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Z.ai: GLM 5.3 FlashX

Z.ai

Z.ai: GLM 5.3 FlashX by Z.ai costs $0.37 per 1M input tokens and $1.25 per 1M output tokens, with a 1M-token context window.

Pricing

Input (per 1M tokens)
$0.37
Output (per 1M tokens)
$1.25
Cached input (per 1M)
$0.09

Specifications

Provider
Z.ai
Context window
1M tokens
Parameters
—
Released
—
Open weights
—
Frontier model
No

Speed & latency

Time to first token
4.38s
Output speed
160 tok/s

Fastest host: zai (via vercel-ai-gateway).

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FAQ

How much does Z.ai: GLM 5.3 FlashX cost?

Z.ai: GLM 5.3 FlashX is priced at $0.37 per 1M input tokens and $1.25 per 1M output tokens. Output tokens cost more than input.

What is Z.ai: GLM 5.3 FlashX's context window?

Z.ai: GLM 5.3 FlashX supports a context window of 1M tokens — the maximum prompt plus response length it can handle in a single request.

Is Z.ai: GLM 5.3 FlashX open weight?

Open-weight status for Z.ai: GLM 5.3 FlashX is not recorded in our dataset.

Data as of 2026-10-14. Source: Pricing via OpenRouter API, openrouter.ai. Pricing is per 1M tokens (USD); confirm with the provider before production use.