whichllmmodel
Back to Dashboard
Anthropic

Claude Fable 5

VS
Z.ai (Zhipu AI)

GLM-5.1

✍️ 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 21.9% higher on coding benchmarks. However, this accuracy premium comes with a cost overhead: GLM-5.1 is 13.3x cheaper to run. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, GLM-5.1 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 (+21.9%)
80.3%
Reasoning (gpqa-diamond)Winner (+7.9%)
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-5.1

Benchmarks & Scores

Coding (swe-bench-pro)
58.4%
Reasoning (gpqa-diamond)
86.2%

Cost & Performance

Cost (per 1M tokens)13.3x cheaper
$1.50Input: $0.98 | Output: $3.08
Speed
N/A
Context Window
204.8k tokens
Read our data collection methodology

Frequently Asked Questions

GLM-5.1 is cheaper than Claude Fable 5. GLM-5.1 has a blended cost of $1.50/1M tokens, which is about 13.3x cheaper than Claude Fable 5 at $20.00/1M tokens.

Speed data is not available for GLM-5.1, 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-5.1 which scores 58.4%.

Want to customize weights or add more models?

Open our interactive dashboard where you can adjust your priority levels for speed, budget, or accuracy slider-bars and watch model rankings calculate dynamically.

Customize in Interactive Dashboard