GLM-5 vs Claude Opus 4.5 Comparison

Comparing GLM-5 and Claude Opus 4.5 across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

GLM-5 outperforms in 1 benchmarks (MCP Atlas), while Claude Opus 4.5 is better at 2 benchmarks (SWE-Bench Verified, Terminal-Bench 2.0).

Claude Opus 4.5 shows notably better performance in the majority of benchmarks.

Tue Mar 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GLM-5 costs less

For input processing, GLM-5 ($1.00/1M tokens) is 5.0x cheaper than Claude Opus 4.5 ($5.00/1M tokens).

For output processing, GLM-5 ($3.20/1M tokens) is 7.8x cheaper than Claude Opus 4.5 ($25.00/1M tokens).

In conclusion, Claude Opus 4.5 is more expensive than GLM-5.*

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

Lowest available price from all providers

Tue Mar 17 2026 • llm-stats.com

GLM-5

Input tokens$1.00

Output tokens$3.20

Best providerUnknown Organization

Claude Opus 4.5

Input tokens$5.00

Output tokens$25.00

Best providerAnthropic

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Context Window

Maximum input and output token capacity

Both models have the same input context window of 200,000 tokens. GLM-5 can generate longer responses up to 128,000 tokens, while Claude Opus 4.5 is limited to 64,000 tokens.

GLM-5

Input200,000 tokens

Output128,000 tokens

Claude Opus 4.5

Input200,000 tokens

Output64,000 tokens

Tue Mar 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Opus 4.5 supports multimodal inputs, whereas GLM-5 does not.

Claude Opus 4.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

GLM-5

Text

Images

Audio

Video

Claude Opus 4.5

Text

Images

Audio

Video

License

Usage and distribution terms

GLM-5 is licensed under MIT, while Claude Opus 4.5 uses a proprietary license.

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

GLM-5

MIT

Open weights

Claude Opus 4.5

Proprietary

Closed source

Release Timeline

When each model was launched

GLM-5 was released on 2026-02-11, while Claude Opus 4.5 was released on 2025-11-24.

GLM-5 is 3 months newer than Claude Opus 4.5.

GLM-5

Feb 11, 2026

1 months ago

2mo newer

Claude Opus 4.5

Nov 24, 2025

3 months ago

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a documented knowledge cutoff of 2025-03-31, while GLM-5's cutoff date is not specified.

We can confirm Claude Opus 4.5's training data extends to 2025-03-31, but cannot make a direct comparison without GLM-5's cutoff date.

GLM-5

—

Claude Opus 4.5

Mar 2025

Provider Availability

GLM-5 is available from ZAI. Claude Opus 4.5 is available from Anthropic. The availability of providers can affect quality of the model and reliability.