Model Comparison

GLM-4.5-Air vs Kimi K2 0905Which is better in 2026?

Kimi K2 0905 shows notably better performance in the majority of benchmarks.

Verdict: GLM-4.5-Air vs Kimi K2 0905 — which is better?

GLM-4.5-Air (by Zhipu AI) and Kimi K2 0905 (by Moonshot 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-4.5-Air outperforms in 1 benchmarks (AIME 2024), while Kimi K2 0905 is better at 2 benchmarks (GPQA, MMLU-Pro). Kimi K2 0905 shows notably better performance in the majority of benchmarks.

Choose GLM-4.5-Air if…

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

Choose Kimi K2 0905 if…

  • you want the strongest raw capability — it leads on 2 of 3 shared benchmarks
  • you want the most recent training data — it shipped Sep 2025
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Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

GLM-4.5-Air outperforms in 1 benchmarks (AIME 2024), while Kimi K2 0905 is better at 2 benchmarks (GPQA, MMLU-Pro).

Kimi K2 0905 shows notably better performance in the majority of benchmarks.

Thu Jun 25 2026 • llm-stats.com

Arena Performance

Human preference votes

Model Size

Parameter count comparison

894.0B diff

Kimi K2 0905 has 894.0B more parameters than GLM-4.5-Air, making it 843.4% larger.

Zhipu AI
GLM-4.5-Air
106.0Bparameters
Moonshot AI
Kimi K2 0905
1.0Tparameters
106.0B
GLM-4.5-Air
1000.0B
Kimi K2 0905

Context Window

Maximum input and output token capacity

Only Kimi K2 0905 specifies input context (262,144 tokens). Only Kimi K2 0905 specifies output context (262,144 tokens).

Zhipu AI
GLM-4.5-Air
Input- tokens
Output- tokens
Moonshot AI
Kimi K2 0905
Input262,144 tokens
Output262,144 tokens
Thu Jun 25 2026 • llm-stats.com

License

Usage and distribution terms

GLM-4.5-Air is licensed under MIT, while Kimi K2 0905 uses a proprietary license.

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

GLM-4.5-Air

MIT

Open weights

Kimi K2 0905

Proprietary

Closed source

Release Timeline

When each model was launched

GLM-4.5-Air was released on 2025-07-28, while Kimi K2 0905 was released on 2025-09-05.

Kimi K2 0905 is 1 month newer than GLM-4.5-Air.

GLM-4.5-Air

Jul 28, 2025

11 months ago

Kimi K2 0905

Sep 5, 2025

9 months ago

1mo newer

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

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Zhipu AI
Has open weights
Higher AIME 2024 score (89.4% vs 72.0%)
Moonshot AI
Larger context window (262,144 tokens)
Higher GPQA score (75.8% vs 75.0%)
Higher MMLU-Pro score (82.5% vs 81.4%)

Detailed Comparison

AI Model Comparison Table
Feature
Zhipu AI
GLM-4.5-Air
Moonshot AI
Kimi K2 0905

FAQ

Common questions about GLM-4.5-Air vs Kimi K2 0905.

Which is better, GLM-4.5-Air or Kimi K2 0905?

Kimi K2 0905 shows notably better performance in the majority of benchmarks. GLM-4.5-Air is made by Zhipu AI and Kimi K2 0905 is made by Moonshot AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GLM-4.5-Air compare to Kimi K2 0905 in benchmarks?

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%. Kimi K2 0905 scores HumanEval: 94.5%, MMLU: 90.2%, MATH: 89.1%, MMLU-Pro: 82.5%, GPQA: 75.8%.

What are the context window sizes for GLM-4.5-Air and Kimi K2 0905?

GLM-4.5-Air supports an unknown number of tokens and Kimi K2 0905 supports 262K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GLM-4.5-Air and Kimi K2 0905?

Key differences include licensing (MIT vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes GLM-4.5-Air and Kimi K2 0905?

GLM-4.5-Air is developed by Zhipu AI and Kimi K2 0905 is developed by Moonshot AI.

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