GLM 4.5

GLM 4.5 is Z.ai's foundation model released in mid-2025 with a 131K-token context window.

Strengths

Handles general-purpose language tasks across reasoning, generation, and understanding with a moderate context window for multi-turn conversations and document processing.

Best for

Applications requiring solid language understanding and generation with extended context, where the newer GLM 5 series or specialized variants are not required.

Limitations

Superseded by GLM 4.6 and later models in the lineup; does not support multimodal inputs (text and images) unless using GLM 4.5V.