GLM-5.3 Flash API pricing & setup
As of 2026-10-17, the cheapest GLM-5.3 Flash channel is Official (China): ¥0.8 input / ¥2.8 output per 1M tokens (blended $0.194). Context 1M.
→ GLM hub: all prices, free access, setup
Context: 1M · Max output: 944K · Modalities: text, image, video · Listed: 2026-08-26
Channel comparison (per 1M tokens)
| Channel | Blended | Input | Output | Cached | Access & payment (this channel) | Notes | Source |
|---|---|---|---|---|---|---|---|
| Official (China) ¥0.8 / ¥2.8 | $0.194 | $0.119 | $0.418 | $0.034 | ✓CN direct✓Alipay✓ID✗Intl card conditions source2026-10-17 | 标准价。官方页注明限时五折：输入 ¥0.4 / 缓存命中 ¥0.115 / 输出 ¥1.4，未写截止日期 models.dev differs | open.bigmodel.cn 2026-10-17 |
| OpenRouter $0.15 / $0.5 | $0.237 | $0.15 | $0.5 | $0.03 | ✓CN direct✓Alipay✗ID✗Intl card conditions source2026-10-17 | Original vendor endpoint: Z.AI Quantized min $0.075 / $0.25 (fp4, DeepInfra) | openrouter.ai 2026-10-17 |
Access & payment conditions are verified per channel (see the column above); unverified never counts as met.
Free & deals
- OpenCode (official account): GLM 5.3 Flash is now free in OpenCode · official
How to use GLM-5.3 Flash in Claude Code / Codex / OpenCode
Official helper: npx @z_ai/coding-helper
Check the provider docs for exact model IDs. Source
Cheaper alternatives
Qwen3.8 Flash ($0.19) · Gemini 2.5 Flash-Lite ($0.175) · MiMo V2.6 Flash ($0.175) ·
Compare
GLM-5.3 Flash vs Qwen3.8 Flash · Kimi K3 vs GLM-5.3 · GLM-5.3 vs Qwen3.8 Max (0902) · Compare any two →
Rankings: Cheapest LLM APIs · LLM APIs usable from mainland China · All Zhipu GLM (Z.ai) models
Price history
- 2026-10-17 · OpenRouter · GLM-5.3 Flash cached: $0.018 → $0.03 (The host behind the OpenRouter list price changed (third-party Morph → original vendor Z.AI); not a provider price change; now priced on the original-vendor endpoint basis)
- 2026-10-17 · OpenRouter · GLM-5.3 Flash output: $0.65 → $0.5 (The host behind the OpenRouter list price changed (third-party Morph → original vendor Z.AI); not a provider price change; now priced on the original-vendor endpoint basis)
- 2026-10-17 · OpenRouter · GLM-5.3 Flash input: $0.049 → $0.15 (The host behind the OpenRouter list price changed (third-party Morph → original vendor Z.AI); not a provider price change; now priced on the original-vendor endpoint basis)
- 2026-10-17 · OpenRouter · GLM-5.3 Flash cached: $0.0096 → $0.018 (Aligned with the raw OpenRouter API value (old record did not match the API at 2026-10-17 03:44 UTC))
- 2026-10-17 · OpenRouter · GLM-5.3 Flash output: $0.2 → $0.65 (Aligned with the raw OpenRouter API value (old record did not match the API at 2026-10-17 03:44 UTC))
- 2026-10-17 · OpenRouter · GLM-5.3 Flash input: $0.0156 → $0.049 (Aligned with the raw OpenRouter API value (old record did not match the API at 2026-10-17 03:44 UTC))
- 2026-10-17 · Official (China) · GLM-5.3 Flash listed · ¥0.8 / ¥2.8
FAQ
How much does the GLM-5.3 Flash API cost?
Cheapest channel (Official (China)): ¥0.8 input / ¥2.8 output per 1M tokens, verified 2026-10-17.
Can I use GLM-5.3 Flash from China?
Official (China): direct yes, Alipay yes, ID required yes, overseas card no; OpenRouter: direct yes, Alipay yes, ID required no, overseas card no
Is GLM-5.3 Flash free?
OpenCode (official account): GLM 5.3 Flash is now free in OpenCode
What is GLM-5.3 Flash's context window?
1M tokens