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Claude Opus 4.6 vs GLM-4.5 Air
Comprehensive side-by-side LLM comparison
Claude Opus 4.6 leads with 25.5% higher average benchmark score. Claude Opus 4.6 offers 195.9K more tokens in context window than GLM-4.5 Air. GLM-4.5 Air is $29.90 cheaper per million tokens. Claude Opus 4.6 supports multimodal inputs. Claude Opus 4.6 is available on 3 providers. Overall, Claude Opus 4.6 is the stronger choice for coding tasks.
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Anthropic
Claude Opus 4.6, released by Anthropic in February 2026, is a large language model from the Claude 4 family designed for complex agent orchestration, extended reasoning, and long-form code generation. It features a 200K token context window (extendable to 1M tokens in beta), 128K maximum output tokens, native image understanding, and extended thinking with both standard and adaptive effort modes. Opus 4.6 targets multi-step agentic workflows, parallel tool use, and applications requiring sustained reasoning over large contexts.
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Zhipu AI
GLM-4.5 Air is a lightweight variant from Zhipu AI's GLM-4 model family, designed for efficient deployments requiring lower inference cost while maintaining strong language understanding and generation capabilities. It targets cost-sensitive production workloads, API integrations, and applications where the full GLM-4.x series capacity exceeds requirements.
6 months newer
GLM-4.5 Air
Zhipu AI
2025-07-28
Claude Opus 4.6
Anthropic
2026-02
Pricing Comparison
Cost per million tokens (USD)
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Claude Opus 4.6
Input:$5.00
Output:$25.00
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GLM-4.5 Air
Input:$0.05
Output:$0.05($29.90 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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Claude Opus 4.6
Average Score:59.5%(+25.5%)
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GLM-4.5 Air
Average Score:34.0%
Performance comparison across key benchmark categories
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Claude Opus 4.6
Tool Use59.5%(+25.5%)
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GLM-4.5 Air
Tool Use34.0%
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Knowledge Cutoff
Training data recency comparison
Claude Opus 4.6
2025-05
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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Claude Opus 4.6
3 providers
Anthropic
AWS Bedrock
Google Cloud Vertex AI
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GLM-4.5 Air
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Claude Opus 4.6
Avg Score:59.5%(+25.5%)
Providers:3
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GLM-4.5 Air
Avg Score:34.0%
Providers:1