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Gemini 3.5 Flash vs Phi 4

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

Microsoft's compact research model with strong STEM reasoning.

6516K ctx$0.07/$0.14 per M#61/92
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
Smarter33%
Capability
CapabilityECI33%86.2
Reasoning & Knowledge
Graduate Science66%92.8%Factual Recall68.4%
Math
Math Problems—Competition Math595%95.6%Research Math39.0%
Coding
Real-World Coding79.3%
Agentic
Novel Reasoning72.1%
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper97%
Capability
CapabilityECI64.6
Reasoning & Knowledge
Graduate Science56.1%Factual Recall—
Math
Math Problems64.9%Competition Math13.8%Research Math—
Coding
Real-World Coding—
Agentic
Novel Reasoning—
Specs
1.0M
Context
66K
Max output
May 2026
Released
16K
Context
16K
Max output
Jan 2025
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
Input95%$0.07/M tokens
Output98%$0.14/M tokens
Chat with Gemini 3.5 FlashGo to model
Chat with Phi 4Go to model
Frequently Asked Questions: Gemini 3.5 Flash vs Phi 4▼

Which is better, Gemini 3.5 Flash or Phi 4?

▼

Based on the Capability Index, Gemini 3.5 Flash scores higher (86.2 vs 64.6). 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 Phi 4?

▼

Phi 4 has a lower blended cost. Gemini 3.5 Flash: $1.50 input / $9.00 output. Phi 4: $0.07 input / $0.14 output.

Which has a larger context window, Gemini 3.5 Flash or Phi 4?

▼

Gemini 3.5 Flash has a larger context window: Gemini 3.5 Flash supports 1M tokens vs Phi 4 at 16K tokens.

Do both Gemini 3.5 Flash and Phi 4 support vision?

▼

Gemini 3.5 Flash supports vision/image input, but Phi 4 does not.

What are the key differences between Gemini 3.5 Flash and Phi 4?

▼

Key differences: Gemini 3.5 Flash has a notably higher capability index (21.6 point gap); Phi 4 is significantly cheaper; only Gemini 3.5 Flash supports vision input; 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 Phi 4 for free on idapt.app to see which performs better for your specific needs.

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