Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with improvements across sy…
Model details →Anthropic: Claude Sonnet 4.5 vs Z.ai: GLM 5
Anthropic: Claude Sonnet 4.5 and Z.ai: GLM 5 are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
GLM-5 is Z.ai’s flagship open-source foundation model engineered for complex systems design and long-horizon agent workflows. Built for expert developers, it delivers production-grade performance on large-scale programming tasks, rivaling l…
Model details →Side-by-side comparison
| Capability | Anthropic: Claude Sonnet 4.5 | Z.ai: GLM 5 | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1M | 80K | 🏆 Anthropic: Claude Sonnet 4.5 |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $3.00 | $0.72 | 🏆 Z.ai: GLM 5 |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $15.00 | $2.30 | 🏆 Z.ai: GLM 5 |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | — | 🏆 Anthropic: Claude Sonnet 4.5 |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is Anthropic: Claude Sonnet 4.5 better than Z.ai: GLM 5?
Anthropic: Claude Sonnet 4.5 and Z.ai: GLM 5 are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
What's the price difference between Anthropic: Claude Sonnet 4.5 and Z.ai: GLM 5?
Input: $3.00 vs $0.72 per 1M tokens. Output: $15.00 vs $2.30 per 1M tokens.
What context windows do Anthropic: Claude Sonnet 4.5 and Z.ai: GLM 5 support?
Anthropic: Claude Sonnet 4.5 supports up to 1M tokens. Z.ai: GLM 5 supports up to 80K tokens.
Do both Anthropic: Claude Sonnet 4.5 and Z.ai: GLM 5 support tool calling?
Anthropic: Claude Sonnet 4.5: yes. Z.ai: GLM 5: yes.