Home / Price changes / GLM 5.1
GLM 5.1 price increase: output $3.04 → $4.40 per 1M tokens
Z.ai's GLM 5.1 changed its list price between Aug 21, 2026 and Sep 29, 2026: input $0.97 → $1.40 and output $3.04 → $4.40 per 1M tokens (+45%).
What it means per task
Same tokens as today's measurement, old price vs new price.
| Task | Before | After | Per 1,000 tasks |
|---|---|---|---|
| Answer a chat question | 0.55¢ | 0.79¢ | $5.46 → $7.91 |
| Reply to a customer email | 0.10¢ | 0.15¢ | $1.04 → $1.51 |
| Write a 1,500-word blog post | 2.1¢ | 3.1¢ | $21.08 → $30.55 |
| Write 10 product descriptions | 2.2¢ | 3.1¢ | $21.66 → $31.39 |
| Translate 1,000 words | 3.2¢ | 4.7¢ | $32.12 → $46.54 |
| Proofread one page (500 words) | 0.31¢ | 0.45¢ | $3.12 → $4.53 |
| Summarize a 20-page PDF | 1.8¢ | 2.6¢ | $18.06 → $26.17 |
| Extract data from an invoice | 0.35¢ | 0.51¢ | $3.51 → $5.08 |
| Analyze a 200-row spreadsheet | 5.3¢ | 7.7¢ | $53.31 → $77.26 |
| Answer from 5 retrieved documents (RAG) | 0.96¢ | 1.4¢ | $9.57 → $13.87 |
| Classify 100 support tickets | 2.5¢ | 3.6¢ | $25.08 → $36.34 |
| Review 500 lines of code | 5.3¢ | 7.7¢ | $52.95 → $76.74 |
| Write a SQL query | 0.50¢ | 0.72¢ | $4.97 → $7.20 |
| Run a 50-step coding agent | $2.30 | $3.33 | $2,297 → $3,328 |