Model Comparison

Gemini 3.5 Flash-Lite vs Phi 4 Reasoning PlusWhich is better in 2026?

Comparing Gemini 3.5 Flash-Lite and Phi 4 Reasoning Plus across benchmarks, pricing, and capabilities.

Verdict: Gemini 3.5 Flash-Lite vs Phi 4 Reasoning Plus — which is better?

Gemini 3.5 Flash-Lite (by Google) and Phi 4 Reasoning Plus (by Microsoft) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Choose Gemini 3.5 Flash-Lite if…

  • you want the most recent training data — it shipped Jul 2026

Choose Phi 4 Reasoning Plus if…

  • you need open weights you can self-host or fine-tune

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Gemini 3.5 Flash-Lite and Phi 4 Reasoning Plusdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Gemini 3.5 Flash-Lite specifies input context (1,048,576 tokens). Only Gemini 3.5 Flash-Lite specifies output context (65,536 tokens).

Google
Gemini 3.5 Flash-Lite
Input1,048,576 tokens
Output65,536 tokens
Microsoft
Phi 4 Reasoning Plus
Input- tokens
Output- tokens
Wed Jul 22 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Gemini 3.5 Flash-Lite supports multimodal inputs, whereas Phi 4 Reasoning Plus does not.

Gemini 3.5 Flash-Lite can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini 3.5 Flash-Lite

Text
Images
Audio
Video

Phi 4 Reasoning Plus

Text
Images
Audio
Video

License

Usage and distribution terms

Gemini 3.5 Flash-Lite is licensed under a proprietary license, while Phi 4 Reasoning Plus uses MIT.

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

Gemini 3.5 Flash-Lite

Proprietary

Closed source

Phi 4 Reasoning Plus

MIT

Open weights

Release Timeline

When each model was launched

Gemini 3.5 Flash-Lite was released on 2026-07-21, while Phi 4 Reasoning Plus was released on 2025-04-30.

Gemini 3.5 Flash-Lite is 15 months newer than Phi 4 Reasoning Plus.

Gemini 3.5 Flash-Lite

Jul 21, 2026

0 days ago

1.2yr newer
Phi 4 Reasoning Plus

Apr 30, 2025

1.2 years ago

Knowledge Cutoff

When training data ends

Gemini 3.5 Flash-Lite has a knowledge cutoff of 2026-03-31, while Phi 4 Reasoning Plus has a cutoff of 2025-03-01.

Gemini 3.5 Flash-Lite has more recent training data (up to 2026-03-31), making it potentially better informed about events through that date compared to Phi 4 Reasoning Plus (2025-03-01).

Gemini 3.5 Flash-Lite

Mar 2026

1 yr newer
Phi 4 Reasoning Plus

Mar 2025

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Google
Larger context window (1,048,576 tokens)
Supports multimodal inputs
Microsoft
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Gemini 3.5 Flash-Lite and Phi 4 Reasoning Plus side-by-side, then vote on the output you prefer.

Gemini 3.5 Flash-Lite
✓ Preferred
Phi 4 Reasoning Plus
Open in Playground
AI Model Comparison Table
Feature
Google
Gemini 3.5 Flash-Lite
Microsoft
Phi 4 Reasoning Plus

FAQ

Common questions about Gemini 3.5 Flash-Lite vs Phi 4 Reasoning Plus.

Which is better, Gemini 3.5 Flash-Lite or Phi 4 Reasoning Plus?

Gemini 3.5 Flash-Lite (Google) and Phi 4 Reasoning Plus (Microsoft) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Gemini 3.5 Flash-Lite compare to Phi 4 Reasoning Plus in benchmarks?

Gemini 3.5 Flash-Lite scores CharXiv-R: 76.5%, OSWorld-Verified: 74.0%, SWE-Bench Pro: 54.2%, Terminal-Bench 2.1: 54.0%, MLE-Bench: 39.2%. Phi 4 Reasoning Plus scores FlenQA: 97.9%, HumanEval+: 92.3%, IFEval: 84.9%, OmniMath: 81.9%, AIME 2024: 81.3%.

What are the context window sizes for Gemini 3.5 Flash-Lite and Phi 4 Reasoning Plus?

Gemini 3.5 Flash-Lite supports 1.0M tokens and Phi 4 Reasoning Plus supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 3.5 Flash-Lite and Phi 4 Reasoning Plus?

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

Who makes Gemini 3.5 Flash-Lite and Phi 4 Reasoning Plus?

Gemini 3.5 Flash-Lite is developed by Google and Phi 4 Reasoning Plus is developed by Microsoft.

Related comparisons