The AI arena is free today

Open Superagent

Particle-1 vs Phi 4 Reasoning

Particle-1 leads the LLM Stats Score 32.0 to 11.5.

Particle AI · Microsoft · Updated for 2026

Which is better?

Particle-1 leads the overall LLM Stats Score 32.0 to 11.5, ranking #135 overall.

In the 1 individual benchmarks reported for both models, Particle-1 wins 1; 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 Particle-1

  • overall performance matters — it scores 32.0 and ranks #135 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you want the most recent training data — it shipped Oct 2026

Choose Phi 4 Reasoning

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

At a glance

The differences that matter most.

Core performance indexes
32.0
#135
11.5
#295
31.2
#137
12.1
#282
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
$0.25 / M
— / M
Output price
$1.00 / M
— / M
Context window
1,048,576
—

Individual benchmarks

3 reported for Particle-1 · 11 for Phi 4 Reasoning

1 shared

Particle-1 outperforms in 1 benchmarks (GPQA), while Phi 4 Reasoning is better at 0 benchmarks.

Particle-1 significantly outperforms across most benchmarks.

Tue Nov 03 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Particle-1 specifies input context (1,048,576 tokens). Only Particle-1 specifies output context (131,072 tokens).

Particle AI
Particle-1
Input1,048,576 tokens
Output131,072 tokens
Microsoft
Phi 4 Reasoning
Input- tokens
Output- tokens
Tue Nov 03 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Particle-1 supports multimodal inputs, whereas Phi 4 Reasoning does not.

Particle-1 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Particle-1

Text
Images
Audio
Video

Phi 4 Reasoning

Text
Images
Audio
Video

License

Usage and distribution terms

Particle-1 is licensed under a proprietary license, while Phi 4 Reasoning uses MIT.

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

Particle-1

Proprietary

Closed source

Phi 4 Reasoning

MIT

Open weights

Release Timeline

When each model was launched

Particle-1 was released on 2026-10-28, while Phi 4 Reasoning was released on 2025-04-30.

Particle-1 is 18 months newer than Phi 4 Reasoning.

Particle-1

Oct 28, 2026

5 days ago

1.5yr newer
Phi 4 Reasoning

Apr 30, 2025

1.5 years ago

Knowledge Cutoff

When training data ends

Phi 4 Reasoning has a documented knowledge cutoff of 2025-03-01, while Particle-1's cutoff date is not specified.

We can confirm Phi 4 Reasoning's training data extends to 2025-03-01, but cannot make a direct comparison without Particle-1's cutoff date.

Particle-1

—

Phi 4 Reasoning

Mar 2025

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Particle-1 and Phi 4 Reasoning side-by-side, then vote on the output you prefer.

Particle-1
✓ Preferred
Phi 4 Reasoning
Open in Playground

FAQ

Common questions about Particle-1 vs Phi 4 Reasoning.

Which is better, Particle-1 or Phi 4 Reasoning?

Particle-1 leads the LLM Stats Score 32.0 to 11.5. Particle-1 is made by Particle AI and Phi 4 Reasoning is made by Microsoft. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Particle-1 compare to Phi 4 Reasoning in benchmarks?

Particle-1 scores GPQA: 90.4%, BabyVision: 89.2%, MMLU: 86.1%. Phi 4 Reasoning scores FlenQA: 97.7%, HumanEval+: 92.9%, IFEval: 83.4%, OmniMath: 76.6%, AIME 2024: 75.3%.

What are the context window sizes for Particle-1 and Phi 4 Reasoning?

Particle-1 supports 1.0M tokens and Phi 4 Reasoning 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 Particle-1 and Phi 4 Reasoning?

Key differences include LLM Stats Score (32.0 vs 11.5), multimodal support (yes vs no), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Particle-1 and Phi 4 Reasoning?

Particle-1 is developed by Particle AI and Phi 4 Reasoning is developed by Microsoft.