Model Comparison

Gemini 1.5 Flash 8B vs Phi 4

Phi 4 significantly outperforms across most benchmarks. Phi 4 is 1.5x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Gemini 1.5 Flash 8B outperforms in 0 benchmarks, while Phi 4 is better at 3 benchmarks (GPQA, MATH, MMLU-Pro).

Phi 4 significantly outperforms across most benchmarks.

Sat May 02 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Phi 4 costs less

For input processing, Gemini 1.5 Flash 8B ($0.07/1M tokens) costs the same as Phi 4 ($0.07/1M tokens).

For output processing, Gemini 1.5 Flash 8B ($0.30/1M tokens) is 2.1x more expensive than Phi 4 ($0.14/1M tokens).

In conclusion, Gemini 1.5 Flash 8B is more expensive than Phi 4.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Sat May 02 2026 • llm-stats.com
Google
Gemini 1.5 Flash 8B
Input tokens$0.07
Output tokens$0.30
Best providerGoogle
Microsoft
Phi 4
Input tokens$0.07
Output tokens$0.14
Best providerDeepinfra
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Model Size

Parameter count comparison

6.7B diff

Phi 4 has 6.7B more parameters than Gemini 1.5 Flash 8B, making it 83.8% larger.

Google
Gemini 1.5 Flash 8B
8.0Bparameters
Microsoft
Phi 4
14.7Bparameters
8.0B
Gemini 1.5 Flash 8B
14.7B
Phi 4

Context Window

Maximum input and output token capacity

Gemini 1.5 Flash 8B accepts 1,048,576 input tokens compared to Phi 4's 16,000 tokens. Phi 4 can generate longer responses up to 16,000 tokens, while Gemini 1.5 Flash 8B is limited to 8,192 tokens.

Google
Gemini 1.5 Flash 8B
Input1,048,576 tokens
Output8,192 tokens
Microsoft
Phi 4
Input16,000 tokens
Output16,000 tokens
Sat May 02 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Gemini 1.5 Flash 8B supports multimodal inputs, whereas Phi 4 does not.

Gemini 1.5 Flash 8B can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini 1.5 Flash 8B

Text
Images
Audio
Video

Phi 4

Text
Images
Audio
Video

License

Usage and distribution terms

Gemini 1.5 Flash 8B is licensed under a proprietary license, while Phi 4 uses MIT.

License differences may affect how you can use these models in commercial or open-source projects.

Gemini 1.5 Flash 8B

Proprietary

Closed source

Phi 4

MIT

Open weights

Release Timeline

When each model was launched

Gemini 1.5 Flash 8B was released on 2024-03-15, while Phi 4 was released on 2024-12-12.

Phi 4 is 9 months newer than Gemini 1.5 Flash 8B.

Gemini 1.5 Flash 8B

Mar 15, 2024

2.1 years ago

Phi 4

Dec 12, 2024

1.4 years ago

9mo newer

Knowledge Cutoff

When training data ends

Gemini 1.5 Flash 8B has a knowledge cutoff of 2024-10-01, while Phi 4 has a cutoff of 2024-06-01.

Gemini 1.5 Flash 8B has more recent training data (up to 2024-10-01), making it potentially better informed about events through that date compared to Phi 4 (2024-06-01).

Gemini 1.5 Flash 8B

Oct 2024

4 mo newer
Phi 4

Jun 2024

Provider Availability

Gemini 1.5 Flash 8B is available from Google. Phi 4 is available from DeepInfra.

Gemini 1.5 Flash 8B

google logo
Google
Input Price:Input: $0.07/1MOutput Price:Output: $0.30/1M

Phi 4

deepinfra logo
Deepinfra
Input Price:Input: $0.07/1MOutput Price:Output: $0.14/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Google
Larger context window (1,048,576 tokens)
Supports multimodal inputs
Microsoft
Less expensive output tokens
Has open weights
Higher GPQA score (56.1% vs 38.4%)
Higher MATH score (80.4% vs 58.7%)
Higher MMLU-Pro score (70.4% vs 58.7%)
GoogleGemini 1.5 Flash 8B
MicrosoftPhi 4
Compare in Playground

Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 1.5 Flash 8B
Microsoft
Phi 4

FAQ

Common questions about Gemini 1.5 Flash 8B vs Phi 4.

Which is better, Gemini 1.5 Flash 8B or Phi 4?

Phi 4 significantly outperforms across most benchmarks. Gemini 1.5 Flash 8B is made by Google and Phi 4 is made by Microsoft. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 1.5 Flash 8B compare to Phi 4 in benchmarks?

Gemini 1.5 Flash 8B scores XSTest: 92.6%, FLEURS: 86.4%, Natural2Code: 75.5%, WMT23: 72.6%, Video-MME: 66.2%. Phi 4 scores MMLU: 84.8%, HumanEval+: 82.8%, HumanEval: 82.6%, MGSM: 80.6%, MATH: 80.4%.

Is Gemini 1.5 Flash 8B cheaper than Phi 4?

Both models cost $0.07 per million input tokens.

What are the context window sizes for Gemini 1.5 Flash 8B and Phi 4?

Gemini 1.5 Flash 8B supports 1.0M tokens and Phi 4 supports 16K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 1.5 Flash 8B and Phi 4?

Key differences include context window (1.0M vs 16K), multimodal support (yes vs no), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 1.5 Flash 8B and Phi 4?

Gemini 1.5 Flash 8B is developed by Google and Phi 4 is developed by Microsoft.