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Head to head

GLM-5.3vsGLM 5.3 Flash

For tasks, about a month.

Verdict · measured basis

GLM 5.3 Flash costs $0.0033 per solved task against GLM-5.3 at $0.10 — ▼ 29x cheaper. Over 200 tasks that is $19 a month.

On output token price alone GLM 5.3 Flash looks 18x cheaper. The ranking holds, but the margin changes.

Verified pricing, pass rate and cost per solved task for GLM-5.3 and GLM 5.3 Flash
FigureGLM-5.3GLM 5.3 Flash
Input $/Mtok$1.4$0.075
Output $/Mtok$4.4$0.25
Cached input $/Mtok$0.26$0.015
Pass rate33%50%
Cost per solved task$0.10measured$0.0033measured
Cost per month$20$0.67

Cost per month against tasks per month · drag the marker

Monthly cost against tasks per monthLog-log lines for GLM 5.3 Flash (measured, $0.0033 per solved task), GLM-5.3 (measured, $0.10 per solved task) from 10 to 100,000 tasks a month. Marker at 200 tasks.101001k10k100k$0.1$1$10$100$1k$10kTASKS / MONTH (log) →200 tasksGLM 5.3 Flash · MEASURED · $0.0033 per solved task$0.67GLM-5.3 · MEASURED · $0.10 per solved task$20— GLM 5.3 Flash · MEASURED— GLM-5.3 · MEASURED

Solid measured · dashed modeled · dotted stale. The gap is the verdict.

Solvency Bench (solvency.dev) — first-party measurement · verified 2026-08-26 · prices from each provider's pricing page; measured rows ignore the tier · Methodology · All models at these settings