GLM-5.3 vs Grok 3
Live Unit Economics, TTFT Latency & Reasoning Benchmark Analysis
Which model is better: GLM-5.3 or Grok 3?
Verified Performance & Unit Economics Delta
Daily synchronized metrics from synthetic latency endpoints and benchmark evaluations.
| Metric / Dimension | GLM-5.3 | Grok 3 | Net Delta / Advantage |
|---|---|---|---|
| Input Cost / 1M Tokens | $0.35 | $3.00 | GLM-5.3 is 8.6x cheaper |
| Output Cost / 1M Tokens | $1.00 | $15.00 | GLM-5.3 (93.3% lower) |
| Prompt Cache Read / 1M | $0.090 | $0.750 | GLM-5.3 is 8.3x cheaper |
| Prompt Cache Write / 1M | $0.35 | $3.00 | GLM-5.3 is 8.6x cheaper |
| Avg TTFT Response Latency | 160ms | 620ms | GLM-5.3 (+460ms faster) |
| SWE-bench Verified (Coding) | 56% | 65.8% | Grok 3 (+9.8% lead) |
| Inference Value Score (IVR) | 70.5 / 100 | 51 / 100 | GLM-5.3 (+19.5 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
$3.00/1M in · $15.00/1M out
Prompt Cache: $0.750/1M read · $3.00/1M 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 Grok 3
Choose Grok 3 when you need Heavyweight scientific discovery, complex multi-file codebase reasoning, and real-time deep search exploration. and prioritize xAI ecosystem integration at $3.00/1M tokens.
Related Questions & Decision Factors
Which is cheaper: GLM-5.3 or Grok 3?
GLM-5.3 is cheaper at $0.35/1M input tokens compared to $3.00/1M for Grok 3.
Which model has lower latency: GLM-5.3 or Grok 3?
GLM-5.3 delivers faster response times with an average TTFT of 160ms vs 620ms for Grok 3.
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 Grok 3?
Choose Grok 3 when you need Heavyweight scientific discovery, complex multi-file codebase reasoning, and real-time deep search exploration. and prioritize xAI ecosystem integration at $3.00/1M tokens.