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Gemini 2.5 Flash-Lite vs Phi 4 Reasoning Plus

Gemini 2.5 Flash-Lite and Phi 4 Reasoning Plus are closely matched at 10.6 and 15.2 on the LLM Stats Score.

Google · Microsoft · Updated for 2026

Which is better?

Gemini 2.5 Flash-Lite and Phi 4 Reasoning Plus are closely matched on the overall LLM Stats Score at 10.6 and 15.2.

In the 3 individual benchmarks reported for both models, Phi 4 Reasoning Plus wins 3; this is a narrower head-to-head signal than the composite indexes.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Gemini 2.5 Flash-Lite

  • you want the most recent training data — it shipped Jun 2025

Choose Phi 4 Reasoning Plus

  • you value its reported benchmark strengths — it wins 3 of 3 exact shared results

At a glance

The differences that matter most.

Gemini 2.5 Flash-Lite
Google
Phi 4 Reasoning Plus
Microsoft
Core performance indexes
LLM Stats Score
10.6
#254
15.2
#220
Reasoning
11.1
#248
15.5
#214
Coding
-2.5
#243
5.8
#189
Cost, coverage & limits
Benchmark wins
0 of 3
3 of 3
Input price
$0.10 / M
— / M
Output price
$0.40 / M
— / M
Context window
1,048,576
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Gemini 2.5 Flash-Lite
Phi 4 Reasoning Plus
Math
4.2#277
18.3#174
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

13 reported for Gemini 2.5 Flash-Lite · 11 for Phi 4 Reasoning Plus

3 shared

Gemini 2.5 Flash-Lite outperforms in 0 benchmarks, while Phi 4 Reasoning Plus is better at 3 benchmarks (AIME 2025, GPQA, LiveCodeBench).

Phi 4 Reasoning Plus significantly outperforms across most benchmarks.

Tue Sep 08 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Gemini 2.5 Flash-Lite specifies input context (1,048,576 tokens). Only Gemini 2.5 Flash-Lite specifies output context (65,536 tokens).

Google
Gemini 2.5 Flash-Lite
Input1,048,576 tokens
Output65,536 tokens
Microsoft
Phi 4 Reasoning Plus
Input- tokens
Output- tokens
Tue Sep 08 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Gemini 2.5 Flash-Lite supports multimodal inputs, whereas Phi 4 Reasoning Plus does not.

Gemini 2.5 Flash-Lite can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini 2.5 Flash-Lite

Text
Images
Audio
Video

Phi 4 Reasoning Plus

Text
Images
Audio
Video

License

Usage and distribution terms

Gemini 2.5 Flash-Lite is licensed under Creative Commons Attribution 4.0 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 2.5 Flash-Lite

Creative Commons Attribution 4.0 License

Open weights

Phi 4 Reasoning Plus

MIT

Open weights

Release Timeline

When each model was launched

Gemini 2.5 Flash-Lite was released on 2025-06-17, while Phi 4 Reasoning Plus was released on 2025-04-30.

Gemini 2.5 Flash-Lite is 2 months newer than Phi 4 Reasoning Plus.

Gemini 2.5 Flash-Lite

Jun 17, 2025

1.2 years ago

1mo newer
Phi 4 Reasoning Plus

Apr 30, 2025

1.4 years ago

Knowledge Cutoff

When training data ends

Gemini 2.5 Flash-Lite has a knowledge cutoff of 2025-01-01, while Phi 4 Reasoning Plus has a cutoff of 2025-03-01.

Phi 4 Reasoning Plus has more recent training data (up to 2025-03-01), making it potentially better informed about events through that date compared to Gemini 2.5 Flash-Lite (2025-01-01).

Gemini 2.5 Flash-Lite

Jan 2025

Phi 4 Reasoning Plus

Mar 2025

2 mo newer

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Gemini 2.5 Flash-Lite and Phi 4 Reasoning Plus side-by-side, then vote on the output you prefer.

Gemini 2.5 Flash-Lite
✓ Preferred
Phi 4 Reasoning Plus
Open in Playground

FAQ

Common questions about Gemini 2.5 Flash-Lite vs Phi 4 Reasoning Plus.

Which is better, Gemini 2.5 Flash-Lite or Phi 4 Reasoning Plus?

Gemini 2.5 Flash-Lite and Phi 4 Reasoning Plus are closely matched on the LLM Stats Score at 10.6 and 15.2. Gemini 2.5 Flash-Lite is made by Google and Phi 4 Reasoning Plus is made by Microsoft. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Gemini 2.5 Flash-Lite compare to Phi 4 Reasoning Plus in benchmarks?

Gemini 2.5 Flash-Lite scores FACTS Grounding: 84.1%, Global-MMLU-Lite: 81.1%, MMMU: 72.9%, GPQA: 64.6%, Vibe-Eval: 51.3%. 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 2.5 Flash-Lite and Phi 4 Reasoning Plus?

Gemini 2.5 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 2.5 Flash-Lite and Phi 4 Reasoning Plus?

Key differences include LLM Stats Score (10.6 vs 15.2), multimodal support (yes vs no), licensing (Creative Commons Attribution 4.0 License vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 2.5 Flash-Lite and Phi 4 Reasoning Plus?

Gemini 2.5 Flash-Lite is developed by Google and Phi 4 Reasoning Plus is developed by Microsoft.

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