❯ Z.ai Announces GLM-5.3 API Pricing, Unchanged from GLM-5.2

FLAT PRICEZ.ai has set GLM-5.3 API pricing at $1.40 per million input tokens and $4.40 per million output tokens, exactly matching the previous-generation GLM-5.2. The new model carries no price increase — a rare move in the current round of domestic model releases.

VS KIMIThe concurrent Kimi K3 is priced at $3 per million input tokens and $15 per million output tokens. On a run of one million input plus one million output tokens, GLM-5.3 costs roughly $5.80 versus about $18 for Kimi K3 — a threefold difference. VentureBeat notes, however, that Z.ai’s official pay-as-you-go pricing table has not yet listed GLM-5.3; for now it is accessible only through the GLM coding subscription starting at $18 per month.

PRICING LEVERCompetition among domestic models has shifted from benchmark scores to per-token cost. For teams building coding agents, model calls are often the largest variable cost, and a threefold price gap is enough to directly decide which provider gets used, with subtle capability differences taking a back seat. For Z.ai, not raising the price on the new version effectively funnels all of GLM-5.3’s capability gains into user retention, using price to nail developers onto its own curve.

▪ SIGNALHolding the price flat is using pricing as a guardrail: lock developers onto your own cost curve first, then worry about the rest.