Claude Sonnet 5 vs GLM 4.5 Air
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Claude Sonnet 5 and GLM 4.5 Air.
Claude Sonnet 5
Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reasoning effort levels (low, medium, high, max,...
GLM 4.5 Air
GLM-4.5-Air is the lightweight variant of our latest flagship model family, also purpose-built for agent-centric applications. Like GLM-4.5, it adopts the Mixture-of-Experts (MoE) architecture but with a more compact parameter...
Technical Specifications
| Specification | Claude Sonnet 5 | GLM 4.5 Air |
|---|---|---|
| Provider | Anthropic | Zhipu AI |
| Context Window | 1,000,000 tokens | 131,072 tokens |
| Agent Suitability | N/A | N/A |
| Time to First Token (TTFT) | N/A | N/A |
| Deployment Model | managed api | managed api |
| Production Stability | beta | stable |
| API Available | Yes | Yes |
| Released Date | 2026-06-30 | 2025-07-25 |
API Pricing Comparison
Input Price per Million Tokens
Claude Sonnet 5
$2.00
GLM 4.5 Air
$0.13
Output Price per Million Tokens
Claude Sonnet 5
$10.00
GLM 4.5 Air
$0.85
Want to test both models live?
Run side-by-side prompt prompts in our dynamic Sandbox. Check execution speeds, latency metrics, and compute actual costs in real-time.
Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
Claude Sonnet 5 Quirks & Gotchas
No developer gotchas reported.
GLM 4.5 Air Quirks & Gotchas
No developer gotchas reported.