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Anthropic

Claude Fable 5

VS
Z.ai (Zhipu AI)

GLM-5

✍️ Analysis by:the whichllmmodel Editorial Team|📅 Updated: June 2026

Decision Recommendation

⚖️ Editorial Verdict: In our analysis, Claude Fable 5 is the premium intelligence choice, scoring 80.3% higher on coding benchmarks. However, this accuracy premium comes with a cost overhead: GLM-5 is 12.9x cheaper to run. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, GLM-5 offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of Claude Fable 5 fully justifies the cost.

Model Specs

Claude Fable 5

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+)
80.3%
Reasoning (gpqa-diamond)Winner (+8.1%)
94.1%

Cost & Performance

Cost (per 1M tokens)
$20.00Input: $10.00 | Output: $50.00
Speed
60.3 tps
Context WindowLarger
1M tokens
Model Specs

GLM-5

Benchmarks & Scores

Coding (swe-bench-pro)
N/A
Reasoning (gpqa-diamond)
86%

Cost & Performance

Cost (per 1M tokens)12.9x cheaper
$1.55Input: $1.00 | Output: $3.20
Speed
N/A
Context Window
204.8k tokens
Read our data collection methodology

Frequently Asked Questions

GLM-5 is cheaper than Claude Fable 5. GLM-5 has a blended cost of $1.55/1M tokens, which is about 12.9x cheaper than Claude Fable 5 at $20.00/1M tokens.

Speed data is not available for GLM-5, while Claude Fable 5 generates 60.3 tokens per second.

Claude Fable 5 is better for coding tasks. It scores 80.3% on coding evaluations (swe-bench-pro) compared to GLM-5 which scores N/A.

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