Which model is better: GLM-5.3-Flash or GPT-4o Mini?
GLM-5.3-Flash is 20.0% cheaper for input tokens ($0.12 vs. $0.15 per 1M tokens) and $0.40 vs. $0.60 for output tokens (1.2x cost advantage). In terms of operational performance, GLM-5.3-Flash delivers lower response latency at 90ms TTFT (130ms faster than GPT-4o Mini) with 175 vs. 140 tok/s throughput. GLM-5.3-Flash leads coding evaluations at 52.8% SWE-bench Verified vs. 41.0% for GPT-4o Mini and 63.5% vs. 40.2% on GPQA Diamond.
Verified daily via automated API latency tests and official documentation.
Zero-Shot RAG Verified
Verified Performance & Unit Economics Delta (12 Dimensions)
Daily synchronized metrics across token pricing, prompt cache economics, latency, throughput, and 5 capability benchmarks.
Metric / Dimension
GLM-5.3-Flash
GPT-4o Mini
Net Delta / Advantage
Input Cost / 1M Tokens
$0.12
$0.15
GLM-5.3-Flash is 1.3x cheaper
Output Cost / 1M Tokens
$0.40
$0.60
GLM-5.3-Flash (33.3% lower)
Prompt Cache Read / 1M
$0.030
$0.075
GLM-5.3-Flash is 2.5x cheaper
Prompt Cache Write / 1M
$0.12
$0.15
GLM-5.3-Flash is 1.3x cheaper
Context Window (Max Output)
262k (16k out)
131k (16k out)
GLM-5.3-Flash (2.0x larger context)
Avg TTFT Response Latency
90ms
220ms
GLM-5.3-Flash (130ms faster)
Generation Speed (Throughput)
175 tok/s
140 tok/s
GLM-5.3-Flash (+35 tok/s faster)
SWE-bench Verified (Coding)
52.8%
41%
GLM-5.3-Flash (+11.8% lead)
GPQA Diamond (PhD STEM)
63.5%
40.2%
GLM-5.3-Flash (+23.3% lead)
MMLU-Pro (Multi-Discipline)
78.4%
68%
GLM-5.3-Flash (+10.4% lead)
MATH-500 (Quantitative Logic)
84%
70.2%
GLM-5.3-Flash (+13.8% lead)
Inference Value Score (IVR)
76.7 / 100
67.2 / 100
GLM-5.3-Flash (+9.5 pts)
Interactive Monthly Token Economics & ROI Forecaster
Model production workloads across prompt, completion, and cached context tokens, or switch models on the fly.
Choose GLM-5.3-Flash (Zhipu AI) for sub-100ms ultra-fast inference model designed for real-time customer support, document classification, and agentic workflows — offering a 262k context window, 90ms TTFT, and $0.12/1M input pricing ($0.030/1M cached reads).
GLM-5.3-Flash is cheaper at $0.12/1M input tokens ($0.40/1M output) compared to $0.15/1M input ($0.60/1M output) for GPT-4o Mini.
Which model has lower TTFT latency and higher tok/s throughput: GLM-5.3-Flash or GPT-4o Mini?
GLM-5.3-Flash delivers faster first-token latency at 90ms TTFT (175 tok/s throughput) compared to 220ms TTFT (140 tok/s) for GPT-4o Mini.
How do GLM-5.3-Flash and GPT-4o Mini compare on SWE-bench coding and GPQA Diamond reasoning?
On SWE-bench Verified software engineering, GLM-5.3-Flash scores 52.8% versus 41% for GPT-4o Mini. On GPQA Diamond graduate-level STEM reasoning, GLM-5.3-Flash scores 63.5% versus 40.2% for GPT-4o Mini (and 84% vs 70.2% on MATH-500).
When should you choose GLM-5.3-Flash?
Choose GLM-5.3-Flash (Zhipu AI) for sub-100ms ultra-fast inference model designed for real-time customer support, document classification, and agentic workflows — offering a 262k context window, 90ms TTFT, and $0.12/1M input pricing ($0.030/1M cached reads).
When should you choose GPT-4o Mini?
Choose GPT-4o Mini (OpenAI) for high-volume classification, lightweight RAG chatbots, and structured JSON extraction — offering a 131k context window, 220ms TTFT, and $0.15/1M input pricing ($0.075/1M cached reads).
