price per Million Tokens

GPT-4 Turbo Preview

$10.00

Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image)

$0.25

Output Price per Million Tokens

GPT-4 Turbo Preview

$30.00

Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image)

$1.50

Want to test both models live?

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Benchmark Performance Metrics

Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.

GPT-4 Turbo Preview Quirks & Gotchas

No developer gotchas reported.

Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) Quirks & Gotchas

No developer gotchas reported.