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Head to head

GPT-5.6 LunavsGLM 5.2

For tasks, about a month.

Verdict · measured basis

GPT-5.6 Luna costs $2.65 per solved task against GLM 5.2 at $15.49 — ▼ 5.8x cheaper. Over 200 tasks that is $2.6k a month.

On output token price alone GPT-5.6 Luna looks 3.1x cheaper. The ranking holds, but the margin changes.

Verified pricing, pass rate and cost per solved task for GPT-5.6 Luna and GLM 5.2
FigureGPT-5.6 LunaGLM 5.2
Input $/Mtok$0.2$1.19
Output $/Mtok$1.2$3.74
Cached input $/Mtok$0.02$0.221
Pass rate57%43%
Cost per solved task$2.65measured$15.49measured
Cost per month$530$3.1k

Cost per month against tasks per month · drag the marker

Monthly cost against tasks per monthLog-log lines for GPT-5.6 Luna (measured, $2.65 per solved task), GLM 5.2 (measured, $15.49 per solved task) from 10 to 100,000 tasks a month. Marker at 200 tasks.101001k10k100k$100$1k$10k$100k$1MTASKS / MONTH (log) →200 tasksGPT-5.6 Luna · MEASURED · $2.65 per solved task$530GLM 5.2 · MEASURED · $15.49 per solved task$3.1k— GPT-5.6 Luna · MEASURED— GLM 5.2 · MEASURED

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

Source: Artificial Analysis (artificialanalysis.ai) · verified 2026-08-21 · prices from each provider's pricing page; measured rows ignore the tier · Methodology · All models at these settings