GLM-5.3-Flash vs Grok 3 Mini
Live Unit Economics, TTFT Latency & Reasoning Benchmark Analysis
Which model is better: GLM-5.3-Flash or Grok 3 Mini?
Verified Performance & Unit Economics Delta
Daily synchronized metrics from synthetic latency endpoints and benchmark evaluations.
| Metric / Dimension | GLM-5.3-Flash | Grok 3 Mini | Net Delta / Advantage |
|---|---|---|---|
| Input Cost / 1M Tokens | $0.12 | $0.30 | GLM-5.3-Flash is 2.5x cheaper |
| Output Cost / 1M Tokens | $0.40 | $1.20 | GLM-5.3-Flash (66.7% lower) |
| Prompt Cache Read / 1M | $0.030 | $0.080 | GLM-5.3-Flash is 2.7x cheaper |
| Prompt Cache Write / 1M | $0.12 | $0.30 | GLM-5.3-Flash is 2.5x cheaper |
| Avg TTFT Response Latency | 90ms | 150ms | GLM-5.3-Flash (+60ms faster) |
| SWE-bench Verified (Coding) | 52.8% | 54% | Grok 3 Mini (+1.2% lead) |
| Inference Value Score (IVR) | 77.8 / 100 | 69.6 / 100 | GLM-5.3-Flash (+8.2 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
$0.12/1M in · $0.40/1M out
Prompt Cache: $0.030/1M read · $0.12/1M write
$0.30/1M in · $1.20/1M out
Prompt Cache: $0.080/1M read · $0.30/1M write
When to Choose GLM-5.3-Flash
Choose GLM-5.3-Flash when you need Sub-100ms ultra-fast inference model designed for real-time customer support, document classification, and agentic workflows. and have an infrastructure budget aligned with $0.12/1M tokens.
When to Choose Grok 3 Mini
Choose Grok 3 Mini when you need High-speed reasoning model providing rapid answers and code generation with chain-of-thought capabilities at edge pricing. and prioritize xAI ecosystem integration at $0.30/1M tokens.
Related Questions & Decision Factors
Which is cheaper: GLM-5.3-Flash or Grok 3 Mini?
GLM-5.3-Flash is cheaper at $0.12/1M input tokens compared to $0.30/1M for Grok 3 Mini.
Which model has lower latency: GLM-5.3-Flash or Grok 3 Mini?
GLM-5.3-Flash delivers faster response times with an average TTFT of 90ms vs 150ms for Grok 3 Mini.
When should you choose GLM-5.3-Flash?
Choose GLM-5.3-Flash when you need Sub-100ms ultra-fast inference model designed for real-time customer support, document classification, and agentic workflows. and have an infrastructure budget aligned with $0.12/1M tokens.
When should you choose Grok 3 Mini?
Choose Grok 3 Mini when you need High-speed reasoning model providing rapid answers and code generation with chain-of-thought capabilities at edge pricing. and prioritize xAI ecosystem integration at $0.30/1M tokens.