GLM-5.3 vs GPT-4.5
Live Unit Economics, TTFT Latency & Reasoning Benchmark Analysis
Which model is better: GLM-5.3 or GPT-4.5?
Verified Performance & Unit Economics Delta
Daily synchronized metrics from synthetic latency endpoints and benchmark evaluations.
| Metric / Dimension | GLM-5.3 | GPT-4.5 | Net Delta / Advantage |
|---|---|---|---|
| Input Cost / 1M Tokens | $0.35 | $75.00 | GLM-5.3 is 214.3x cheaper |
| Output Cost / 1M Tokens | $1.00 | $150.00 | GLM-5.3 (99.3% lower) |
| Prompt Cache Read / 1M | $0.090 | $37.500 | GLM-5.3 is 416.7x cheaper |
| Prompt Cache Write / 1M | $0.35 | $75.00 | GLM-5.3 is 214.3x cheaper |
| Avg TTFT Response Latency | 160ms | 850ms | GLM-5.3 (+690ms faster) |
| SWE-bench Verified (Coding) | 56% | 38% | GLM-5.3 (+18.0% lead) |
| Inference Value Score (IVR) | 70.5 / 100 | 22.1 / 100 | GLM-5.3 (+48.4 pts) |
Interactive Monthly Token Economics & ROI Forecaster
Model your expected production workload across prompt (input) and completion (output) tokens with prompt caching economics.
Estimated Monthly Spend
$0.35/1M in · $1.00/1M out
Prompt Cache: $0.090/1M read · $0.35/1M write
$75.00/1M in · $150.00/1M out
Prompt Cache: $37.500/1M read · $75.00/1M write
When to Choose GLM-5.3
Choose GLM-5.3 when you need Bilingual flagship foundation model optimized for cross-lingual reasoning, long-form structured analysis, and enterprise tool execution. and have an infrastructure budget aligned with $0.35/1M tokens.
When to Choose GPT-4.5
Choose GPT-4.5 when you need Deep world-knowledge synthesis, high-EQ conversational nuance, and long-form creative generation requiring massive pretraining breadth. and prioritize OpenAI ecosystem integration at $75.00/1M tokens.
Related Questions & Decision Factors
Which is cheaper: GLM-5.3 or GPT-4.5?
GLM-5.3 is cheaper at $0.35/1M input tokens compared to $75.00/1M for GPT-4.5.
Which model has lower latency: GLM-5.3 or GPT-4.5?
GLM-5.3 delivers faster response times with an average TTFT of 160ms vs 850ms for GPT-4.5.
When should you choose GLM-5.3?
Choose GLM-5.3 when you need Bilingual flagship foundation model optimized for cross-lingual reasoning, long-form structured analysis, and enterprise tool execution. and have an infrastructure budget aligned with $0.35/1M tokens.
When should you choose GPT-4.5?
Choose GPT-4.5 when you need Deep world-knowledge synthesis, high-EQ conversational nuance, and long-form creative generation requiring massive pretraining breadth. and prioritize OpenAI ecosystem integration at $75.00/1M tokens.