Gemini 2.5 Flash vs GLM-4.5 Comparison

Comparing Gemini 2.5 Flash and GLM-4.5 across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

Gemini 2.5 Flash outperforms in 1 benchmarks (GPQA), while GLM-4.5 is better at 3 benchmarks (AIME 2024, Humanity's Last Exam, SWE-Bench Verified).

GLM-4.5 shows notably better performance in the majority of benchmarks.

Sat Mar 14 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GLM-4.5 costs less

For input processing, Gemini 2.5 Flash ($0.30/1M tokens) is 1.3x cheaper than GLM-4.5 ($0.40/1M tokens).

For output processing, Gemini 2.5 Flash ($2.50/1M tokens) is 1.6x more expensive than GLM-4.5 ($1.60/1M tokens).

In conclusion, Gemini 2.5 Flash is more expensive than GLM-4.5.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Sat Mar 14 2026 • llm-stats.com

Gemini 2.5 Flash

Input tokens$0.30

Output tokens$2.50

Best providerGoogle

GLM-4.5

Input tokens$0.40

Output tokens$1.60

Best providerDeepinfra

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Context Window

Maximum input and output token capacity

Gemini 2.5 Flash accepts 1,048,576 input tokens compared to GLM-4.5's 131,072 tokens. GLM-4.5 can generate longer responses up to 131,072 tokens, while Gemini 2.5 Flash is limited to 65,536 tokens.

Gemini 2.5 Flash

Input1,048,576 tokens

Output65,536 tokens

GLM-4.5

Input131,072 tokens

Output131,072 tokens

Sat Mar 14 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Gemini 2.5 Flash supports multimodal inputs, whereas GLM-4.5 does not.

Gemini 2.5 Flash can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini 2.5 Flash

Text

Images

Audio

Video

GLM-4.5

Text

Images

Audio

Video

License

Usage and distribution terms

Gemini 2.5 Flash is licensed under a proprietary license, while GLM-4.5 uses MIT.

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

Gemini 2.5 Flash

Proprietary

Closed source

GLM-4.5

MIT

Open weights

Release Timeline

When each model was launched

Gemini 2.5 Flash was released on 2025-05-20, while GLM-4.5 was released on 2025-07-28.

GLM-4.5 is 2 months newer than Gemini 2.5 Flash.

Gemini 2.5 Flash

May 20, 2025

9 months ago

GLM-4.5

Jul 28, 2025

7 months ago

2mo newer

Knowledge Cutoff

When training data ends

Gemini 2.5 Flash has a documented knowledge cutoff of 2025-01-31, while GLM-4.5's cutoff date is not specified.

We can confirm Gemini 2.5 Flash's training data extends to 2025-01-31, but cannot make a direct comparison without GLM-4.5's cutoff date.

Gemini 2.5 Flash

Jan 2025

GLM-4.5

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Provider Availability

Gemini 2.5 Flash is available from Google. GLM-4.5 is available from DeepInfra, Fireworks, Novita. The availability of providers can affect quality of the model and reliability.