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Gemini 3.5 Flash vs GPT 4o Mini

At a glance

Google's high-speed thinking model for agentic workflows, chat, and coding.

861.0M ctx$1.50/$9.00 per M#11/92

OpenAI's most advanced small model — fast and affordable.

61128K ctx$0.15/$0.60 per M#69/92
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Smarter42%
Capability
CapabilityECI42%86.2
Reasoning & Knowledge
Graduate Science146%92.8%Factual Recall68.4%
Math
Math Problems—Competition Math1276%95.6%Research Math39.0%
Coding
Real-World Coding79.3%Code Editing—
Agentic
Novel Reasoning72.1%
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper92%
Capability
CapabilityECI60.8
Reasoning & Knowledge
Graduate Science37.7%Factual Recall—
Math
Math Problems52.6%Competition Math6.9%Research Math—
Coding
Real-World Coding—Code Editing3.6%
Agentic
Novel Reasoning—
Specs
1.0M
Context
66K
Max output
May 2026
Released
128K
Context
16K
Max output
Jul 2024
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$1.50/M tokens
Output$9.00/M tokens
Reasoning$9.00/M tokens
Cache read$0.15/M tokens
Cache write$0.08/M tokens
Image input$1.50/M tokens
Audio input$3.00/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input90%$0.15/M tokens
Output93%$0.60/M tokens
Cache read50%$0.07/M tokens
Chat with Gemini 3.5 FlashGo to model
Chat with GPT 4o MiniGo to model
Frequently Asked Questions: Gemini 3.5 Flash vs GPT 4o Mini▼

Which is better, Gemini 3.5 Flash or GPT 4o Mini?

▼

Based on the Capability Index, Gemini 3.5 Flash scores higher (86.2 vs 60.8). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.

Which is cheaper, Gemini 3.5 Flash or GPT 4o Mini?

▼

GPT 4o Mini has a lower blended cost. Gemini 3.5 Flash: $1.50 input / $9.00 output. GPT 4o Mini: $0.15 input / $0.60 output.

Which has a larger context window, Gemini 3.5 Flash or GPT 4o Mini?

▼

Gemini 3.5 Flash has a larger context window: Gemini 3.5 Flash supports 1M tokens vs GPT 4o Mini at 128K tokens.

Do both Gemini 3.5 Flash and GPT 4o Mini support vision?

▼

Yes, both Gemini 3.5 Flash and GPT 4o Mini support vision/image input.

What are the key differences between Gemini 3.5 Flash and GPT 4o Mini?

▼

Key differences: Gemini 3.5 Flash has a notably higher capability index (25.4 point gap); GPT 4o Mini is significantly cheaper; only Gemini 3.5 Flash offers extended reasoning mode. Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Gemini 3.5 Flash and GPT 4o Mini for free on idapt.app to see which performs better for your specific needs.

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