Flash — fastest and cheapest, lighter reasoningOpen Weights

GLM 5.3 Flash (batch) Pricing

Z.ai · z-ai-glm-5-3-flash-batch

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Input / 1M tokens

$0.075

Output / 1M tokens

$0.250

Context window

1,048,576 tokens

≈ 1,398 pages of text

Max output

943,718 tokens

What it costs in practice

Typical request (1,200 in + 400 out tokens)$0.0002

1,000 requests / month$0.19/mo 10,000 requests / month$1.90/mo 100,000 requests / month$19.00/mo

Estimate your own workloadOpens the calculator with GLM 5.3 Flash (batch) preloaded — adjust volume and token counts there.

Price history

List price per 1M tokens since we started tracking in Aug 2026. Each step marks a price change — hover a point for the exact date and rate.

What it excels at

Supports 1M-token context for long-document and batch workloads at very low cost; open weights allow self-hosted deployment for high-volume text and vision tasks.

The business tradeoff

Flash positioning implies weaker complex reasoning than flagship models; self-hosting introduces variable latency, throughput, and operational overhead.

Same tier from other providers

GPT-5.4 NanoOpenAI$0.0007/ typical request Claude Haiku 4.5Anthropic$0.0032/ typical request Gemini 3.5 FlashGoogle$0.0054/ typical request

Head-to-head

GLM 5.3 Flash (batch) vs GPT-5.4 Nano →GLM 5.3 Flash (batch) vs Claude Haiku 4.5 →GLM 5.3 Flash (batch) vs Gemini 3.5 Flash →

Vendor list rates, as of Sep 8, 2026 · source: openrouter · per-request examples assume 1,200 input + 400 output tokens.