Model Comparison
GLM-5.3 (Max)
vs. Claude Sonnet 5.5 (Max, Default Fallback)
Comparing 2 AI models · 0 benchmarks · Z AI, Anthropic
Recommended Pick
Z GLM-5.3 (Max)6 metric winsStrongest on: Value, Input price, Output price
Best Value
GLM-5.3 (Max)
100.0 value score
44.8 reasoning / $2.15/1M
Lowest Price
GLM-5.3 (Max)
$1.40/1M input price
Best Reasoning
Claude Sonnet 5.5 (Max, Default Fallback)
56.0 reasoning score
Blends available reasoning benchmarks
Best for Coding
GLM-5.3 (Max)
74.8 coding index
Differences That Matter
Best value
GLM-5.3 (Max) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
GLM-5.3 (Max) is 1.4x cheaper on input tokens than Claude Sonnet 5.5 (Max, Default Fallback).
Speed gap
Claude Sonnet 5.5 (Max, Default Fallback) generates about 1.5x as many tokens per second as GLM-5.3 (Max).
Reasoning gap
Claude Sonnet 5.5 (Max, Default Fallback) leads GLM-5.3 (Max) by 11.2 points on reasoning.
Top-pick rationale
GLM-5.3 (Max) wins 6 measurable categories, including Value, Input price, Output price, Blended price.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
GLM-5.3 (Max)
Z AI
TTFT
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Time
—
tok/s
—
Tokens
—
Cost
—
Claude Sonnet 5.5 (Max, Default Fallback)
Anthropic
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
Secure AI Chat made in Europe
Use open-weight models like DeepSeek, Qwen and Kimi in one app.
EU-hosted open models, one API
Servers in Germany & Finland. Operated by a German company under the GDPR, DPA available, ISO 27001-certified data centres.
Full Comparison
| Metric | Top Pick Z GLM-5.3 (Max) | An Claude Sonnet 5.5 (Max, Default Fallback) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $1.40/1M | $2.00/1M |
| Output Cost | $4.40/1M | $10.00/1M |
| Blended (3:1) | $2.15/1M | $4.00/1M |
| Specifications | ||
| Organization | Z AI | Anthropic |
| Release Date | Aug 18, 2026 | Sep 28, 2026 |
| Performance & Speed | ||
| Throughput | 87.9 tok/s | 134.3 tok/s |
| TTFT | 2470ms | 388540ms |
| Latency | 25230ms | 388540ms |
| Composite Indices | ||
| Value Score | 100.0 | 67.2 |
| Reasoning Score | 44.8 | 56.0 |
| Intelligence | 44.8 | 56.0 |
| Coding | 74.8 | — |
Key Takeaways
GLM-5.3 (Max) offers the best value at $1.40/1M,making it ideal for high-volume applications and cost-conscious projects.
Claude Sonnet 5.5 (Max, Default Fallback) has the strongest reasoning profile with a 56.0 reasoning score,combining the available reasoning-heavy benchmarks.
GLM-5.3 (Max) reaches a 74.8 coding index,making it the top choice for software development and code generation tasks.
All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
GLM-5.3 (Max)
- Cost-sensitive applications
- High-volume processing
- Code generation
- Software development
Claude Sonnet 5.5 (Max, Default Fallback)
- Complex reasoning tasks
- Research & analysis
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