GLM-5.3-Flash vs Phi 4 Reasoning Plus
Comparing GLM-5.3-Flash and Phi 4 Reasoning Plus across benchmarks, pricing, and capabilities.
Zhipu AI · Microsoft · Updated for 2026
Which is better?
GLM-5.3-Flash and Phi 4 Reasoning Plus trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
Based on current benchmark, pricing, and model metadata for 2026.
Choose GLM-5.3-Flash
- you want the most recent training data — it shipped Aug 2026
Choose Phi 4 Reasoning Plus
- you are already invested in the Microsoft ecosystem
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
GLM-5.3-Flash and Phi 4 Reasoning Plusdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Arena Performance
Playground indexes and blind preference scores
Model Size
Parameter count comparison
GLM-5.3-Flash has 306.0B more parameters than Phi 4 Reasoning Plus, making it 2185.7% larger.
Context Window
Maximum input and output token capacity
Only GLM-5.3-Flash specifies input context (1,048,576 tokens). Only GLM-5.3-Flash specifies output context (131,072 tokens).
Input Capabilities
Supported data types and modalities
GLM-5.3-Flash supports multimodal inputs, whereas Phi 4 Reasoning Plus does not.
GLM-5.3-Flash can handle both text and other forms of data like images, making it suitable for multimodal applications.
GLM-5.3-Flash
Phi 4 Reasoning Plus
License
Usage and distribution terms
Both models are licensed under MIT.
Both models share the same licensing terms, providing consistent usage rights.
MIT
Open weights
MIT
Open weights
Release Timeline
When each model was launched
GLM-5.3-Flash was released on 2026-08-26, while Phi 4 Reasoning Plus was released on 2025-04-30.
GLM-5.3-Flash is 16 months newer than Phi 4 Reasoning Plus.
Aug 26, 2026
0 days ago
1.3yr newerApr 30, 2025
1.3 years ago
Knowledge Cutoff
When training data ends
Phi 4 Reasoning Plus has a documented knowledge cutoff of 2025-03-01, while GLM-5.3-Flash'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 GLM-5.3-Flash's cutoff date.
—
Mar 2025
Outputs Comparison
Judge for yourself.
Run your own prompts against GLM-5.3-Flash and Phi 4 Reasoning Plus side-by-side, then vote on the output you prefer.
FAQ
Common questions about GLM-5.3-Flash vs Phi 4 Reasoning Plus.