Model Comparison

GLM-5 vs GLM-4.5-AirWhich is better in 2026?

GLM-5 significantly outperforms across most benchmarks.

Verdict: GLM-5 vs GLM-4.5-Air — which is better?

GLM-5 (by Zhipu AI) and GLM-4.5-Air (by Zhipu AI) 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.

GLM-5 outperforms in 2 benchmarks (BrowseComp, SWE-Bench Verified), while GLM-4.5-Air is better at 0 benchmarks. GLM-5 significantly outperforms across most benchmarks.

Choose GLM-5 if…

  • you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
  • you want the most recent training data — it shipped Feb 2026

Choose GLM-4.5-Air if…

  • you are already invested in the Zhipu AI ecosystem
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Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

GLM-5 outperforms in 2 benchmarks (BrowseComp, SWE-Bench Verified), while GLM-4.5-Air is better at 0 benchmarks.

GLM-5 significantly outperforms across most benchmarks.

Sat Jun 13 2026 • llm-stats.com

Arena Performance

Human preference votes

Model Size

Parameter count comparison

638.0B diff

GLM-5 has 638.0B more parameters than GLM-4.5-Air, making it 601.9% larger.

Zhipu AI
GLM-5
744.0Bparameters
Zhipu AI
GLM-4.5-Air
106.0Bparameters
744.0B
GLM-5
106.0B
GLM-4.5-Air

Context Window

Maximum input and output token capacity

Only GLM-5 specifies input context (200,000 tokens). Only GLM-5 specifies output context (128,000 tokens).

Zhipu AI
GLM-5
Input200,000 tokens
Output128,000 tokens
Zhipu AI
GLM-4.5-Air
Input- tokens
Output- tokens
Sat Jun 13 2026 • llm-stats.com

License

Usage and distribution terms

Both models are licensed under MIT.

Both models share the same licensing terms, providing consistent usage rights.

GLM-5

MIT

Open weights

GLM-4.5-Air

MIT

Open weights

Release Timeline

When each model was launched

GLM-5 was released on 2026-02-11, while GLM-4.5-Air was released on 2025-07-28.

GLM-5 is 7 months newer than GLM-4.5-Air.

GLM-5

Feb 11, 2026

4 months ago

6mo newer
GLM-4.5-Air

Jul 28, 2025

10 months ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

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Key Takeaways

Zhipu AI
Larger context window (200,000 tokens)
Higher BrowseComp score (75.9% vs 21.3%)
Higher SWE-Bench Verified score (77.8% vs 57.6%)
Zhipu AI

No standout differentiators in the data we have for this pair.

Detailed Comparison

AI Model Comparison Table
Feature
Zhipu AI
GLM-5
Zhipu AI
GLM-4.5-Air

FAQ

Common questions about GLM-5 vs GLM-4.5-Air.

Which is better, GLM-5 or GLM-4.5-Air?

GLM-5 significantly outperforms across most benchmarks. GLM-5 is made by Zhipu AI and GLM-4.5-Air is made by Zhipu AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GLM-5 compare to GLM-4.5-Air in benchmarks?

GLM-5 scores t2-bench: 89.7%, SWE-Bench Verified: 77.8%, BrowseComp: 75.9%, MCP Atlas: 67.8%, Terminal-Bench 2.0: 56.2%. GLM-4.5-Air scores MATH-500: 98.1%, AIME 2024: 89.4%, MMLU-Pro: 81.4%, TAU-bench Retail: 77.9%, BFCL-v3: 76.4%.

What are the context window sizes for GLM-5 and GLM-4.5-Air?

GLM-5 supports 200K tokens and GLM-4.5-Air supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

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