Claude Sonnet 4.6 vs GLM-4.5 Comparison

Comparing Claude Sonnet 4.6 and GLM-4.5 across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

Claude Sonnet 4.6 outperforms in 4 benchmarks (BrowseComp, GPQA, Humanity's Last Exam, SWE-Bench Verified), while GLM-4.5 is better at 0 benchmarks.

Claude Sonnet 4.6 significantly outperforms across most benchmarks.

Mon Mar 16 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GLM-4.5 costs less

For input processing, Claude Sonnet 4.6 ($3.00/1M tokens) is 7.5x more expensive than GLM-4.5 ($0.40/1M tokens).

For output processing, Claude Sonnet 4.6 ($15.00/1M tokens) is 9.4x more expensive than GLM-4.5 ($1.60/1M tokens).

In conclusion, Claude Sonnet 4.6 is more expensive than GLM-4.5.*

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

Lowest available price from all providers

Mon Mar 16 2026 • llm-stats.com

Claude Sonnet 4.6

Input tokens$3.00

Output tokens$15.00

Best providerAnthropic

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

Claude Sonnet 4.6 accepts 200,000 input tokens compared to GLM-4.5's 131,072 tokens. GLM-4.5 can generate longer responses up to 131,072 tokens, while Claude Sonnet 4.6 is limited to 64,000 tokens.

Claude Sonnet 4.6

Input200,000 tokens

Output64,000 tokens

GLM-4.5

Input131,072 tokens

Output131,072 tokens

Mon Mar 16 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Sonnet 4.6 supports multimodal inputs, whereas GLM-4.5 does not.

Claude Sonnet 4.6 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Sonnet 4.6

Text

Images

Audio

Video

GLM-4.5

Text

Images

Audio

Video

License

Usage and distribution terms

Claude Sonnet 4.6 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.

Claude Sonnet 4.6

Proprietary

Closed source

GLM-4.5

MIT

Open weights

Release Timeline

When each model was launched

Claude Sonnet 4.6 was released on 2026-02-17, while GLM-4.5 was released on 2025-07-28.

Claude Sonnet 4.6 is 7 months newer than GLM-4.5.

Claude Sonnet 4.6

Feb 17, 2026

3 weeks ago

6mo newer

GLM-4.5

Jul 28, 2025

7 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

Provider Availability

Claude Sonnet 4.6 is available from Anthropic. GLM-4.5 is available from DeepInfra, Fireworks, Novita. The availability of providers can affect quality of the model and reliability.