GLM 5.2 is a large-scale reasoning model from Z.ai. It supports text input and output with a 1M-token context window, and is suited for long-horizon agent workflows, project-level software engineering,...
Model details →Z.ai: GLM 5.2 vs Anthropic: Claude Fable Latest
Z.ai: GLM 5.2 wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
This model always redirects to the latest model in the Claude Fable family.
Model details →Side-by-side comparison
| Capability | Z.ai: GLM 5.2 | Anthropic: Claude Fable Latest | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1.0M | 1M | 🏆 Z.ai: GLM 5.2 |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.10 | $10.00 | 🏆 Z.ai: GLM 5.2 |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.31 | $50.00 | 🏆 Z.ai: GLM 5.2 |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | — | Yes | 🏆 Anthropic: Claude Fable Latest |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is Z.ai: GLM 5.2 better than Anthropic: Claude Fable Latest?
Z.ai: GLM 5.2 wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Z.ai: GLM 5.2 and Anthropic: Claude Fable Latest?
Input: $0.10 vs $10.00 per 1M tokens. Output: $0.31 vs $50.00 per 1M tokens.
What context windows do Z.ai: GLM 5.2 and Anthropic: Claude Fable Latest support?
Z.ai: GLM 5.2 supports up to 1.0M tokens. Anthropic: Claude Fable Latest supports up to 1M tokens.
Do both Z.ai: GLM 5.2 and Anthropic: Claude Fable Latest support tool calling?
Z.ai: GLM 5.2: yes. Anthropic: Claude Fable Latest: yes.
Compare Z.ai: GLM 5.2 with other models
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