Comprehensive side-by-side LLM comparison
Claude Opus 4.5 leads with 2.4% higher average benchmark score. Claude Opus 4.5 offers 59.9K more tokens in context window than GLM 5. GLM 5 is $26.64 cheaper per million tokens. Claude Opus 4.5 supports multimodal inputs. Claude Opus 4.5 is available on 3 providers. Both models have their strengths depending on your specific coding needs.
Anthropic
Claude Opus 4.5, released by Anthropic in November 2025, is a large language model from the Claude 4.5 family built for demanding reasoning tasks, advanced code generation, and complex agentic workflows. It features a 200K token context window, 64K maximum output tokens, native image understanding, and extended thinking with configurable effort levels. Opus 4.5 targets deep analytical work, multi-step tool orchestration, and applications requiring sustained reasoning across long, complex tasks.
Zhipu AI
GLM-5 is a large language model from Zhipu AI with 745 billion total parameters and 44 billion active parameters per inference, designed for agentic intelligence, advanced reasoning, and frontier-level performance. It features a 200K token context window and targets complex multi-step tasks requiring sustained reasoning and tool use. GLM-5 is available via Zhipu AI's Z.ai platform under an MIT license.
3 months newer

Claude Opus 4.5
Anthropic
2025-11-01
GLM 5
Zhipu AI
2026-02-11
Cost per million tokens (USD)
Claude Opus 4.5
GLM 5
Context window and performance specifications
Average performance across 2 common benchmarks
Claude Opus 4.5
GLM 5
Performance comparison across key benchmark categories
Claude Opus 4.5
GLM 5
Claude Opus 4.5
2025-05
Available providers and their performance metrics
Claude Opus 4.5
Anthropic
AWS Bedrock
Google Cloud Vertex AI
GLM 5
Claude Opus 4.5
GLM 5
Claude Opus 4.5
GLM 5
Zhipu AI