Z.ai API pricing and price changes
16 Z.ai models we price today. Since Mar 26, 2024 we recorded 34 list-price changes on OpenRouter: 17 cuts and 17 increases.
Z.ai models
| Model | Chat answer | In / out per 1M | Released |
|---|---|---|---|
 GLM 5.3 Prime | 1.6¢$15.82 / 1,000 | $2.80 / $8.80 | Sep 23, 2026 |
GLM 5.3 FlashX | 0.22¢$2.25 / 1,000 | $0.37 / $1.25 | Sep 18, 2026 |
GLM 5.3 Flash | 0.04¢$0.36 / 1,000 | $0.048 / $0.20 | Aug 26, 2026 |
GLM 5.3 | 0.86¢$8.56 / 1,000 | $0.079 / $4.80 | Aug 18, 2026 |
GLM 5.2 | 0.43¢$4.34 / 1,000 | $0.62 / $2.42 | Jun 16, 2026 |
GLM 5.1 | 0.55¢$5.46 / 1,000 | $0.97 / $3.04 | Apr 7, 2026 |
GLM 5V Turbo | 0.72¢$7.19 / 1,000 | $1.20 / $4.00 | Apr 1, 2026 |
GLM 5 Turbo | 0.72¢$7.19 / 1,000 | $1.20 / $4.00 | Mar 15, 2026 |
GLM 5 | 0.58¢$5.75 / 1,000 | $1.00 / $3.20 | Feb 11, 2026 |
GLM 4.7 Flash | 0.07¢$0.72 / 1,000 | $0.06 / $0.40 | Jan 19, 2026 |
GLM 4.7 | 0.36¢$3.55 / 1,000 | $0.54 / $1.98 | Dec 22, 2025 |
GLM 4.6V | 0.16¢$1.62 / 1,000 | $0.30 / $0.90 | Dec 8, 2025 |
GLM 4.6 | 0.36¢$3.59 / 1,000 | $0.50 / $2.00 | Sep 30, 2025 |
GLM 4.5V | 0.32¢$3.24 / 1,000 | $0.60 / $1.80 | Aug 11, 2025 |
GLM 4.5 | 0.39¢$3.95 / 1,000 | $0.60 / $2.20 | Jul 25, 2025 |
GLM 4.5 Air | 0.15¢$1.52 / 1,000 | $0.13 / $0.85 | Jul 25, 2025 |
Price change log
Changes of at least 5% in the OpenRouter list price, detected between weekly snapshots (Internet Archive copies of the public model list before October 2026, our daily pulls after). For open-weight models a change can mean a different cheapest host.
| Model | Change | Input | Output |
|---|---|---|---|
| GLM 5.3 FlashOct 16, 2026 → Oct 18, 2026 | -72% | $0.023 → $0.048 | $0.71 → $0.20 |
| GLM 5.2Oct 16, 2026 → Oct 18, 2026 | -73% | $0.037 → $0.62 | $9.00 → $2.42 |
| GLM 4.7Sep 29, 2026 → Oct 18, 2026 | -10% | $0.60 → $0.54 | $2.20 → $1.98 |
| GLM 5.3 FlashSep 29, 2026 → Oct 16, 2026 | +41% | $0.15 → $0.023 | $0.50 → $0.71 |
| GLM 5.3 Flash (batch)Sep 29, 2026 → Oct 16, 2026 | -10% | $0.06 → $0.05 | $0.20 → $0.18 |
| GLM 5.3Oct 11, 2026 → Oct 16, 2026 | +103% | $0.039 → $0.079 | $4.80 → $4.80 |
| GLM 5.2Oct 11, 2026 → Oct 16, 2026 | +29% | $0.06 → $0.037 | $7.00 → $9.00 |
| GLM 5Aug 21, 2026 → Oct 16, 2026 | +67% | $0.60 → $1.00 | $1.92 → $3.20 |
| GLM 5.3Sep 29, 2026 → Oct 11, 2026 | +9% | $1.40 → $0.039 | $4.40 → $4.80 |
| GLM 5.2Oct 5, 2026 → Oct 11, 2026 | -12% | $0.10 → $0.06 | $8.00 → $7.00 |
| GLM 5.1Sep 29, 2026 → Oct 11, 2026 | -31% | $1.40 → $0.97 | $4.40 → $3.04 |
| GLM 4.6Sep 2, 2026 → Oct 11, 2026 | +14% | $0.43 → $0.50 | $1.75 → $2.00 |
| GLM 5.2Sep 21, 2026 → Oct 5, 2026 | +292% | $0.65 → $0.10 | $2.04 → $8.00 |
| GLM 5.3 FlashSep 21, 2026 → Sep 29, 2026 | +100% | $0.075 → $0.15 | $0.25 → $0.50 |
| GLM 5.3 Flash (batch)Sep 14, 2026 → Sep 29, 2026 | -20% | $0.075 → $0.06 | $0.25 → $0.20 |
| GLM 5.3Sep 21, 2026 → Sep 29, 2026 | +54% | $0.91 → $1.40 | $2.86 → $4.40 |
| GLM 5.3 (batch)Sep 14, 2026 → Sep 29, 2026 | -9% | $0.70 → $0.45 | $2.20 → $2.00 |
| GLM 5.1Aug 21, 2026 → Sep 29, 2026 | +45% | $0.97 → $1.40 | $3.04 → $4.40 |
| GLM 4.7May 13, 2026 → Sep 29, 2026 | +26% | $0.40 → $0.60 | $1.75 → $2.20 |
| GLM 5.3 FlashSep 14, 2026 → Sep 21, 2026 | -50% | $0.15 → $0.075 | $0.50 → $0.25 |
| GLM 5.3Aug 21, 2026 → Sep 21, 2026 | -35% | $1.40 → $0.91 | $4.40 → $2.86 |
| GLM 5.3 FlashSep 2, 2026 → Sep 14, 2026 | +100% | $0.075 → $0.15 | $0.25 → $0.50 |
| GLM 5.3 Flash (batch)Sep 2, 2026 → Sep 14, 2026 | -50% | $0.15 → $0.075 | $0.50 → $0.25 |
| GLM 5.2Aug 21, 2026 → Sep 14, 2026 | -29% | $0.97 → $0.68 | $3.04 → $2.15 |
| GLM 5.2 (batch)Aug 21, 2026 → Sep 14, 2026 | -50% | $1.40 → $0.70 | $4.40 → $2.20 |
| GLM 4.6Jul 17, 2026 → Sep 2, 2026 | -12% | $0.50 → $0.43 | $2.00 → $1.75 |
| GLM 5.2Aug 14, 2026 → Aug 21, 2026 | +53% | $0.63 → $0.97 | $1.98 → $3.04 |
| GLM 5.2 (batch)Aug 14, 2026 → Aug 21, 2026 | +100% | $0.70 → $1.40 | $2.20 → $4.40 |
| GLM 5.1Aug 14, 2026 → Aug 21, 2026 | -31% | $1.40 → $0.97 | $4.40 → $3.04 |
| GLM 5Jul 20, 2026 → Aug 21, 2026 | -25% | $0.95 → $0.60 | $2.55 → $1.92 |
| GLM 5.2Aug 3, 2026 → Aug 14, 2026 | -47% | $1.19 → $0.63 | $3.74 → $1.98 |
| GLM 5.1Jul 17, 2026 → Aug 14, 2026 | +45% | $0.97 → $1.40 | $3.04 → $4.40 |
| GLM 5.2Jul 28, 2026 → Aug 3, 2026 | +62% | $0.73 → $1.19 | $2.30 → $3.74 |
| GLM 5.2Jul 20, 2026 → Jul 28, 2026 | +167% | $0.27 → $0.73 | $0.86 → $2.30 |