Model Comparison
GLM-5.1 (Non-reasoning)
vs. GPT-5.2 (Non-reasoning)
Comparing 2 AI models · 10 benchmarks · Z AI, OpenAI
Recommended Pick
Z GLM-5.1 (Non-reasoning) 13 metric wins Strongest on: Value, Input price, Output price
Best Value
GLM-5.1 (Non-reasoning)
100.0 value score
48.3 reasoning / $2.15/1M
Lowest Price
GLM-5.1 (Non-reasoning)
$1.40/1M input price
Best Reasoning
GLM-5.1 (Non-reasoning)
48.3 reasoning score
Blends available reasoning benchmarks
Best for Coding
GLM-5.1 (Non-reasoning)
35.8 coding index
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Best value
GLM-5.1 (Non-reasoning) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
GLM-5.1 (Non-reasoning) is 1.3x cheaper on input tokens than GPT-5.2 (Non-reasoning).
Speed gap
GPT-5.2 (Non-reasoning) generates about 1.3x as many tokens per second as GLM-5.1 (Non-reasoning).
Reasoning gap
GLM-5.1 (Non-reasoning) leads GPT-5.2 (Non-reasoning) by 7.0 points on reasoning.
Coding gap
GLM-5.1 (Non-reasoning) leads GPT-5.2 (Non-reasoning) by 1.1 points on coding.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
GLM-5.1 (Non-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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GPT-5.2 (Non-reasoning)
OpenAI
TTFT
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Time
—
tok/s
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Tokens
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Cost
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Which answer was more useful?
Full Comparison
| Metric | Top Pick Z GLM-5.1 (Non-reasoning) | Op GPT-5.2 (Non-reasoning) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $1.40/1M | $1.75/1M |
| Output Cost | $4.40/1M | $14.00/1M |
| Blended (3:1) | $2.15/1M | $4.81/1M |
| Specifications | ||
| Organization | Z AI | OpenAI |
| Release Date | Apr 7, 2026 | Dec 11, 2025 |
| Performance & Speed | ||
| Throughput | 52.3 tok/s | 66.8 tok/s |
| TTFT | 844ms | 779ms |
| Latency | 844ms | 779ms |
| Composite Indices | ||
| Value Score | 100.0 | 38.2 |
| Reasoning Score | 48.3 | 41.3 |
| Intelligence | 35.4 | 26.0 |
| Coding | 35.8 | 34.7 |
| Math | — | 51.0 |
| Standard Benchmarks | ||
| GPQA | 83.9% | 71.2% |
| MMLU Pro | — | 81.4% |
| HLE | 25.6% | 7.3% |
| LiveCodeBench | — | 66.9% |
| AIME 2025 | — | 51.0% |
| SciCode | 36.1% | 40.4% |
| LCR | 44.3% | 38.0% |
| IFBench | 52.0% | 47.4% |
| TAU-bench v2 | 97.1% | 46.5% |
| TerminalBench Hard | 35.6% | 31.8% |
Key Takeaways
GLM-5.1 (Non-reasoning) offers the best value at $1.40/1M, making it ideal for high-volume applications and cost-conscious projects.
GLM-5.1 (Non-reasoning) has the strongest reasoning profile with a 48.3 reasoning score, combining the available reasoning-heavy benchmarks.
GLM-5.1 (Non-reasoning) reaches a 35.8 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-5.1 (Non-reasoning)
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
GPT-5.2 (Non-reasoning)
- General-purpose AI
- Versatile applications
