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ERNIE 5.5 Flash Preview vs Phi 4 Reasoning Plus

ERNIE 5.5 Flash Preview leads the LLM Stats Score 52.3 to 14.4.

Baidu · Microsoft · Updated for 2026

Which is better?

ERNIE 5.5 Flash Preview leads the overall LLM Stats Score 52.3 to 14.4, ranking #13 overall.

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

Choose ERNIE 5.5 Flash Preview

  • overall performance matters — it scores 52.3 and ranks #13 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you want the most recent training data — it shipped Nov 2026

Choose Phi 4 Reasoning Plus

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

At a glance

The differences that matter most.

ERNIE 5.5 Flash Preview
Baidu
Phi 4 Reasoning Plus
Microsoft
Core performance indexes
LLM Stats Score
52.3
#13
14.4
#278
Reasoning
50.7
#12
14.8
#270
Coding
37.9
#20
5.5
#235
Cost, coverage & limits
Benchmark wins
—
—
Input price
$0.28 / M
— / M
Output price
$1.13 / M
— / M
Context window
1,048,576
—

Individual benchmarks

13 reported for ERNIE 5.5 Flash Preview · 11 for Phi 4 Reasoning Plus

No common benchmarks found

ERNIE 5.5 Flash Preview and Phi 4 Reasoning Plusdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

266.0B diff

ERNIE 5.5 Flash Preview has 266.0B more parameters than Phi 4 Reasoning Plus, making it 1900.0% larger.

Baidu
ERNIE 5.5 Flash Preview
280.0Bparameters
Microsoft
Phi 4 Reasoning Plus
14.0Bparameters
280.0B
ERNIE 5.5 Flash Preview
14.0B
Phi 4 Reasoning Plus

Context Window

Maximum input and output token capacity

Only ERNIE 5.5 Flash Preview specifies input context (1,048,576 tokens). Only ERNIE 5.5 Flash Preview specifies output context (1,048,576 tokens).

Baidu
ERNIE 5.5 Flash Preview
Input1,048,576 tokens
Output1,048,576 tokens
Microsoft
Phi 4 Reasoning Plus
Input- tokens
Output- tokens
Thu Nov 12 2026 • llm-stats.com

License

Usage and distribution terms

ERNIE 5.5 Flash Preview 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.

ERNIE 5.5 Flash Preview

Proprietary

Closed source

Phi 4 Reasoning Plus

MIT

Open weights

Release Timeline

When each model was launched

ERNIE 5.5 Flash Preview was released on 2026-11-11, while Phi 4 Reasoning Plus was released on 2025-04-30.

ERNIE 5.5 Flash Preview is 19 months newer than Phi 4 Reasoning Plus.

ERNIE 5.5 Flash Preview

Nov 11, 2026

1 days ago

1.5yr newer
Phi 4 Reasoning Plus

Apr 30, 2025

1.5 years ago

Knowledge Cutoff

When training data ends

Phi 4 Reasoning Plus has a documented knowledge cutoff of 2025-03-01, while ERNIE 5.5 Flash Preview's cutoff date is not specified.

We can confirm Phi 4 Reasoning Plus's training data extends to 2025-03-01, but cannot make a direct comparison without ERNIE 5.5 Flash Preview's cutoff date.

ERNIE 5.5 Flash Preview

—

Phi 4 Reasoning Plus

Mar 2025

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against ERNIE 5.5 Flash Preview and Phi 4 Reasoning Plus side-by-side, then vote on the output you prefer.

ERNIE 5.5 Flash Preview
✓ Preferred
Phi 4 Reasoning Plus
Open in Playground

FAQ

Common questions about ERNIE 5.5 Flash Preview vs Phi 4 Reasoning Plus.

Which is better, ERNIE 5.5 Flash Preview or Phi 4 Reasoning Plus?

ERNIE 5.5 Flash Preview leads the LLM Stats Score 52.3 to 14.4. ERNIE 5.5 Flash Preview is made by Baidu 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 ERNIE 5.5 Flash Preview compare to Phi 4 Reasoning Plus in benchmarks?

ERNIE 5.5 Flash Preview scores BrowseComp: 87.4%, DRACO: 84.9%, MCP Atlas: 84.6%, DeepSWE 1.1: 71.2%, OfficeQA Pro: 67.9%. 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 ERNIE 5.5 Flash Preview and Phi 4 Reasoning Plus?

ERNIE 5.5 Flash Preview 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 ERNIE 5.5 Flash Preview and Phi 4 Reasoning Plus?

Key differences include LLM Stats Score (52.3 vs 14.4), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes ERNIE 5.5 Flash Preview and Phi 4 Reasoning Plus?

ERNIE 5.5 Flash Preview is developed by Baidu and Phi 4 Reasoning Plus is developed by Microsoft.

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