Model Comparison
GLM-5 (Reasoning)
vs. Claude Opus 5.5 (Max, Default Fallback)
Comparing 2 AI models · 0 benchmarks · Z AI, Anthropic
Recommended Pick
Z GLM-5 (Reasoning)6 metric winsStrongest on: Value, Input price, Output price
Best Value
GLM-5 (Reasoning)
100.0 value score
27.9 reasoning / $1.55/1M
Lowest Price
GLM-5 (Reasoning)
$1.00/1M input price
Best Reasoning
Claude Opus 5.5 (Max, Default Fallback)
57.6 reasoning score
Blends available reasoning benchmarks
Differences That Matter
Best value
GLM-5 (Reasoning) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
GLM-5 (Reasoning) is 4.0x cheaper on input tokens than Claude Opus 5.5 (Max, Default Fallback).
Speed gap
Claude Opus 5.5 (Max, Default Fallback) generates about 1.3x as many tokens per second as GLM-5 (Reasoning).
Reasoning gap
Claude Opus 5.5 (Max, Default Fallback) leads GLM-5 (Reasoning) by 29.7 points on reasoning.
Top-pick rationale
GLM-5 (Reasoning) 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 (Reasoning)
Z AI
TTFT
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Time
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tok/s
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Tokens
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Cost
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Claude Opus 5.5 (Max, Default Fallback)
Anthropic
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
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Full Comparison
| Metric | Top Pick Z GLM-5 (Reasoning) | An Claude Opus 5.5 (Max, Default Fallback) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $1.00/1M | $4.00/1M |
| Output Cost | $3.20/1M | $20.00/1M |
| Blended (3:1) | $1.55/1M | $8.00/1M |
| Specifications | ||
| Organization | Z AI | Anthropic |
| Release Date | Feb 11, 2026 | Sep 22, 2026 |
| Performance & Speed | ||
| Throughput | 74.0 tok/s | 97.7 tok/s |
| TTFT | 1600ms | 525630ms |
| Latency | 43560ms | 525630ms |
| Composite Indices | ||
| Value Score | 100.0 | 40.0 |
| Reasoning Score | 27.9 | 57.6 |
| Intelligence | 27.9 | 57.6 |
Key Takeaways
GLM-5 (Reasoning) offers the best value at $1.00/1M,making it ideal for high-volume applications and cost-conscious projects.
Claude Opus 5.5 (Max, Default Fallback) has the strongest reasoning profile with a 57.6 reasoning score,combining the available reasoning-heavy benchmarks.
All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
GLM-5 (Reasoning)
- Cost-sensitive applications
- High-volume processing
Claude Opus 5.5 (Max, Default Fallback)
- Complex reasoning tasks
- Research & analysis
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