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Gemini 3.5 Flash vs GPT 5

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 powerful general-purpose frontier model.

82400K ctx$1.25/$10.00 per M#20/92
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
Smarter5%Cheaper2%
Capability
CapabilityECI5%86.2
Reasoning & Knowledge
Graduate Science8%92.8%Expert-Level—Factual Recall35%68.4%
Math
Math Problems—Competition Math5%95.6%Research Math20%39.0%
Coding
Real-World Coding8%79.3%Code Editing—
Agentic
Terminal Tasks—Novel Reasoning631%72.1%Task Horizon—
Reasoning
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI81.8
Reasoning & Knowledge
Graduate Science86.2%Expert-Level25.3%Factual Recall50.6%
Math
Math Problems98.1%Competition Math91.4%Research Math32.4%
Coding
Real-World Coding73.6%Code Editing88.0%
Agentic
Terminal Tasks49.6%Novel Reasoning9.9%Task Horizon3.4h
Specs
1.0M
Context
66K
Max output
May 2026
Released
400K
Context
128K
Max output
Aug 2025
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$1.50/M tokens
Output10%$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
Input17%$1.25/M tokens
Output$10.00/M tokens
Cache read17%$0.13/M tokens
Web search29%$0.01/search
Chat with Gemini 3.5 FlashGo to model
Chat with GPT 5Go to model
Frequently Asked Questions: Gemini 3.5 Flash vs GPT 5▼

Which is better, Gemini 3.5 Flash or GPT 5?

▼

Based on the Capability Index, Gemini 3.5 Flash scores higher (86.2 vs 81.8). 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 5?

▼

Gemini 3.5 Flash has a lower blended cost. Gemini 3.5 Flash: $1.50 input / $9.00 output. GPT 5: $1.25 input / $10.00 output.

Which has a larger context window, Gemini 3.5 Flash or GPT 5?

▼

Gemini 3.5 Flash has a larger context window: Gemini 3.5 Flash supports 1M tokens vs GPT 5 at 400K tokens.

Do both Gemini 3.5 Flash and GPT 5 support vision?

▼

Yes, both Gemini 3.5 Flash and GPT 5 support vision/image input.

Which has better coding performance, Gemini 3.5 Flash or GPT 5?

▼

Gemini 3.5 Flash scores higher on SWE-bench Verified: Gemini 3.5 Flash resolves 79% vs GPT 5 at 74%.

What are the key differences between Gemini 3.5 Flash and GPT 5?

▼

Gemini 3.5 Flash and GPT 5 have similar overall capabilities. The main differences lie in pricing, context window size, and provider-specific strengths. Use this comparison page to review all metrics side by side.

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 5 for free on idapt.app to see which performs better for your specific needs.

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